diff --git a/proto/lightning.proto b/proto/lightning.proto new file mode 100644 index 0000000..2ad22e0 --- /dev/null +++ b/proto/lightning.proto @@ -0,0 +1,5046 @@ +syntax = "proto3"; + +package lnrpc; + +option go_package = "github.com/lightningnetwork/lnd/lnrpc"; + +/* + * Comments in this file will be directly parsed into the API + * Documentation as descriptions of the associated method, message, or field. + * These descriptions should go right above the definition of the object, and + * can be in either block or // comment format. + * + * An RPC method can be matched to an lncli command by placing a line in the + * beginning of the description in exactly the following format: + * lncli: `methodname` + * + * Failure to specify the exact name of the command will cause documentation + * generation to fail. + * + * More information on how exactly the gRPC documentation is generated from + * this proto file can be found here: + * https://github.com/lightninglabs/lightning-api + */ + +// Lightning is the main RPC server of the daemon. +service Lightning { + /* lncli: `walletbalance` + WalletBalance returns total unspent outputs(confirmed and unconfirmed), all + confirmed unspent outputs and all unconfirmed unspent outputs under control + of the wallet. + */ + rpc WalletBalance (WalletBalanceRequest) returns (WalletBalanceResponse); + + /* lncli: `channelbalance` + ChannelBalance returns a report on the total funds across all open channels, + categorized in local/remote, pending local/remote and unsettled local/remote + balances. + */ + rpc ChannelBalance (ChannelBalanceRequest) returns (ChannelBalanceResponse); + + /* lncli: `listchaintxns` + GetTransactions returns a list describing all the known transactions + relevant to the wallet. + */ + rpc GetTransactions (GetTransactionsRequest) returns (TransactionDetails); + + /* lncli: `estimatefee` + EstimateFee asks the chain backend to estimate the fee rate and total fees + for a transaction that pays to multiple specified outputs. + + When using REST, the `AddrToAmount` map type can be set by appending + `&AddrToAmount[
]=` to the URL. Unfortunately this + map type doesn't appear in the REST API documentation because of a bug in + the grpc-gateway library. + */ + rpc EstimateFee (EstimateFeeRequest) returns (EstimateFeeResponse); + + /* lncli: `sendcoins` + SendCoins executes a request to send coins to a particular address. Unlike + SendMany, this RPC call only allows creating a single output at a time. If + neither target_conf, or sat_per_vbyte are set, then the internal wallet will + consult its fee model to determine a fee for the default confirmation + target. + */ + rpc SendCoins (SendCoinsRequest) returns (SendCoinsResponse); + + /* lncli: `listunspent` + Deprecated, use walletrpc.ListUnspent instead. + + ListUnspent returns a list of all utxos spendable by the wallet with a + number of confirmations between the specified minimum and maximum. + */ + rpc ListUnspent (ListUnspentRequest) returns (ListUnspentResponse); + + /* + SubscribeTransactions creates a uni-directional stream from the server to + the client in which any newly discovered transactions relevant to the + wallet are sent over. + */ + rpc SubscribeTransactions (GetTransactionsRequest) + returns (stream Transaction); + + /* lncli: `sendmany` + SendMany handles a request for a transaction that creates multiple specified + outputs in parallel. If neither target_conf, or sat_per_vbyte are set, then + the internal wallet will consult its fee model to determine a fee for the + default confirmation target. + */ + rpc SendMany (SendManyRequest) returns (SendManyResponse); + + /* lncli: `newaddress` + NewAddress creates a new address under control of the local wallet. + */ + rpc NewAddress (NewAddressRequest) returns (NewAddressResponse); + + /* lncli: `signmessage` + SignMessage signs a message with this node's private key. The returned + signature string is `zbase32` encoded and pubkey recoverable, meaning that + only the message digest and signature are needed for verification. + */ + rpc SignMessage (SignMessageRequest) returns (SignMessageResponse); + + /* lncli: `verifymessage` + VerifyMessage verifies a signature over a message and recovers the signer's + public key. The signature is only deemed valid if the recovered public key + corresponds to a node key in the public Lightning network. The signature + must be zbase32 encoded and signed by an active node in the resident node's + channel database. In addition to returning the validity of the signature, + VerifyMessage also returns the recovered pubkey from the signature. + */ + rpc VerifyMessage (VerifyMessageRequest) returns (VerifyMessageResponse); + + /* lncli: `connect` + ConnectPeer attempts to establish a connection to a remote peer. This is at + the networking level, and is used for communication between nodes. This is + distinct from establishing a channel with a peer. + */ + rpc ConnectPeer (ConnectPeerRequest) returns (ConnectPeerResponse); + + /* lncli: `disconnect` + DisconnectPeer attempts to disconnect one peer from another identified by a + given pubKey. In the case that we currently have a pending or active channel + with the target peer, then this action will be not be allowed. + */ + rpc DisconnectPeer (DisconnectPeerRequest) returns (DisconnectPeerResponse); + + /* lncli: `listpeers` + ListPeers returns a verbose listing of all currently active peers. + */ + rpc ListPeers (ListPeersRequest) returns (ListPeersResponse); + + /* + SubscribePeerEvents creates a uni-directional stream from the server to + the client in which any events relevant to the state of peers are sent + over. Events include peers going online and offline. + */ + rpc SubscribePeerEvents (PeerEventSubscription) returns (stream PeerEvent); + + /* lncli: `getinfo` + GetInfo returns general information concerning the lightning node including + it's identity pubkey, alias, the chains it is connected to, and information + concerning the number of open+pending channels. + */ + rpc GetInfo (GetInfoRequest) returns (GetInfoResponse); + + /* lncli: 'getdebuginfo' + GetDebugInfo returns debug information concerning the state of the daemon + and its subsystems. This includes the full configuration and the latest log + entries from the log file. + */ + rpc GetDebugInfo (GetDebugInfoRequest) returns (GetDebugInfoResponse); + + /** lncli: `getrecoveryinfo` + GetRecoveryInfo returns information concerning the recovery mode including + whether it's in a recovery mode, whether the recovery is finished, and the + progress made so far. + */ + rpc GetRecoveryInfo (GetRecoveryInfoRequest) + returns (GetRecoveryInfoResponse); + + // TODO(roasbeef): merge with below with bool? + /* lncli: `pendingchannels` + PendingChannels returns a list of all the channels that are currently + considered "pending". A channel is pending if it has finished the funding + workflow and is waiting for confirmations for the funding txn, or is in the + process of closure, either initiated cooperatively or non-cooperatively. + */ + rpc PendingChannels (PendingChannelsRequest) + returns (PendingChannelsResponse); + + /* lncli: `listchannels` + ListChannels returns a description of all the open channels that this node + is a participant in. + */ + rpc ListChannels (ListChannelsRequest) returns (ListChannelsResponse); + + /* + SubscribeChannelEvents creates a uni-directional stream from the server to + the client in which any updates relevant to the state of the channels are + sent over. Events include new active channels, inactive channels, and closed + channels. + */ + rpc SubscribeChannelEvents (ChannelEventSubscription) + returns (stream ChannelEventUpdate); + + /* lncli: `closedchannels` + ClosedChannels returns a description of all the closed channels that + this node was a participant in. + */ + rpc ClosedChannels (ClosedChannelsRequest) returns (ClosedChannelsResponse); + + /* + OpenChannelSync is a synchronous version of the OpenChannel RPC call. This + call is meant to be consumed by clients to the REST proxy. As with all + other sync calls, all byte slices are intended to be populated as hex + encoded strings. + */ + rpc OpenChannelSync (OpenChannelRequest) returns (ChannelPoint); + + /* lncli: `openchannel` + OpenChannel attempts to open a singly funded channel specified in the + request to a remote peer. Users are able to specify a target number of + blocks that the funding transaction should be confirmed in, or a manual fee + rate to us for the funding transaction. If neither are specified, then a + lax block confirmation target is used. Each OpenStatusUpdate will return + the pending channel ID of the in-progress channel. Depending on the + arguments specified in the OpenChannelRequest, this pending channel ID can + then be used to manually progress the channel funding flow. + */ + rpc OpenChannel (OpenChannelRequest) returns (stream OpenStatusUpdate); + + /* lncli: `batchopenchannel` + BatchOpenChannel attempts to open multiple single-funded channels in a + single transaction in an atomic way. This means either all channel open + requests succeed at once or all attempts are aborted if any of them fail. + This is the safer variant of using PSBTs to manually fund a batch of + channels through the OpenChannel RPC. + */ + rpc BatchOpenChannel (BatchOpenChannelRequest) + returns (BatchOpenChannelResponse); + + /* + FundingStateStep is an advanced funding related call that allows the caller + to either execute some preparatory steps for a funding workflow, or + manually progress a funding workflow. The primary way a funding flow is + identified is via its pending channel ID. As an example, this method can be + used to specify that we're expecting a funding flow for a particular + pending channel ID, for which we need to use specific parameters. + Alternatively, this can be used to interactively drive PSBT signing for + funding for partially complete funding transactions. + */ + rpc FundingStateStep (FundingTransitionMsg) returns (FundingStateStepResp); + + /* + ChannelAcceptor dispatches a bi-directional streaming RPC in which + OpenChannel requests are sent to the client and the client responds with + a boolean that tells LND whether or not to accept the channel. This allows + node operators to specify their own criteria for accepting inbound channels + through a single persistent connection. + */ + rpc ChannelAcceptor (stream ChannelAcceptResponse) + returns (stream ChannelAcceptRequest); + + /* lncli: `closechannel` + CloseChannel attempts to close an active channel identified by its channel + outpoint (ChannelPoint). The actions of this method can additionally be + augmented to attempt a force close after a timeout period in the case of an + inactive peer. If a non-force close (cooperative closure) is requested, + then the user can specify either a target number of blocks until the + closure transaction is confirmed, or a manual fee rate. If neither are + specified, then a default lax, block confirmation target is used. + */ + rpc CloseChannel (CloseChannelRequest) returns (stream CloseStatusUpdate); + + /* lncli: `abandonchannel` + AbandonChannel removes all channel state from the database except for a + close summary. This method can be used to get rid of permanently unusable + channels due to bugs fixed in newer versions of lnd. This method can also be + used to remove externally funded channels where the funding transaction was + never broadcast. Only available for non-externally funded channels in dev + build. + */ + rpc AbandonChannel (AbandonChannelRequest) returns (AbandonChannelResponse); + + /* lncli: `sendpayment` + Deprecated, use routerrpc.SendPaymentV2. SendPayment dispatches a + bi-directional streaming RPC for sending payments through the Lightning + Network. A single RPC invocation creates a persistent bi-directional + stream allowing clients to rapidly send payments through the Lightning + Network with a single persistent connection. + */ + rpc SendPayment (stream SendRequest) returns (stream SendResponse) { + option deprecated = true; + } + + /* + SendPaymentSync is the synchronous non-streaming version of SendPayment. + This RPC is intended to be consumed by clients of the REST proxy. + Additionally, this RPC expects the destination's public key and the payment + hash (if any) to be encoded as hex strings. + */ + rpc SendPaymentSync (SendRequest) returns (SendResponse); + + /* lncli: `sendtoroute` + Deprecated, use routerrpc.SendToRouteV2. SendToRoute is a bi-directional + streaming RPC for sending payment through the Lightning Network. This + method differs from SendPayment in that it allows users to specify a full + route manually. This can be used for things like rebalancing, and atomic + swaps. + */ + rpc SendToRoute (stream SendToRouteRequest) returns (stream SendResponse) { + option deprecated = true; + } + + /* + SendToRouteSync is a synchronous version of SendToRoute. It Will block + until the payment either fails or succeeds. + */ + rpc SendToRouteSync (SendToRouteRequest) returns (SendResponse); + + /* lncli: `addinvoice` + AddInvoice attempts to add a new invoice to the invoice database. Any + duplicated invoices are rejected, therefore all invoices *must* have a + unique payment preimage. + */ + rpc AddInvoice (Invoice) returns (AddInvoiceResponse); + + /* lncli: `listinvoices` + ListInvoices returns a list of all the invoices currently stored within the + database. Any active debug invoices are ignored. It has full support for + paginated responses, allowing users to query for specific invoices through + their add_index. This can be done by using either the first_index_offset or + last_index_offset fields included in the response as the index_offset of the + next request. By default, the first 100 invoices created will be returned. + Backwards pagination is also supported through the Reversed flag. + */ + rpc ListInvoices (ListInvoiceRequest) returns (ListInvoiceResponse); + + /* lncli: `lookupinvoice` + LookupInvoice attempts to look up an invoice according to its payment hash. + The passed payment hash *must* be exactly 32 bytes, if not, an error is + returned. + */ + rpc LookupInvoice (PaymentHash) returns (Invoice); + + /* + SubscribeInvoices returns a uni-directional stream (server -> client) for + notifying the client of newly added/settled invoices. The caller can + optionally specify the add_index and/or the settle_index. If the add_index + is specified, then we'll first start by sending add invoice events for all + invoices with an add_index greater than the specified value. If the + settle_index is specified, then next, we'll send out all settle events for + invoices with a settle_index greater than the specified value. One or both + of these fields can be set. If no fields are set, then we'll only send out + the latest add/settle events. + */ + rpc SubscribeInvoices (InvoiceSubscription) returns (stream Invoice); + + /* lncli: `decodepayreq` + DecodePayReq takes an encoded payment request string and attempts to decode + it, returning a full description of the conditions encoded within the + payment request. + */ + rpc DecodePayReq (PayReqString) returns (PayReq); + + /* lncli: `listpayments` + ListPayments returns a list of all outgoing payments. + */ + rpc ListPayments (ListPaymentsRequest) returns (ListPaymentsResponse); + + /* lncli: `deletepayments` + DeletePayment deletes an outgoing payment from DB. Note that it will not + attempt to delete an In-Flight payment, since that would be unsafe. + */ + rpc DeletePayment (DeletePaymentRequest) returns (DeletePaymentResponse); + + /* lncli: `deletepayments --all` + DeleteAllPayments deletes all outgoing payments from DB. Note that it will + not attempt to delete In-Flight payments, since that would be unsafe. + */ + rpc DeleteAllPayments (DeleteAllPaymentsRequest) + returns (DeleteAllPaymentsResponse); + + /* lncli: `describegraph` + DescribeGraph returns a description of the latest graph state from the + point of view of the node. The graph information is partitioned into two + components: all the nodes/vertexes, and all the edges that connect the + vertexes themselves. As this is a directed graph, the edges also contain + the node directional specific routing policy which includes: the time lock + delta, fee information, etc. + */ + rpc DescribeGraph (ChannelGraphRequest) returns (ChannelGraph); + + /* lncli: `getnodemetrics` + GetNodeMetrics returns node metrics calculated from the graph. Currently + the only supported metric is betweenness centrality of individual nodes. + */ + rpc GetNodeMetrics (NodeMetricsRequest) returns (NodeMetricsResponse); + + /* lncli: `getchaninfo` + GetChanInfo returns the latest authenticated network announcement for the + given channel identified by its channel ID: an 8-byte integer which + uniquely identifies the location of transaction's funding output within the + blockchain. + */ + rpc GetChanInfo (ChanInfoRequest) returns (ChannelEdge); + + /* lncli: `getnodeinfo` + GetNodeInfo returns the latest advertised, aggregated, and authenticated + channel information for the specified node identified by its public key. + */ + rpc GetNodeInfo (NodeInfoRequest) returns (NodeInfo); + + /* lncli: `queryroutes` + QueryRoutes attempts to query the daemon's Channel Router for a possible + route to a target destination capable of carrying a specific amount of + satoshis. The returned route contains the full details required to craft and + send an HTLC, also including the necessary information that should be + present within the Sphinx packet encapsulated within the HTLC. + + When using REST, the `dest_custom_records` map type can be set by appending + `&dest_custom_records[]=` + to the URL. Unfortunately this map type doesn't appear in the REST API + documentation because of a bug in the grpc-gateway library. + */ + rpc QueryRoutes (QueryRoutesRequest) returns (QueryRoutesResponse); + + /* lncli: `getnetworkinfo` + GetNetworkInfo returns some basic stats about the known channel graph from + the point of view of the node. + */ + rpc GetNetworkInfo (NetworkInfoRequest) returns (NetworkInfo); + + /* lncli: `stop` + StopDaemon will send a shutdown request to the interrupt handler, triggering + a graceful shutdown of the daemon. + */ + rpc StopDaemon (StopRequest) returns (StopResponse); + + /* + SubscribeChannelGraph launches a streaming RPC that allows the caller to + receive notifications upon any changes to the channel graph topology from + the point of view of the responding node. Events notified include: new + nodes coming online, nodes updating their authenticated attributes, new + channels being advertised, updates in the routing policy for a directional + channel edge, and when channels are closed on-chain. + */ + rpc SubscribeChannelGraph (GraphTopologySubscription) + returns (stream GraphTopologyUpdate); + + /* lncli: `debuglevel` + DebugLevel allows a caller to programmatically set the logging verbosity of + lnd. The logging can be targeted according to a coarse daemon-wide logging + level, or in a granular fashion to specify the logging for a target + sub-system. + */ + rpc DebugLevel (DebugLevelRequest) returns (DebugLevelResponse); + + /* lncli: `feereport` + FeeReport allows the caller to obtain a report detailing the current fee + schedule enforced by the node globally for each channel. + */ + rpc FeeReport (FeeReportRequest) returns (FeeReportResponse); + + /* lncli: `updatechanpolicy` + UpdateChannelPolicy allows the caller to update the fee schedule and + channel policies for all channels globally, or a particular channel. + */ + rpc UpdateChannelPolicy (PolicyUpdateRequest) + returns (PolicyUpdateResponse); + + /* lncli: `fwdinghistory` + ForwardingHistory allows the caller to query the htlcswitch for a record of + all HTLCs forwarded within the target time range, and integer offset + within that time range, for a maximum number of events. If no maximum number + of events is specified, up to 100 events will be returned. If no time-range + is specified, then events will be returned in the order that they occured. + + A list of forwarding events are returned. The size of each forwarding event + is 40 bytes, and the max message size able to be returned in gRPC is 4 MiB. + As a result each message can only contain 50k entries. Each response has + the index offset of the last entry. The index offset can be provided to the + request to allow the caller to skip a series of records. + */ + rpc ForwardingHistory (ForwardingHistoryRequest) + returns (ForwardingHistoryResponse); + + /* lncli: `exportchanbackup` + ExportChannelBackup attempts to return an encrypted static channel backup + for the target channel identified by it channel point. The backup is + encrypted with a key generated from the aezeed seed of the user. The + returned backup can either be restored using the RestoreChannelBackup + method once lnd is running, or via the InitWallet and UnlockWallet methods + from the WalletUnlocker service. + */ + rpc ExportChannelBackup (ExportChannelBackupRequest) + returns (ChannelBackup); + + /* + ExportAllChannelBackups returns static channel backups for all existing + channels known to lnd. A set of regular singular static channel backups for + each channel are returned. Additionally, a multi-channel backup is returned + as well, which contains a single encrypted blob containing the backups of + each channel. + */ + rpc ExportAllChannelBackups (ChanBackupExportRequest) + returns (ChanBackupSnapshot); + + /* lncli: `verifychanbackup` + VerifyChanBackup allows a caller to verify the integrity of a channel backup + snapshot. This method will accept either a packed Single or a packed Multi. + Specifying both will result in an error. + */ + rpc VerifyChanBackup (ChanBackupSnapshot) + returns (VerifyChanBackupResponse); + + /* lncli: `restorechanbackup` + RestoreChannelBackups accepts a set of singular channel backups, or a + single encrypted multi-chan backup and attempts to recover any funds + remaining within the channel. If we are able to unpack the backup, then the + new channel will be shown under listchannels, as well as pending channels. + */ + rpc RestoreChannelBackups (RestoreChanBackupRequest) + returns (RestoreBackupResponse); + + /* + SubscribeChannelBackups allows a client to sub-subscribe to the most up to + date information concerning the state of all channel backups. Each time a + new channel is added, we return the new set of channels, along with a + multi-chan backup containing the backup info for all channels. Each time a + channel is closed, we send a new update, which contains new new chan back + ups, but the updated set of encrypted multi-chan backups with the closed + channel(s) removed. + */ + rpc SubscribeChannelBackups (ChannelBackupSubscription) + returns (stream ChanBackupSnapshot); + + /* lncli: `bakemacaroon` + BakeMacaroon allows the creation of a new macaroon with custom read and + write permissions. No first-party caveats are added since this can be done + offline. + */ + rpc BakeMacaroon (BakeMacaroonRequest) returns (BakeMacaroonResponse); + + /* lncli: `listmacaroonids` + ListMacaroonIDs returns all root key IDs that are in use. + */ + rpc ListMacaroonIDs (ListMacaroonIDsRequest) + returns (ListMacaroonIDsResponse); + + /* lncli: `deletemacaroonid` + DeleteMacaroonID deletes the specified macaroon ID and invalidates all + macaroons derived from that ID. + */ + rpc DeleteMacaroonID (DeleteMacaroonIDRequest) + returns (DeleteMacaroonIDResponse); + + /* lncli: `listpermissions` + ListPermissions lists all RPC method URIs and their required macaroon + permissions to access them. + */ + rpc ListPermissions (ListPermissionsRequest) + returns (ListPermissionsResponse); + + /* + CheckMacaroonPermissions checks whether a request follows the constraints + imposed on the macaroon and that the macaroon is authorized to follow the + provided permissions. + */ + rpc CheckMacaroonPermissions (CheckMacPermRequest) + returns (CheckMacPermResponse); + + /* + RegisterRPCMiddleware adds a new gRPC middleware to the interceptor chain. A + gRPC middleware is software component external to lnd that aims to add + additional business logic to lnd by observing/intercepting/validating + incoming gRPC client requests and (if needed) replacing/overwriting outgoing + messages before they're sent to the client. When registering the middleware + must identify itself and indicate what custom macaroon caveats it wants to + be responsible for. Only requests that contain a macaroon with that specific + custom caveat are then sent to the middleware for inspection. The other + option is to register for the read-only mode in which all requests/responses + are forwarded for interception to the middleware but the middleware is not + allowed to modify any responses. As a security measure, _no_ middleware can + modify responses for requests made with _unencumbered_ macaroons! + */ + rpc RegisterRPCMiddleware (stream RPCMiddlewareResponse) + returns (stream RPCMiddlewareRequest); + + /* lncli: `sendcustom` + SendCustomMessage sends a custom peer message. + */ + rpc SendCustomMessage (SendCustomMessageRequest) + returns (SendCustomMessageResponse); + + /* lncli: `subscribecustom` + SubscribeCustomMessages subscribes to a stream of incoming custom peer + messages. + + To include messages with type outside of the custom range (>= 32768) lnd + needs to be compiled with the `dev` build tag, and the message type to + override should be specified in lnd's experimental protocol configuration. + */ + rpc SubscribeCustomMessages (SubscribeCustomMessagesRequest) + returns (stream CustomMessage); + + /* lncli: `listaliases` + ListAliases returns the set of all aliases that have ever existed with + their confirmed SCID (if it exists) and/or the base SCID (in the case of + zero conf). + */ + rpc ListAliases (ListAliasesRequest) returns (ListAliasesResponse); + + /* + LookupHtlcResolution retrieves a final htlc resolution from the database. + If the htlc has no final resolution yet, a NotFound grpc status code is + returned. + */ + rpc LookupHtlcResolution (LookupHtlcResolutionRequest) + returns (LookupHtlcResolutionResponse); +} + +message LookupHtlcResolutionRequest { + uint64 chan_id = 1; + + uint64 htlc_index = 2; +} + +message LookupHtlcResolutionResponse { + // Settled is true is the htlc was settled. If false, the htlc was failed. + bool settled = 1; + + // Offchain indicates whether the htlc was resolved off-chain or on-chain. + bool offchain = 2; +} + +message SubscribeCustomMessagesRequest { +} + +message CustomMessage { + // Peer from which the message originates + bytes peer = 1; + + // Message type. This value will be in the custom range (>= 32768). + uint32 type = 2; + + // Raw message data + bytes data = 3; +} + +message SendCustomMessageRequest { + // Peer to send the message to + bytes peer = 1; + + // Message type. This value needs to be in the custom range (>= 32768). + // To send a type < custom range, lnd needs to be compiled with the `dev` + // build tag, and the message type to override should be specified in lnd's + // experimental protocol configuration. + uint32 type = 2; + + // Raw message data. + bytes data = 3; +} + +message SendCustomMessageResponse { +} + +message Utxo { + // The type of address + AddressType address_type = 1; + + // The address + string address = 2; + + // The value of the unspent coin in satoshis + int64 amount_sat = 3; + + // The pkscript in hex + string pk_script = 4; + + // The outpoint in format txid:n + OutPoint outpoint = 5; + + // The number of confirmations for the Utxo + int64 confirmations = 6; +} + +enum OutputScriptType { + SCRIPT_TYPE_PUBKEY_HASH = 0; + SCRIPT_TYPE_SCRIPT_HASH = 1; + SCRIPT_TYPE_WITNESS_V0_PUBKEY_HASH = 2; + SCRIPT_TYPE_WITNESS_V0_SCRIPT_HASH = 3; + SCRIPT_TYPE_PUBKEY = 4; + SCRIPT_TYPE_MULTISIG = 5; + SCRIPT_TYPE_NULLDATA = 6; + SCRIPT_TYPE_NON_STANDARD = 7; + SCRIPT_TYPE_WITNESS_UNKNOWN = 8; + SCRIPT_TYPE_WITNESS_V1_TAPROOT = 9; +} + +message OutputDetail { + // The type of the output + OutputScriptType output_type = 1; + + // The address + string address = 2; + + // The pkscript in hex + string pk_script = 3; + + // The output index used in the raw transaction + int64 output_index = 4; + + // The value of the output coin in satoshis + int64 amount = 5; + + // Denotes if the output is controlled by the internal wallet + bool is_our_address = 6; +} + +message Transaction { + // The transaction hash + string tx_hash = 1; + + // The transaction amount, denominated in satoshis + int64 amount = 2; + + // The number of confirmations + int32 num_confirmations = 3; + + // The hash of the block this transaction was included in + string block_hash = 4; + + // The height of the block this transaction was included in + int32 block_height = 5; + + // Timestamp of this transaction + int64 time_stamp = 6; + + // Fees paid for this transaction + int64 total_fees = 7; + + // Addresses that received funds for this transaction. Deprecated as it is + // now incorporated in the output_details field. + repeated string dest_addresses = 8 [deprecated = true]; + + // Outputs that received funds for this transaction + repeated OutputDetail output_details = 11; + + // The raw transaction hex. + string raw_tx_hex = 9; + + // A label that was optionally set on transaction broadcast. + string label = 10; + + // PreviousOutpoints/Inputs of this transaction. + repeated PreviousOutPoint previous_outpoints = 12; +} + +message GetTransactionsRequest { + /* + The height from which to list transactions, inclusive. If this value is + greater than end_height, transactions will be read in reverse. + */ + int32 start_height = 1; + + /* + The height until which to list transactions, inclusive. To include + unconfirmed transactions, this value should be set to -1, which will + return transactions from start_height until the current chain tip and + unconfirmed transactions. If no end_height is provided, the call will + default to this option. + */ + int32 end_height = 2; + + // An optional filter to only include transactions relevant to an account. + string account = 3; +} + +message TransactionDetails { + // The list of transactions relevant to the wallet. + repeated Transaction transactions = 1; +} + +message FeeLimit { + oneof limit { + /* + The fee limit expressed as a fixed amount of satoshis. + + The fields fixed and fixed_msat are mutually exclusive. + */ + int64 fixed = 1; + + /* + The fee limit expressed as a fixed amount of millisatoshis. + + The fields fixed and fixed_msat are mutually exclusive. + */ + int64 fixed_msat = 3; + + // The fee limit expressed as a percentage of the payment amount. + int64 percent = 2; + } +} + +message SendRequest { + /* + The identity pubkey of the payment recipient. When using REST, this field + must be encoded as base64. + */ + bytes dest = 1; + + /* + The hex-encoded identity pubkey of the payment recipient. Deprecated now + that the REST gateway supports base64 encoding of bytes fields. + */ + string dest_string = 2 [deprecated = true]; + + /* + The amount to send expressed in satoshis. + + The fields amt and amt_msat are mutually exclusive. + */ + int64 amt = 3; + + /* + The amount to send expressed in millisatoshis. + + The fields amt and amt_msat are mutually exclusive. + */ + int64 amt_msat = 12; + + /* + The hash to use within the payment's HTLC. When using REST, this field + must be encoded as base64. + */ + bytes payment_hash = 4; + + /* + The hex-encoded hash to use within the payment's HTLC. Deprecated now + that the REST gateway supports base64 encoding of bytes fields. + */ + string payment_hash_string = 5 [deprecated = true]; + + /* + A bare-bones invoice for a payment within the Lightning Network. With the + details of the invoice, the sender has all the data necessary to send a + payment to the recipient. + */ + string payment_request = 6; + + /* + The CLTV delta from the current height that should be used to set the + timelock for the final hop. + */ + int32 final_cltv_delta = 7; + + /* + The maximum number of satoshis that will be paid as a fee of the payment. + This value can be represented either as a percentage of the amount being + sent, or as a fixed amount of the maximum fee the user is willing the pay to + send the payment. If not specified, lnd will use a default value of 100% + fees for small amounts (<=1k sat) or 5% fees for larger amounts. + */ + FeeLimit fee_limit = 8; + + /* + The channel id of the channel that must be taken to the first hop. If zero, + any channel may be used. + */ + uint64 outgoing_chan_id = 9 [jstype = JS_STRING]; + + /* + The pubkey of the last hop of the route. If empty, any hop may be used. + */ + bytes last_hop_pubkey = 13; + + /* + An optional maximum total time lock for the route. This should not exceed + lnd's `--max-cltv-expiry` setting. If zero, then the value of + `--max-cltv-expiry` is enforced. + */ + uint32 cltv_limit = 10; + + /* + An optional field that can be used to pass an arbitrary set of TLV records + to a peer which understands the new records. This can be used to pass + application specific data during the payment attempt. Record types are + required to be in the custom range >= 65536. When using REST, the values + must be encoded as base64. + */ + map dest_custom_records = 11; + + // If set, circular payments to self are permitted. + bool allow_self_payment = 14; + + /* + Features assumed to be supported by the final node. All transitive feature + dependencies must also be set properly. For a given feature bit pair, either + optional or remote may be set, but not both. If this field is nil or empty, + the router will try to load destination features from the graph as a + fallback. + */ + repeated FeatureBit dest_features = 15; + + /* + The payment address of the generated invoice. This is also called + payment secret in specifications (e.g. BOLT 11). + */ + bytes payment_addr = 16; +} + +message SendResponse { + string payment_error = 1; + bytes payment_preimage = 2; + Route payment_route = 3; + bytes payment_hash = 4; +} + +message SendToRouteRequest { + /* + The payment hash to use for the HTLC. When using REST, this field must be + encoded as base64. + */ + bytes payment_hash = 1; + + /* + An optional hex-encoded payment hash to be used for the HTLC. Deprecated now + that the REST gateway supports base64 encoding of bytes fields. + */ + string payment_hash_string = 2 [deprecated = true]; + + reserved 3; + + // Route that should be used to attempt to complete the payment. + Route route = 4; +} + +message ChannelAcceptRequest { + // The pubkey of the node that wishes to open an inbound channel. + bytes node_pubkey = 1; + + // The hash of the genesis block that the proposed channel resides in. + bytes chain_hash = 2; + + // The pending channel id. + bytes pending_chan_id = 3; + + // The funding amount in satoshis that initiator wishes to use in the + // channel. + uint64 funding_amt = 4; + + // The push amount of the proposed channel in millisatoshis. + uint64 push_amt = 5; + + // The dust limit of the initiator's commitment tx. + uint64 dust_limit = 6; + + // The maximum amount of coins in millisatoshis that can be pending in this + // channel. + uint64 max_value_in_flight = 7; + + // The minimum amount of satoshis the initiator requires us to have at all + // times. + uint64 channel_reserve = 8; + + // The smallest HTLC in millisatoshis that the initiator will accept. + uint64 min_htlc = 9; + + // The initial fee rate that the initiator suggests for both commitment + // transactions. + uint64 fee_per_kw = 10; + + /* + The number of blocks to use for the relative time lock in the pay-to-self + output of both commitment transactions. + */ + uint32 csv_delay = 11; + + // The total number of incoming HTLC's that the initiator will accept. + uint32 max_accepted_htlcs = 12; + + // A bit-field which the initiator uses to specify proposed channel + // behavior. + uint32 channel_flags = 13; + + // The commitment type the initiator wishes to use for the proposed channel. + CommitmentType commitment_type = 14; + + // Whether the initiator wants to open a zero-conf channel via the channel + // type. + bool wants_zero_conf = 15; + + // Whether the initiator wants to use the scid-alias channel type. This is + // separate from the feature bit. + bool wants_scid_alias = 16; +} + +message ChannelAcceptResponse { + // Whether or not the client accepts the channel. + bool accept = 1; + + // The pending channel id to which this response applies. + bytes pending_chan_id = 2; + + /* + An optional error to send the initiating party to indicate why the channel + was rejected. This field *should not* contain sensitive information, it will + be sent to the initiating party. This field should only be set if accept is + false, the channel will be rejected if an error is set with accept=true + because the meaning of this response is ambiguous. Limited to 500 + characters. + */ + string error = 3; + + /* + The upfront shutdown address to use if the initiating peer supports option + upfront shutdown script (see ListPeers for the features supported). Note + that the channel open will fail if this value is set for a peer that does + not support this feature bit. + */ + string upfront_shutdown = 4; + + /* + The csv delay (in blocks) that we require for the remote party. + */ + uint32 csv_delay = 5; + + /* + The reserve amount in satoshis that we require the remote peer to adhere to. + We require that the remote peer always have some reserve amount allocated to + them so that there is always a disincentive to broadcast old state (if they + hold 0 sats on their side of the channel, there is nothing to lose). + */ + uint64 reserve_sat = 6; + + /* + The maximum amount of funds in millisatoshis that we allow the remote peer + to have in outstanding htlcs. + */ + uint64 in_flight_max_msat = 7; + + /* + The maximum number of htlcs that the remote peer can offer us. + */ + uint32 max_htlc_count = 8; + + /* + The minimum value in millisatoshis for incoming htlcs on the channel. + */ + uint64 min_htlc_in = 9; + + /* + The number of confirmations we require before we consider the channel open. + */ + uint32 min_accept_depth = 10; + + /* + Whether the responder wants this to be a zero-conf channel. This will fail + if either side does not have the scid-alias feature bit set. The minimum + depth field must be zero if this is true. + */ + bool zero_conf = 11; +} + +message ChannelPoint { + oneof funding_txid { + /* + Txid of the funding transaction. When using REST, this field must be + encoded as base64. + */ + bytes funding_txid_bytes = 1; + + /* + Hex-encoded string representing the byte-reversed hash of the funding + transaction. + */ + string funding_txid_str = 2; + } + + // The index of the output of the funding transaction + uint32 output_index = 3; +} + +message OutPoint { + // Raw bytes representing the transaction id. + bytes txid_bytes = 1; + + // Reversed, hex-encoded string representing the transaction id. + string txid_str = 2; + + // The index of the output on the transaction. + uint32 output_index = 3; +} + +message PreviousOutPoint { + // The outpoint in format txid:n. + string outpoint = 1; + + // Denotes if the outpoint is controlled by the internal wallet. + // The flag will only detect p2wkh, np2wkh and p2tr inputs as its own. + bool is_our_output = 2; +} + +message LightningAddress { + // The identity pubkey of the Lightning node. + string pubkey = 1; + + // The network location of the lightning node, e.g. `69.69.69.69:1337` or + // `localhost:10011`. + string host = 2; +} + +enum CoinSelectionStrategy { + // Use the coin selection strategy defined in the global configuration + // (lnd.conf). + STRATEGY_USE_GLOBAL_CONFIG = 0; + + // Select the largest available coins first during coin selection. + STRATEGY_LARGEST = 1; + + // Randomly select the available coins during coin selection. + STRATEGY_RANDOM = 2; +} + +message EstimateFeeRequest { + // The map from addresses to amounts for the transaction. + map AddrToAmount = 1; + + // The target number of blocks that this transaction should be confirmed + // by. + int32 target_conf = 2; + + // The minimum number of confirmations each one of your outputs used for + // the transaction must satisfy. + int32 min_confs = 3; + + // Whether unconfirmed outputs should be used as inputs for the transaction. + bool spend_unconfirmed = 4; + + // The strategy to use for selecting coins during fees estimation. + CoinSelectionStrategy coin_selection_strategy = 5; +} + +message EstimateFeeResponse { + // The total fee in satoshis. + int64 fee_sat = 1; + + // Deprecated, use sat_per_vbyte. + // The fee rate in satoshi/vbyte. + int64 feerate_sat_per_byte = 2 [deprecated = true]; + + // The fee rate in satoshi/vbyte. + uint64 sat_per_vbyte = 3; +} + +message SendManyRequest { + // The map from addresses to amounts + map AddrToAmount = 1; + + // The target number of blocks that this transaction should be confirmed + // by. + int32 target_conf = 3; + + // A manual fee rate set in sat/vbyte that should be used when crafting the + // transaction. + uint64 sat_per_vbyte = 4; + + // Deprecated, use sat_per_vbyte. + // A manual fee rate set in sat/vbyte that should be used when crafting the + // transaction. + int64 sat_per_byte = 5 [deprecated = true]; + + // An optional label for the transaction, limited to 500 characters. + string label = 6; + + // The minimum number of confirmations each one of your outputs used for + // the transaction must satisfy. + int32 min_confs = 7; + + // Whether unconfirmed outputs should be used as inputs for the transaction. + bool spend_unconfirmed = 8; + + // The strategy to use for selecting coins during sending many requests. + CoinSelectionStrategy coin_selection_strategy = 9; +} +message SendManyResponse { + // The id of the transaction + string txid = 1; +} + +message SendCoinsRequest { + // The address to send coins to + string addr = 1; + + // The amount in satoshis to send + int64 amount = 2; + + // The target number of blocks that this transaction should be confirmed + // by. + int32 target_conf = 3; + + // A manual fee rate set in sat/vbyte that should be used when crafting the + // transaction. + uint64 sat_per_vbyte = 4; + + // Deprecated, use sat_per_vbyte. + // A manual fee rate set in sat/vbyte that should be used when crafting the + // transaction. + int64 sat_per_byte = 5 [deprecated = true]; + + /* + If set, then the amount field will be ignored, and lnd will attempt to + send all the coins under control of the internal wallet to the specified + address. + */ + bool send_all = 6; + + // An optional label for the transaction, limited to 500 characters. + string label = 7; + + // The minimum number of confirmations each one of your outputs used for + // the transaction must satisfy. + int32 min_confs = 8; + + // Whether unconfirmed outputs should be used as inputs for the transaction. + bool spend_unconfirmed = 9; + + // The strategy to use for selecting coins. + CoinSelectionStrategy coin_selection_strategy = 10; +} +message SendCoinsResponse { + // The transaction ID of the transaction + string txid = 1; +} + +message ListUnspentRequest { + // The minimum number of confirmations to be included. + int32 min_confs = 1; + + // The maximum number of confirmations to be included. + int32 max_confs = 2; + + // An optional filter to only include outputs belonging to an account. + string account = 3; +} +message ListUnspentResponse { + // A list of utxos + repeated Utxo utxos = 1; +} + +/* +`AddressType` has to be one of: + +- `p2wkh`: Pay to witness key hash (`WITNESS_PUBKEY_HASH` = 0) +- `np2wkh`: Pay to nested witness key hash (`NESTED_PUBKEY_HASH` = 1) +- `p2tr`: Pay to taproot pubkey (`TAPROOT_PUBKEY` = 4) +*/ +enum AddressType { + WITNESS_PUBKEY_HASH = 0; + NESTED_PUBKEY_HASH = 1; + UNUSED_WITNESS_PUBKEY_HASH = 2; + UNUSED_NESTED_PUBKEY_HASH = 3; + TAPROOT_PUBKEY = 4; + UNUSED_TAPROOT_PUBKEY = 5; +} + +message NewAddressRequest { + // The type of address to generate. + AddressType type = 1; + + /* + The name of the account to generate a new address for. If empty, the + default wallet account is used. + */ + string account = 2; +} +message NewAddressResponse { + // The newly generated wallet address + string address = 1; +} + +message SignMessageRequest { + /* + The message to be signed. When using REST, this field must be encoded as + base64. + */ + bytes msg = 1; + + /* + Instead of the default double-SHA256 hashing of the message before signing, + only use one round of hashing instead. + */ + bool single_hash = 2; +} +message SignMessageResponse { + // The signature for the given message + string signature = 1; +} + +message VerifyMessageRequest { + /* + The message over which the signature is to be verified. When using REST, + this field must be encoded as base64. + */ + bytes msg = 1; + + // The signature to be verified over the given message + string signature = 2; +} +message VerifyMessageResponse { + // Whether the signature was valid over the given message + bool valid = 1; + + // The pubkey recovered from the signature + string pubkey = 2; +} + +message ConnectPeerRequest { + /* + Lightning address of the peer to connect to. + */ + LightningAddress addr = 1; + + /* + If set, the daemon will attempt to persistently connect to the target + peer. Otherwise, the call will be synchronous. + */ + bool perm = 2; + + /* + The connection timeout value (in seconds) for this request. It won't affect + other requests. + */ + uint64 timeout = 3; +} +message ConnectPeerResponse { +} + +message DisconnectPeerRequest { + // The pubkey of the node to disconnect from + string pub_key = 1; +} +message DisconnectPeerResponse { +} + +message HTLC { + bool incoming = 1; + int64 amount = 2; + bytes hash_lock = 3; + uint32 expiration_height = 4; + + // Index identifying the htlc on the channel. + uint64 htlc_index = 5; + + // If this HTLC is involved in a forwarding operation, this field indicates + // the forwarding channel. For an outgoing htlc, it is the incoming channel. + // For an incoming htlc, it is the outgoing channel. When the htlc + // originates from this node or this node is the final destination, + // forwarding_channel will be zero. The forwarding channel will also be zero + // for htlcs that need to be forwarded but don't have a forwarding decision + // persisted yet. + uint64 forwarding_channel = 6; + + // Index identifying the htlc on the forwarding channel. + uint64 forwarding_htlc_index = 7; +} + +enum CommitmentType { + /* + Returned when the commitment type isn't known or unavailable. + */ + UNKNOWN_COMMITMENT_TYPE = 0; + + /* + A channel using the legacy commitment format having tweaked to_remote + keys. + */ + LEGACY = 1; + + /* + A channel that uses the modern commitment format where the key in the + output of the remote party does not change each state. This makes back + up and recovery easier as when the channel is closed, the funds go + directly to that key. + */ + STATIC_REMOTE_KEY = 2; + + /* + A channel that uses a commitment format that has anchor outputs on the + commitments, allowing fee bumping after a force close transaction has + been broadcast. + */ + ANCHORS = 3; + + /* + A channel that uses a commitment type that builds upon the anchors + commitment format, but in addition requires a CLTV clause to spend outputs + paying to the channel initiator. This is intended for use on leased channels + to guarantee that the channel initiator has no incentives to close a leased + channel before its maturity date. + */ + SCRIPT_ENFORCED_LEASE = 4; + + /* + A channel that uses musig2 for the funding output, and the new tapscript + features where relevant. + */ + // TODO(roasbeef): need script enforce mirror type for the above as well? + SIMPLE_TAPROOT = 5; +} + +message ChannelConstraints { + /* + The CSV delay expressed in relative blocks. If the channel is force closed, + we will need to wait for this many blocks before we can regain our funds. + */ + uint32 csv_delay = 1; + + // The minimum satoshis this node is required to reserve in its balance. + uint64 chan_reserve_sat = 2; + + // The dust limit (in satoshis) of the initiator's commitment tx. + uint64 dust_limit_sat = 3; + + // The maximum amount of coins in millisatoshis that can be pending in this + // channel. + uint64 max_pending_amt_msat = 4; + + // The smallest HTLC in millisatoshis that the initiator will accept. + uint64 min_htlc_msat = 5; + + // The total number of incoming HTLC's that the initiator will accept. + uint32 max_accepted_htlcs = 6; +} + +message Channel { + // Whether this channel is active or not + bool active = 1; + + // The identity pubkey of the remote node + string remote_pubkey = 2; + + /* + The outpoint (txid:index) of the funding transaction. With this value, Bob + will be able to generate a signature for Alice's version of the commitment + transaction. + */ + string channel_point = 3; + + /* + The unique channel ID for the channel. The first 3 bytes are the block + height, the next 3 the index within the block, and the last 2 bytes are the + output index for the channel. + */ + uint64 chan_id = 4 [jstype = JS_STRING]; + + // The total amount of funds held in this channel + int64 capacity = 5; + + // This node's current balance in this channel + int64 local_balance = 6; + + // The counterparty's current balance in this channel + int64 remote_balance = 7; + + /* + The amount calculated to be paid in fees for the current set of commitment + transactions. The fee amount is persisted with the channel in order to + allow the fee amount to be removed and recalculated with each channel state + update, including updates that happen after a system restart. + */ + int64 commit_fee = 8; + + // The weight of the commitment transaction + int64 commit_weight = 9; + + /* + The required number of satoshis per kilo-weight that the requester will pay + at all times, for both the funding transaction and commitment transaction. + This value can later be updated once the channel is open. + */ + int64 fee_per_kw = 10; + + // The unsettled balance in this channel + int64 unsettled_balance = 11; + + /* + The total number of satoshis we've sent within this channel. + */ + int64 total_satoshis_sent = 12; + + /* + The total number of satoshis we've received within this channel. + */ + int64 total_satoshis_received = 13; + + /* + The total number of updates conducted within this channel. + */ + uint64 num_updates = 14; + + /* + The list of active, uncleared HTLCs currently pending within the channel. + */ + repeated HTLC pending_htlcs = 15; + + /* + Deprecated. The CSV delay expressed in relative blocks. If the channel is + force closed, we will need to wait for this many blocks before we can regain + our funds. + */ + uint32 csv_delay = 16 [deprecated = true]; + + // Whether this channel is advertised to the network or not. + bool private = 17; + + // True if we were the ones that created the channel. + bool initiator = 18; + + // A set of flags showing the current state of the channel. + string chan_status_flags = 19; + + // Deprecated. The minimum satoshis this node is required to reserve in its + // balance. + int64 local_chan_reserve_sat = 20 [deprecated = true]; + + /* + Deprecated. The minimum satoshis the other node is required to reserve in + its balance. + */ + int64 remote_chan_reserve_sat = 21 [deprecated = true]; + + // Deprecated. Use commitment_type. + bool static_remote_key = 22 [deprecated = true]; + + // The commitment type used by this channel. + CommitmentType commitment_type = 26; + + /* + The number of seconds that the channel has been monitored by the channel + scoring system. Scores are currently not persisted, so this value may be + less than the lifetime of the channel [EXPERIMENTAL]. + */ + int64 lifetime = 23; + + /* + The number of seconds that the remote peer has been observed as being online + by the channel scoring system over the lifetime of the channel + [EXPERIMENTAL]. + */ + int64 uptime = 24; + + /* + Close address is the address that we will enforce payout to on cooperative + close if the channel was opened utilizing option upfront shutdown. This + value can be set on channel open by setting close_address in an open channel + request. If this value is not set, you can still choose a payout address by + cooperatively closing with the delivery_address field set. + */ + string close_address = 25; + + /* + The amount that the initiator of the channel optionally pushed to the remote + party on channel open. This amount will be zero if the channel initiator did + not push any funds to the remote peer. If the initiator field is true, we + pushed this amount to our peer, if it is false, the remote peer pushed this + amount to us. + */ + uint64 push_amount_sat = 27; + + /* + This uint32 indicates if this channel is to be considered 'frozen'. A + frozen channel doest not allow a cooperative channel close by the + initiator. The thaw_height is the height that this restriction stops + applying to the channel. This field is optional, not setting it or using a + value of zero will mean the channel has no additional restrictions. The + height can be interpreted in two ways: as a relative height if the value is + less than 500,000, or as an absolute height otherwise. + */ + uint32 thaw_height = 28; + + // List constraints for the local node. + ChannelConstraints local_constraints = 29; + + // List constraints for the remote node. + ChannelConstraints remote_constraints = 30; + + /* + This lists out the set of alias short channel ids that exist for a channel. + This may be empty. + */ + repeated uint64 alias_scids = 31; + + // Whether or not this is a zero-conf channel. + bool zero_conf = 32; + + // This is the confirmed / on-chain zero-conf SCID. + uint64 zero_conf_confirmed_scid = 33; + + // The configured alias name of our peer. + string peer_alias = 34; + + // This is the peer SCID alias. + uint64 peer_scid_alias = 35 [jstype = JS_STRING]; + + /* + An optional note-to-self to go along with the channel containing some + useful information. This is only ever stored locally and in no way impacts + the channel's operation. + */ + string memo = 36; +} + +message ListChannelsRequest { + bool active_only = 1; + bool inactive_only = 2; + bool public_only = 3; + bool private_only = 4; + + /* + Filters the response for channels with a target peer's pubkey. If peer is + empty, all channels will be returned. + */ + bytes peer = 5; + + // Informs the server if the peer alias lookup per channel should be + // enabled. It is turned off by default in order to avoid degradation of + // performance for existing clients. + bool peer_alias_lookup = 6; +} +message ListChannelsResponse { + // The list of active channels + repeated Channel channels = 11; +} + +message AliasMap { + /* + For non-zero-conf channels, this is the confirmed SCID. Otherwise, this is + the first assigned "base" alias. + */ + uint64 base_scid = 1; + + // The set of all aliases stored for the base SCID. + repeated uint64 aliases = 2; +} +message ListAliasesRequest { +} +message ListAliasesResponse { + repeated AliasMap alias_maps = 1; +} + +enum Initiator { + INITIATOR_UNKNOWN = 0; + INITIATOR_LOCAL = 1; + INITIATOR_REMOTE = 2; + INITIATOR_BOTH = 3; +} + +message ChannelCloseSummary { + // The outpoint (txid:index) of the funding transaction. + string channel_point = 1; + + // The unique channel ID for the channel. + uint64 chan_id = 2 [jstype = JS_STRING]; + + // The hash of the genesis block that this channel resides within. + string chain_hash = 3; + + // The txid of the transaction which ultimately closed this channel. + string closing_tx_hash = 4; + + // Public key of the remote peer that we formerly had a channel with. + string remote_pubkey = 5; + + // Total capacity of the channel. + int64 capacity = 6; + + // Height at which the funding transaction was spent. + uint32 close_height = 7; + + // Settled balance at the time of channel closure + int64 settled_balance = 8; + + // The sum of all the time-locked outputs at the time of channel closure + int64 time_locked_balance = 9; + + enum ClosureType { + COOPERATIVE_CLOSE = 0; + LOCAL_FORCE_CLOSE = 1; + REMOTE_FORCE_CLOSE = 2; + BREACH_CLOSE = 3; + FUNDING_CANCELED = 4; + ABANDONED = 5; + } + + // Details on how the channel was closed. + ClosureType close_type = 10; + + /* + Open initiator is the party that initiated opening the channel. Note that + this value may be unknown if the channel was closed before we migrated to + store open channel information after close. + */ + Initiator open_initiator = 11; + + /* + Close initiator indicates which party initiated the close. This value will + be unknown for channels that were cooperatively closed before we started + tracking cooperative close initiators. Note that this indicates which party + initiated a close, and it is possible for both to initiate cooperative or + force closes, although only one party's close will be confirmed on chain. + */ + Initiator close_initiator = 12; + + repeated Resolution resolutions = 13; + + /* + This lists out the set of alias short channel ids that existed for the + closed channel. This may be empty. + */ + repeated uint64 alias_scids = 14; + + // The confirmed SCID for a zero-conf channel. + uint64 zero_conf_confirmed_scid = 15 [jstype = JS_STRING]; +} + +enum ResolutionType { + TYPE_UNKNOWN = 0; + + // We resolved an anchor output. + ANCHOR = 1; + + /* + We are resolving an incoming htlc on chain. This if this htlc is + claimed, we swept the incoming htlc with the preimage. If it is timed + out, our peer swept the timeout path. + */ + INCOMING_HTLC = 2; + + /* + We are resolving an outgoing htlc on chain. If this htlc is claimed, + the remote party swept the htlc with the preimage. If it is timed out, + we swept it with the timeout path. + */ + OUTGOING_HTLC = 3; + + // We force closed and need to sweep our time locked commitment output. + COMMIT = 4; +} + +enum ResolutionOutcome { + // Outcome unknown. + OUTCOME_UNKNOWN = 0; + + // An output was claimed on chain. + CLAIMED = 1; + + // An output was left unclaimed on chain. + UNCLAIMED = 2; + + /* + ResolverOutcomeAbandoned indicates that an output that we did not + claim on chain, for example an anchor that we did not sweep and a + third party claimed on chain, or a htlc that we could not decode + so left unclaimed. + */ + ABANDONED = 3; + + /* + If we force closed our channel, our htlcs need to be claimed in two + stages. This outcome represents the broadcast of a timeout or success + transaction for this two stage htlc claim. + */ + FIRST_STAGE = 4; + + // A htlc was timed out on chain. + TIMEOUT = 5; +} + +message Resolution { + // The type of output we are resolving. + ResolutionType resolution_type = 1; + + // The outcome of our on chain action that resolved the outpoint. + ResolutionOutcome outcome = 2; + + // The outpoint that was spent by the resolution. + OutPoint outpoint = 3; + + // The amount that was claimed by the resolution. + uint64 amount_sat = 4; + + // The hex-encoded transaction ID of the sweep transaction that spent the + // output. + string sweep_txid = 5; +} + +message ClosedChannelsRequest { + bool cooperative = 1; + bool local_force = 2; + bool remote_force = 3; + bool breach = 4; + bool funding_canceled = 5; + bool abandoned = 6; +} + +message ClosedChannelsResponse { + repeated ChannelCloseSummary channels = 1; +} + +message Peer { + // The identity pubkey of the peer + string pub_key = 1; + + // Network address of the peer; eg `127.0.0.1:10011` + string address = 3; + + // Bytes of data transmitted to this peer + uint64 bytes_sent = 4; + + // Bytes of data transmitted from this peer + uint64 bytes_recv = 5; + + // Satoshis sent to this peer + int64 sat_sent = 6; + + // Satoshis received from this peer + int64 sat_recv = 7; + + // A channel is inbound if the counterparty initiated the channel + bool inbound = 8; + + // Ping time to this peer + int64 ping_time = 9; + + enum SyncType { + /* + Denotes that we cannot determine the peer's current sync type. + */ + UNKNOWN_SYNC = 0; + + /* + Denotes that we are actively receiving new graph updates from the peer. + */ + ACTIVE_SYNC = 1; + + /* + Denotes that we are not receiving new graph updates from the peer. + */ + PASSIVE_SYNC = 2; + + /* + Denotes that this peer is pinned into an active sync. + */ + PINNED_SYNC = 3; + } + + // The type of sync we are currently performing with this peer. + SyncType sync_type = 10; + + // Features advertised by the remote peer in their init message. + map features = 11; + + /* + The latest errors received from our peer with timestamps, limited to the 10 + most recent errors. These errors are tracked across peer connections, but + are not persisted across lnd restarts. Note that these errors are only + stored for peers that we have channels open with, to prevent peers from + spamming us with errors at no cost. + */ + repeated TimestampedError errors = 12; + + /* + The number of times we have recorded this peer going offline or coming + online, recorded across restarts. Note that this value is decreased over + time if the peer has not recently flapped, so that we can forgive peers + with historically high flap counts. + */ + int32 flap_count = 13; + + /* + The timestamp of the last flap we observed for this peer. If this value is + zero, we have not observed any flaps for this peer. + */ + int64 last_flap_ns = 14; + + /* + The last ping payload the peer has sent to us. + */ + bytes last_ping_payload = 15; +} + +message TimestampedError { + // The unix timestamp in seconds when the error occurred. + uint64 timestamp = 1; + + // The string representation of the error sent by our peer. + string error = 2; +} + +message ListPeersRequest { + /* + If true, only the last error that our peer sent us will be returned with + the peer's information, rather than the full set of historic errors we have + stored. + */ + bool latest_error = 1; +} +message ListPeersResponse { + // The list of currently connected peers + repeated Peer peers = 1; +} + +message PeerEventSubscription { +} + +message PeerEvent { + // The identity pubkey of the peer. + string pub_key = 1; + + enum EventType { + PEER_ONLINE = 0; + PEER_OFFLINE = 1; + } + + EventType type = 2; +} + +message GetInfoRequest { +} +message GetInfoResponse { + // The version of the LND software that the node is running. + string version = 14; + + // The SHA1 commit hash that the daemon is compiled with. + string commit_hash = 20; + + // The identity pubkey of the current node. + string identity_pubkey = 1; + + // If applicable, the alias of the current node, e.g. "bob" + string alias = 2; + + // The color of the current node in hex code format + string color = 17; + + // Number of pending channels + uint32 num_pending_channels = 3; + + // Number of active channels + uint32 num_active_channels = 4; + + // Number of inactive channels + uint32 num_inactive_channels = 15; + + // Number of peers + uint32 num_peers = 5; + + // The node's current view of the height of the best block + uint32 block_height = 6; + + // The node's current view of the hash of the best block + string block_hash = 8; + + // Timestamp of the block best known to the wallet + int64 best_header_timestamp = 13; + + // Whether the wallet's view is synced to the main chain + bool synced_to_chain = 9; + + // Whether we consider ourselves synced with the public channel graph. + bool synced_to_graph = 18; + + /* + Whether the current node is connected to testnet. This field is + deprecated and the network field should be used instead + */ + bool testnet = 10 [deprecated = true]; + + reserved 11; + + /* + A list of active chains the node is connected to. This will only + ever contain a single entry since LND will only ever have a single + chain backend during its lifetime. + */ + repeated Chain chains = 16; + + // The URIs of the current node. + repeated string uris = 12; + + /* + Features that our node has advertised in our init message, node + announcements and invoices. + */ + map features = 19; + + /* + Indicates whether the HTLC interceptor API is in always-on mode. + */ + bool require_htlc_interceptor = 21; + + // Indicates whether final htlc resolutions are stored on disk. + bool store_final_htlc_resolutions = 22; +} + +message GetDebugInfoRequest { +} + +message GetDebugInfoResponse { + map config = 1; + repeated string log = 2; +} + +message GetRecoveryInfoRequest { +} +message GetRecoveryInfoResponse { + // Whether the wallet is in recovery mode + bool recovery_mode = 1; + + // Whether the wallet recovery progress is finished + bool recovery_finished = 2; + + // The recovery progress, ranging from 0 to 1. + double progress = 3; +} + +message Chain { + // Deprecated. The chain is now always assumed to be bitcoin. + // The blockchain the node is on (must be bitcoin) + string chain = 1 [deprecated = true]; + + // The network the node is on (eg regtest, testnet, mainnet) + string network = 2; +} + +message ConfirmationUpdate { + bytes block_sha = 1; + int32 block_height = 2; + + uint32 num_confs_left = 3; +} + +message ChannelOpenUpdate { + ChannelPoint channel_point = 1; +} + +message ChannelCloseUpdate { + bytes closing_txid = 1; + + bool success = 2; +} + +message CloseChannelRequest { + /* + The outpoint (txid:index) of the funding transaction. With this value, Bob + will be able to generate a signature for Alice's version of the commitment + transaction. + */ + ChannelPoint channel_point = 1; + + // If true, then the channel will be closed forcibly. This means the + // current commitment transaction will be signed and broadcast. + bool force = 2; + + // The target number of blocks that the closure transaction should be + // confirmed by. + int32 target_conf = 3; + + // Deprecated, use sat_per_vbyte. + // A manual fee rate set in sat/vbyte that should be used when crafting the + // closure transaction. + int64 sat_per_byte = 4 [deprecated = true]; + + /* + An optional address to send funds to in the case of a cooperative close. + If the channel was opened with an upfront shutdown script and this field + is set, the request to close will fail because the channel must pay out + to the upfront shutdown addresss. + */ + string delivery_address = 5; + + // A manual fee rate set in sat/vbyte that should be used when crafting the + // closure transaction. + uint64 sat_per_vbyte = 6; + + // The maximum fee rate the closer is willing to pay. + // + // NOTE: This field is only respected if we're the initiator of the channel. + uint64 max_fee_per_vbyte = 7; + + // If true, then the rpc call will not block while it awaits a closing txid. + // Consequently this RPC call will not return a closing txid if this value + // is set. + bool no_wait = 8; +} + +message CloseStatusUpdate { + oneof update { + PendingUpdate close_pending = 1; + ChannelCloseUpdate chan_close = 3; + InstantUpdate close_instant = 4; + } +} + +message PendingUpdate { + bytes txid = 1; + uint32 output_index = 2; +} + +message InstantUpdate { +} + +message ReadyForPsbtFunding { + /* + The P2WSH address of the channel funding multisig address that the below + specified amount in satoshis needs to be sent to. + */ + string funding_address = 1; + + /* + The exact amount in satoshis that needs to be sent to the above address to + fund the pending channel. + */ + int64 funding_amount = 2; + + /* + A raw PSBT that contains the pending channel output. If a base PSBT was + provided in the PsbtShim, this is the base PSBT with one additional output. + If no base PSBT was specified, this is an otherwise empty PSBT with exactly + one output. + */ + bytes psbt = 3; +} + +message BatchOpenChannelRequest { + // The list of channels to open. + repeated BatchOpenChannel channels = 1; + + // The target number of blocks that the funding transaction should be + // confirmed by. + int32 target_conf = 2; + + // A manual fee rate set in sat/vByte that should be used when crafting the + // funding transaction. + int64 sat_per_vbyte = 3; + + // The minimum number of confirmations each one of your outputs used for + // the funding transaction must satisfy. + int32 min_confs = 4; + + // Whether unconfirmed outputs should be used as inputs for the funding + // transaction. + bool spend_unconfirmed = 5; + + // An optional label for the batch transaction, limited to 500 characters. + string label = 6; + + // The strategy to use for selecting coins during batch opening channels. + CoinSelectionStrategy coin_selection_strategy = 7; +} + +message BatchOpenChannel { + // The pubkey of the node to open a channel with. When using REST, this + // field must be encoded as base64. + bytes node_pubkey = 1; + + // The number of satoshis the wallet should commit to the channel. + int64 local_funding_amount = 2; + + // The number of satoshis to push to the remote side as part of the initial + // commitment state. + int64 push_sat = 3; + + // Whether this channel should be private, not announced to the greater + // network. + bool private = 4; + + // The minimum value in millisatoshi we will require for incoming HTLCs on + // the channel. + int64 min_htlc_msat = 5; + + // The delay we require on the remote's commitment transaction. If this is + // not set, it will be scaled automatically with the channel size. + uint32 remote_csv_delay = 6; + + /* + Close address is an optional address which specifies the address to which + funds should be paid out to upon cooperative close. This field may only be + set if the peer supports the option upfront feature bit (call listpeers + to check). The remote peer will only accept cooperative closes to this + address if it is set. + + Note: If this value is set on channel creation, you will *not* be able to + cooperatively close out to a different address. + */ + string close_address = 7; + + /* + An optional, unique identifier of 32 random bytes that will be used as the + pending channel ID to identify the channel while it is in the pre-pending + state. + */ + bytes pending_chan_id = 8; + + /* + The explicit commitment type to use. Note this field will only be used if + the remote peer supports explicit channel negotiation. + */ + CommitmentType commitment_type = 9; + + /* + The maximum amount of coins in millisatoshi that can be pending within + the channel. It only applies to the remote party. + */ + uint64 remote_max_value_in_flight_msat = 10; + + /* + The maximum number of concurrent HTLCs we will allow the remote party to add + to the commitment transaction. + */ + uint32 remote_max_htlcs = 11; + + /* + Max local csv is the maximum csv delay we will allow for our own commitment + transaction. + */ + uint32 max_local_csv = 12; + + /* + If this is true, then a zero-conf channel open will be attempted. + */ + bool zero_conf = 13; + + /* + If this is true, then an option-scid-alias channel-type open will be + attempted. + */ + bool scid_alias = 14; + + /* + The base fee charged regardless of the number of milli-satoshis sent. + */ + uint64 base_fee = 15; + + /* + The fee rate in ppm (parts per million) that will be charged in + proportion of the value of each forwarded HTLC. + */ + uint64 fee_rate = 16; + + /* + If use_base_fee is true the open channel announcement will update the + channel base fee with the value specified in base_fee. In the case of + a base_fee of 0 use_base_fee is needed downstream to distinguish whether + to use the default base fee value specified in the config or 0. + */ + bool use_base_fee = 17; + + /* + If use_fee_rate is true the open channel announcement will update the + channel fee rate with the value specified in fee_rate. In the case of + a fee_rate of 0 use_fee_rate is needed downstream to distinguish whether + to use the default fee rate value specified in the config or 0. + */ + bool use_fee_rate = 18; + + /* + The number of satoshis we require the remote peer to reserve. This value, + if specified, must be above the dust limit and below 20% of the channel + capacity. + */ + uint64 remote_chan_reserve_sat = 19; + + /* + An optional note-to-self to go along with the channel containing some + useful information. This is only ever stored locally and in no way impacts + the channel's operation. + */ + string memo = 20; +} + +message BatchOpenChannelResponse { + repeated PendingUpdate pending_channels = 1; +} + +message OpenChannelRequest { + // A manual fee rate set in sat/vbyte that should be used when crafting the + // funding transaction. + uint64 sat_per_vbyte = 1; + + /* + The pubkey of the node to open a channel with. When using REST, this field + must be encoded as base64. + */ + bytes node_pubkey = 2; + + /* + The hex encoded pubkey of the node to open a channel with. Deprecated now + that the REST gateway supports base64 encoding of bytes fields. + */ + string node_pubkey_string = 3 [deprecated = true]; + + // The number of satoshis the wallet should commit to the channel + int64 local_funding_amount = 4; + + // The number of satoshis to push to the remote side as part of the initial + // commitment state + int64 push_sat = 5; + + // The target number of blocks that the funding transaction should be + // confirmed by. + int32 target_conf = 6; + + // Deprecated, use sat_per_vbyte. + // A manual fee rate set in sat/vbyte that should be used when crafting the + // funding transaction. + int64 sat_per_byte = 7 [deprecated = true]; + + // Whether this channel should be private, not announced to the greater + // network. + bool private = 8; + + // The minimum value in millisatoshi we will require for incoming HTLCs on + // the channel. + int64 min_htlc_msat = 9; + + // The delay we require on the remote's commitment transaction. If this is + // not set, it will be scaled automatically with the channel size. + uint32 remote_csv_delay = 10; + + // The minimum number of confirmations each one of your outputs used for + // the funding transaction must satisfy. + int32 min_confs = 11; + + // Whether unconfirmed outputs should be used as inputs for the funding + // transaction. + bool spend_unconfirmed = 12; + + /* + Close address is an optional address which specifies the address to which + funds should be paid out to upon cooperative close. This field may only be + set if the peer supports the option upfront feature bit (call listpeers + to check). The remote peer will only accept cooperative closes to this + address if it is set. + + Note: If this value is set on channel creation, you will *not* be able to + cooperatively close out to a different address. + */ + string close_address = 13; + + /* + Funding shims are an optional argument that allow the caller to intercept + certain funding functionality. For example, a shim can be provided to use a + particular key for the commitment key (ideally cold) rather than use one + that is generated by the wallet as normal, or signal that signing will be + carried out in an interactive manner (PSBT based). + */ + FundingShim funding_shim = 14; + + /* + The maximum amount of coins in millisatoshi that can be pending within + the channel. It only applies to the remote party. + */ + uint64 remote_max_value_in_flight_msat = 15; + + /* + The maximum number of concurrent HTLCs we will allow the remote party to add + to the commitment transaction. + */ + uint32 remote_max_htlcs = 16; + + /* + Max local csv is the maximum csv delay we will allow for our own commitment + transaction. + */ + uint32 max_local_csv = 17; + + /* + The explicit commitment type to use. Note this field will only be used if + the remote peer supports explicit channel negotiation. + */ + CommitmentType commitment_type = 18; + + /* + If this is true, then a zero-conf channel open will be attempted. + */ + bool zero_conf = 19; + + /* + If this is true, then an option-scid-alias channel-type open will be + attempted. + */ + bool scid_alias = 20; + + /* + The base fee charged regardless of the number of milli-satoshis sent. + */ + uint64 base_fee = 21; + + /* + The fee rate in ppm (parts per million) that will be charged in + proportion of the value of each forwarded HTLC. + */ + uint64 fee_rate = 22; + + /* + If use_base_fee is true the open channel announcement will update the + channel base fee with the value specified in base_fee. In the case of + a base_fee of 0 use_base_fee is needed downstream to distinguish whether + to use the default base fee value specified in the config or 0. + */ + bool use_base_fee = 23; + + /* + If use_fee_rate is true the open channel announcement will update the + channel fee rate with the value specified in fee_rate. In the case of + a fee_rate of 0 use_fee_rate is needed downstream to distinguish whether + to use the default fee rate value specified in the config or 0. + */ + bool use_fee_rate = 24; + + /* + The number of satoshis we require the remote peer to reserve. This value, + if specified, must be above the dust limit and below 20% of the channel + capacity. + */ + uint64 remote_chan_reserve_sat = 25; + + /* + If set, then lnd will attempt to commit all the coins under control of the + internal wallet to open the channel, and the LocalFundingAmount field must + be zero and is ignored. + */ + bool fund_max = 26; + + /* + An optional note-to-self to go along with the channel containing some + useful information. This is only ever stored locally and in no way impacts + the channel's operation. + */ + string memo = 27; + + /* + A list of selected outpoints that are allocated for channel funding. + */ + repeated OutPoint outpoints = 28; +} +message OpenStatusUpdate { + oneof update { + /* + Signals that the channel is now fully negotiated and the funding + transaction published. + */ + PendingUpdate chan_pending = 1; + + /* + Signals that the channel's funding transaction has now reached the + required number of confirmations on chain and can be used. + */ + ChannelOpenUpdate chan_open = 3; + + /* + Signals that the funding process has been suspended and the construction + of a PSBT that funds the channel PK script is now required. + */ + ReadyForPsbtFunding psbt_fund = 5; + } + + /* + The pending channel ID of the created channel. This value may be used to + further the funding flow manually via the FundingStateStep method. + */ + bytes pending_chan_id = 4; +} + +message KeyLocator { + // The family of key being identified. + int32 key_family = 1; + + // The precise index of the key being identified. + int32 key_index = 2; +} + +message KeyDescriptor { + /* + The raw bytes of the key being identified. + */ + bytes raw_key_bytes = 1; + + /* + The key locator that identifies which key to use for signing. + */ + KeyLocator key_loc = 2; +} + +message ChanPointShim { + /* + The size of the pre-crafted output to be used as the channel point for this + channel funding. + */ + int64 amt = 1; + + // The target channel point to refrence in created commitment transactions. + ChannelPoint chan_point = 2; + + // Our local key to use when creating the multi-sig output. + KeyDescriptor local_key = 3; + + // The key of the remote party to use when creating the multi-sig output. + bytes remote_key = 4; + + /* + If non-zero, then this will be used as the pending channel ID on the wire + protocol to initate the funding request. This is an optional field, and + should only be set if the responder is already expecting a specific pending + channel ID. + */ + bytes pending_chan_id = 5; + + /* + This uint32 indicates if this channel is to be considered 'frozen'. A frozen + channel does not allow a cooperative channel close by the initiator. The + thaw_height is the height that this restriction stops applying to the + channel. The height can be interpreted in two ways: as a relative height if + the value is less than 500,000, or as an absolute height otherwise. + */ + uint32 thaw_height = 6; + + /* + Indicates that the funding output is using a MuSig2 multi-sig output. + */ + bool musig2 = 7; +} + +message PsbtShim { + /* + A unique identifier of 32 random bytes that will be used as the pending + channel ID to identify the PSBT state machine when interacting with it and + on the wire protocol to initiate the funding request. + */ + bytes pending_chan_id = 1; + + /* + An optional base PSBT the new channel output will be added to. If this is + non-empty, it must be a binary serialized PSBT. + */ + bytes base_psbt = 2; + + /* + If a channel should be part of a batch (multiple channel openings in one + transaction), it can be dangerous if the whole batch transaction is + published too early before all channel opening negotiations are completed. + This flag prevents this particular channel from broadcasting the transaction + after the negotiation with the remote peer. In a batch of channel openings + this flag should be set to true for every channel but the very last. + */ + bool no_publish = 3; +} + +message FundingShim { + oneof shim { + /* + A channel shim where the channel point was fully constructed outside + of lnd's wallet and the transaction might already be published. + */ + ChanPointShim chan_point_shim = 1; + + /* + A channel shim that uses a PSBT to fund and sign the channel funding + transaction. + */ + PsbtShim psbt_shim = 2; + } +} + +message FundingShimCancel { + // The pending channel ID of the channel to cancel the funding shim for. + bytes pending_chan_id = 1; +} + +message FundingPsbtVerify { + /* + The funded but not yet signed PSBT that sends the exact channel capacity + amount to the PK script returned in the open channel message in a previous + step. + */ + bytes funded_psbt = 1; + + // The pending channel ID of the channel to get the PSBT for. + bytes pending_chan_id = 2; + + /* + Can only be used if the no_publish flag was set to true in the OpenChannel + call meaning that the caller is solely responsible for publishing the final + funding transaction. If skip_finalize is set to true then lnd will not wait + for a FundingPsbtFinalize state step and instead assumes that a transaction + with the same TXID as the passed in PSBT will eventually confirm. + IT IS ABSOLUTELY IMPERATIVE that the TXID of the transaction that is + eventually published does have the _same TXID_ as the verified PSBT. That + means no inputs or outputs can change, only signatures can be added. If the + TXID changes between this call and the publish step then the channel will + never be created and the funds will be in limbo. + */ + bool skip_finalize = 3; +} + +message FundingPsbtFinalize { + /* + The funded PSBT that contains all witness data to send the exact channel + capacity amount to the PK script returned in the open channel message in a + previous step. Cannot be set at the same time as final_raw_tx. + */ + bytes signed_psbt = 1; + + // The pending channel ID of the channel to get the PSBT for. + bytes pending_chan_id = 2; + + /* + As an alternative to the signed PSBT with all witness data, the final raw + wire format transaction can also be specified directly. Cannot be set at the + same time as signed_psbt. + */ + bytes final_raw_tx = 3; +} + +message FundingTransitionMsg { + oneof trigger { + /* + The funding shim to register. This should be used before any + channel funding has began by the remote party, as it is intended as a + preparatory step for the full channel funding. + */ + FundingShim shim_register = 1; + + // Used to cancel an existing registered funding shim. + FundingShimCancel shim_cancel = 2; + + /* + Used to continue a funding flow that was initiated to be executed + through a PSBT. This step verifies that the PSBT contains the correct + outputs to fund the channel. + */ + FundingPsbtVerify psbt_verify = 3; + + /* + Used to continue a funding flow that was initiated to be executed + through a PSBT. This step finalizes the funded and signed PSBT, finishes + negotiation with the peer and finally publishes the resulting funding + transaction. + */ + FundingPsbtFinalize psbt_finalize = 4; + } +} + +message FundingStateStepResp { +} + +message PendingHTLC { + // The direction within the channel that the htlc was sent + bool incoming = 1; + + // The total value of the htlc + int64 amount = 2; + + // The final output to be swept back to the user's wallet + string outpoint = 3; + + // The next block height at which we can spend the current stage + uint32 maturity_height = 4; + + /* + The number of blocks remaining until the current stage can be swept. + Negative values indicate how many blocks have passed since becoming + mature. + */ + int32 blocks_til_maturity = 5; + + // Indicates whether the htlc is in its first or second stage of recovery + uint32 stage = 6; +} + +message PendingChannelsRequest { + // Indicates whether to include the raw transaction hex for + // waiting_close_channels. + bool include_raw_tx = 1; +} +message PendingChannelsResponse { + message PendingChannel { + string remote_node_pub = 1; + string channel_point = 2; + + int64 capacity = 3; + + int64 local_balance = 4; + int64 remote_balance = 5; + + // The minimum satoshis this node is required to reserve in its + // balance. + int64 local_chan_reserve_sat = 6; + + /* + The minimum satoshis the other node is required to reserve in its + balance. + */ + int64 remote_chan_reserve_sat = 7; + + // The party that initiated opening the channel. + Initiator initiator = 8; + + // The commitment type used by this channel. + CommitmentType commitment_type = 9; + + // Total number of forwarding packages created in this channel. + int64 num_forwarding_packages = 10; + + // A set of flags showing the current state of the channel. + string chan_status_flags = 11; + + // Whether this channel is advertised to the network or not. + bool private = 12; + + /* + An optional note-to-self to go along with the channel containing some + useful information. This is only ever stored locally and in no way + impacts the channel's operation. + */ + string memo = 13; + } + + message PendingOpenChannel { + // The pending channel + PendingChannel channel = 1; + + /* + The amount calculated to be paid in fees for the current set of + commitment transactions. The fee amount is persisted with the channel + in order to allow the fee amount to be removed and recalculated with + each channel state update, including updates that happen after a system + restart. + */ + int64 commit_fee = 4; + + // The weight of the commitment transaction + int64 commit_weight = 5; + + /* + The required number of satoshis per kilo-weight that the requester will + pay at all times, for both the funding transaction and commitment + transaction. This value can later be updated once the channel is open. + */ + int64 fee_per_kw = 6; + + // Previously used for confirmation_height. Do not reuse. + reserved 2; + + // The number of blocks until the funding transaction is considered + // expired. If this value gets close to zero, there is a risk that the + // channel funding will be canceled by the channel responder. The + // channel should be fee bumped using CPFP (see walletrpc.BumpFee) to + // ensure that the channel confirms in time. Otherwise a force-close + // will be necessary if the channel confirms after the funding + // transaction expires. A negative value means the channel responder has + // very likely canceled the funding and the channel will never become + // fully operational. + int32 funding_expiry_blocks = 3; + } + + message WaitingCloseChannel { + // The pending channel waiting for closing tx to confirm + PendingChannel channel = 1; + + // The balance in satoshis encumbered in this channel + int64 limbo_balance = 2; + + /* + A list of valid commitment transactions. Any of these can confirm at + this point. + */ + Commitments commitments = 3; + + // The transaction id of the closing transaction + string closing_txid = 4; + + // The raw hex encoded bytes of the closing transaction. Included if + // include_raw_tx in the request is true. + string closing_tx_hex = 5; + } + + message Commitments { + // Hash of the local version of the commitment tx. + string local_txid = 1; + + // Hash of the remote version of the commitment tx. + string remote_txid = 2; + + // Hash of the remote pending version of the commitment tx. + string remote_pending_txid = 3; + + /* + The amount in satoshis calculated to be paid in fees for the local + commitment. + */ + uint64 local_commit_fee_sat = 4; + + /* + The amount in satoshis calculated to be paid in fees for the remote + commitment. + */ + uint64 remote_commit_fee_sat = 5; + + /* + The amount in satoshis calculated to be paid in fees for the remote + pending commitment. + */ + uint64 remote_pending_commit_fee_sat = 6; + } + + message ClosedChannel { + // The pending channel to be closed + PendingChannel channel = 1; + + // The transaction id of the closing transaction + string closing_txid = 2; + } + + message ForceClosedChannel { + // The pending channel to be force closed + PendingChannel channel = 1; + + // The transaction id of the closing transaction + string closing_txid = 2; + + // The balance in satoshis encumbered in this pending channel + int64 limbo_balance = 3; + + // The height at which funds can be swept into the wallet + uint32 maturity_height = 4; + + /* + Remaining # of blocks until the commitment output can be swept. + Negative values indicate how many blocks have passed since becoming + mature. + */ + int32 blocks_til_maturity = 5; + + // The total value of funds successfully recovered from this channel + int64 recovered_balance = 6; + + repeated PendingHTLC pending_htlcs = 8; + + /* + There are three resolution states for the anchor: + limbo, lost and recovered. Derive the current state + from the limbo and recovered balances. + */ + enum AnchorState { + // The recovered_balance is zero and limbo_balance is non-zero. + LIMBO = 0; + // The recovered_balance is non-zero. + RECOVERED = 1; + // A state that is neither LIMBO nor RECOVERED. + LOST = 2; + } + + AnchorState anchor = 9; + } + + // The balance in satoshis encumbered in pending channels + int64 total_limbo_balance = 1; + + // Channels pending opening + repeated PendingOpenChannel pending_open_channels = 2; + + /* + Deprecated: Channels pending closing previously contained cooperatively + closed channels with a single confirmation. These channels are now + considered closed from the time we see them on chain. + */ + repeated ClosedChannel pending_closing_channels = 3 [deprecated = true]; + + // Channels pending force closing + repeated ForceClosedChannel pending_force_closing_channels = 4; + + // Channels waiting for closing tx to confirm + repeated WaitingCloseChannel waiting_close_channels = 5; +} + +message ChannelEventSubscription { +} + +message ChannelEventUpdate { + oneof channel { + Channel open_channel = 1; + ChannelCloseSummary closed_channel = 2; + ChannelPoint active_channel = 3; + ChannelPoint inactive_channel = 4; + PendingUpdate pending_open_channel = 6; + ChannelPoint fully_resolved_channel = 7; + } + + enum UpdateType { + OPEN_CHANNEL = 0; + CLOSED_CHANNEL = 1; + ACTIVE_CHANNEL = 2; + INACTIVE_CHANNEL = 3; + PENDING_OPEN_CHANNEL = 4; + FULLY_RESOLVED_CHANNEL = 5; + } + + UpdateType type = 5; +} + +message WalletAccountBalance { + // The confirmed balance of the account (with >= 1 confirmations). + int64 confirmed_balance = 1; + + // The unconfirmed balance of the account (with 0 confirmations). + int64 unconfirmed_balance = 2; +} + +message WalletBalanceRequest { + // The wallet account the balance is shown for. + // If this is not specified, the balance of the "default" account is shown. + string account = 1; + + // The minimum number of confirmations each one of your outputs used for the + // funding transaction must satisfy. If this is not specified, the default + // value of 1 is used. + int32 min_confs = 2; +} + +message WalletBalanceResponse { + // The balance of the wallet + int64 total_balance = 1; + + // The confirmed balance of a wallet(with >= 1 confirmations) + int64 confirmed_balance = 2; + + // The unconfirmed balance of a wallet(with 0 confirmations) + int64 unconfirmed_balance = 3; + + // The total amount of wallet UTXOs held in outputs that are locked for + // other usage. + int64 locked_balance = 5; + + // The amount of reserve required. + int64 reserved_balance_anchor_chan = 6; + + // A mapping of each wallet account's name to its balance. + map account_balance = 4; +} + +message Amount { + // Value denominated in satoshis. + uint64 sat = 1; + + // Value denominated in milli-satoshis. + uint64 msat = 2; +} + +message ChannelBalanceRequest { +} +message ChannelBalanceResponse { + // Deprecated. Sum of channels balances denominated in satoshis + int64 balance = 1 [deprecated = true]; + + // Deprecated. Sum of channels pending balances denominated in satoshis + int64 pending_open_balance = 2 [deprecated = true]; + + // Sum of channels local balances. + Amount local_balance = 3; + + // Sum of channels remote balances. + Amount remote_balance = 4; + + // Sum of channels local unsettled balances. + Amount unsettled_local_balance = 5; + + // Sum of channels remote unsettled balances. + Amount unsettled_remote_balance = 6; + + // Sum of channels pending local balances. + Amount pending_open_local_balance = 7; + + // Sum of channels pending remote balances. + Amount pending_open_remote_balance = 8; +} + +message QueryRoutesRequest { + // The 33-byte hex-encoded public key for the payment destination + string pub_key = 1; + + /* + The amount to send expressed in satoshis. + + The fields amt and amt_msat are mutually exclusive. + */ + int64 amt = 2; + + /* + The amount to send expressed in millisatoshis. + + The fields amt and amt_msat are mutually exclusive. + */ + int64 amt_msat = 12; + + reserved 3; + + /* + An optional CLTV delta from the current height that should be used for the + timelock of the final hop. Note that unlike SendPayment, QueryRoutes does + not add any additional block padding on top of final_ctlv_delta. This + padding of a few blocks needs to be added manually or otherwise failures may + happen when a block comes in while the payment is in flight. + + Note: must not be set if making a payment to a blinded path (delta is + set by the aggregate parameters provided by blinded_payment_paths) + */ + int32 final_cltv_delta = 4; + + /* + The maximum number of satoshis that will be paid as a fee of the payment. + This value can be represented either as a percentage of the amount being + sent, or as a fixed amount of the maximum fee the user is willing the pay to + send the payment. If not specified, lnd will use a default value of 100% + fees for small amounts (<=1k sat) or 5% fees for larger amounts. + */ + FeeLimit fee_limit = 5; + + /* + A list of nodes to ignore during path finding. When using REST, these fields + must be encoded as base64. + */ + repeated bytes ignored_nodes = 6; + + /* + Deprecated. A list of edges to ignore during path finding. + */ + repeated EdgeLocator ignored_edges = 7 [deprecated = true]; + + /* + The source node where the request route should originated from. If empty, + self is assumed. + */ + string source_pub_key = 8; + + /* + If set to true, edge probabilities from mission control will be used to get + the optimal route. + */ + bool use_mission_control = 9; + + /* + A list of directed node pairs that will be ignored during path finding. + */ + repeated NodePair ignored_pairs = 10; + + /* + An optional maximum total time lock for the route. If the source is empty or + ourselves, this should not exceed lnd's `--max-cltv-expiry` setting. If + zero, then the value of `--max-cltv-expiry` is used as the limit. + */ + uint32 cltv_limit = 11; + + /* + An optional field that can be used to pass an arbitrary set of TLV records + to a peer which understands the new records. This can be used to pass + application specific data during the payment attempt. If the destination + does not support the specified records, an error will be returned. + Record types are required to be in the custom range >= 65536. When using + REST, the values must be encoded as base64. + */ + map dest_custom_records = 13; + + /* + The channel id of the channel that must be taken to the first hop. If zero, + any channel may be used. + */ + uint64 outgoing_chan_id = 14 [jstype = JS_STRING]; + + /* + The pubkey of the last hop of the route. If empty, any hop may be used. + */ + bytes last_hop_pubkey = 15; + + /* + Optional route hints to reach the destination through private channels. + */ + repeated lnrpc.RouteHint route_hints = 16; + + /* + An optional blinded path(s) to reach the destination. Note that the + introduction node must be provided as the first hop in the route. + */ + repeated BlindedPaymentPath blinded_payment_paths = 19; + + /* + Features assumed to be supported by the final node. All transitive feature + dependencies must also be set properly. For a given feature bit pair, either + optional or remote may be set, but not both. If this field is nil or empty, + the router will try to load destination features from the graph as a + fallback. + + Note: must not be set if making a payment to a blinded route (features + are provided in blinded_payment_paths). + */ + repeated lnrpc.FeatureBit dest_features = 17; + + /* + The time preference for this payment. Set to -1 to optimize for fees + only, to 1 to optimize for reliability only or a value inbetween for a mix. + */ + double time_pref = 18; +} + +message NodePair { + /* + The sending node of the pair. When using REST, this field must be encoded as + base64. + */ + bytes from = 1; + + /* + The receiving node of the pair. When using REST, this field must be encoded + as base64. + */ + bytes to = 2; +} + +message EdgeLocator { + // The short channel id of this edge. + uint64 channel_id = 1 [jstype = JS_STRING]; + + /* + The direction of this edge. If direction_reverse is false, the direction + of this edge is from the channel endpoint with the lexicographically smaller + pub key to the endpoint with the larger pub key. If direction_reverse is + is true, the edge goes the other way. + */ + bool direction_reverse = 2; +} + +message QueryRoutesResponse { + /* + The route that results from the path finding operation. This is still a + repeated field to retain backwards compatibility. + */ + repeated Route routes = 1; + + /* + The success probability of the returned route based on the current mission + control state. [EXPERIMENTAL] + */ + double success_prob = 2; +} + +message Hop { + /* + The unique channel ID for the channel. The first 3 bytes are the block + height, the next 3 the index within the block, and the last 2 bytes are the + output index for the channel. + */ + uint64 chan_id = 1 [jstype = JS_STRING]; + int64 chan_capacity = 2 [deprecated = true]; + int64 amt_to_forward = 3 [deprecated = true]; + int64 fee = 4 [deprecated = true]; + uint32 expiry = 5; + int64 amt_to_forward_msat = 6; + int64 fee_msat = 7; + + /* + An optional public key of the hop. If the public key is given, the payment + can be executed without relying on a copy of the channel graph. + */ + string pub_key = 8; + + /* + If set to true, then this hop will be encoded using the new variable length + TLV format. Note that if any custom tlv_records below are specified, then + this field MUST be set to true for them to be encoded properly. + */ + bool tlv_payload = 9 [deprecated = true]; + + /* + An optional TLV record that signals the use of an MPP payment. If present, + the receiver will enforce that the same mpp_record is included in the final + hop payload of all non-zero payments in the HTLC set. If empty, a regular + single-shot payment is or was attempted. + */ + MPPRecord mpp_record = 10; + + /* + An optional TLV record that signals the use of an AMP payment. If present, + the receiver will treat all received payments including the same + (payment_addr, set_id) pair as being part of one logical payment. The + payment will be settled by XORing the root_share's together and deriving the + child hashes and preimages according to BOLT XX. Must be used in conjunction + with mpp_record. + */ + AMPRecord amp_record = 12; + + /* + An optional set of key-value TLV records. This is useful within the context + of the SendToRoute call as it allows callers to specify arbitrary K-V pairs + to drop off at each hop within the onion. + */ + map custom_records = 11; + + // The payment metadata to send along with the payment to the payee. + bytes metadata = 13; + + /* + Blinding point is an optional blinding point included for introduction + nodes in blinded paths. This field is mandatory for hops that represents + the introduction point in a blinded path. + */ + bytes blinding_point = 14; + + /* + Encrypted data is a receiver-produced blob of data that provides hops + in a blinded route with forwarding data. As this data is encrypted by + the recipient, we will not be able to parse it - it is essentially an + arbitrary blob of data from our node's perspective. This field is + mandatory for all hops in a blinded path, including the introduction + node. + */ + bytes encrypted_data = 15; + + /* + The total amount that is sent to the recipient (possibly across multiple + HTLCs), as specified by the sender when making a payment to a blinded path. + This value is only set in the final hop payload of a blinded payment. This + value is analogous to the MPPRecord that is used for regular (non-blinded) + MPP payments. + */ + uint64 total_amt_msat = 16; +} + +message MPPRecord { + /* + A unique, random identifier used to authenticate the sender as the intended + payer of a multi-path payment. The payment_addr must be the same for all + subpayments, and match the payment_addr provided in the receiver's invoice. + The same payment_addr must be used on all subpayments. This is also called + payment secret in specifications (e.g. BOLT 11). + */ + bytes payment_addr = 11; + + /* + The total amount in milli-satoshis being sent as part of a larger multi-path + payment. The caller is responsible for ensuring subpayments to the same node + and payment_hash sum exactly to total_amt_msat. The same + total_amt_msat must be used on all subpayments. + */ + int64 total_amt_msat = 10; +} + +message AMPRecord { + bytes root_share = 1; + + bytes set_id = 2; + + uint32 child_index = 3; +} + +/* +A path through the channel graph which runs over one or more channels in +succession. This struct carries all the information required to craft the +Sphinx onion packet, and send the payment along the first hop in the path. A +route is only selected as valid if all the channels have sufficient capacity to +carry the initial payment amount after fees are accounted for. +*/ +message Route { + /* + The cumulative (final) time lock across the entire route. This is the CLTV + value that should be extended to the first hop in the route. All other hops + will decrement the time-lock as advertised, leaving enough time for all + hops to wait for or present the payment preimage to complete the payment. + */ + uint32 total_time_lock = 1; + + /* + The sum of the fees paid at each hop within the final route. In the case + of a one-hop payment, this value will be zero as we don't need to pay a fee + to ourselves. + */ + int64 total_fees = 2 [deprecated = true]; + + /* + The total amount of funds required to complete a payment over this route. + This value includes the cumulative fees at each hop. As a result, the HTLC + extended to the first-hop in the route will need to have at least this many + satoshis, otherwise the route will fail at an intermediate node due to an + insufficient amount of fees. + */ + int64 total_amt = 3 [deprecated = true]; + + /* + Contains details concerning the specific forwarding details at each hop. + */ + repeated Hop hops = 4; + + /* + The total fees in millisatoshis. + */ + int64 total_fees_msat = 5; + + /* + The total amount in millisatoshis. + */ + int64 total_amt_msat = 6; +} + +message NodeInfoRequest { + // The 33-byte hex-encoded compressed public of the target node + string pub_key = 1; + + // If true, will include all known channels associated with the node. + bool include_channels = 2; +} + +message NodeInfo { + /* + An individual vertex/node within the channel graph. A node is + connected to other nodes by one or more channel edges emanating from it. As + the graph is directed, a node will also have an incoming edge attached to + it for each outgoing edge. + */ + LightningNode node = 1; + + // The total number of channels for the node. + uint32 num_channels = 2; + + // The sum of all channels capacity for the node, denominated in satoshis. + int64 total_capacity = 3; + + // A list of all public channels for the node. + repeated ChannelEdge channels = 4; +} + +/* +An individual vertex/node within the channel graph. A node is +connected to other nodes by one or more channel edges emanating from it. As the +graph is directed, a node will also have an incoming edge attached to it for +each outgoing edge. +*/ +message LightningNode { + uint32 last_update = 1; + string pub_key = 2; + string alias = 3; + repeated NodeAddress addresses = 4; + string color = 5; + map features = 6; + + // Custom node announcement tlv records. + map custom_records = 7; +} + +message NodeAddress { + string network = 1; + string addr = 2; +} + +message RoutingPolicy { + uint32 time_lock_delta = 1; + int64 min_htlc = 2; + int64 fee_base_msat = 3; + int64 fee_rate_milli_msat = 4; + bool disabled = 5; + uint64 max_htlc_msat = 6; + uint32 last_update = 7; + + // Custom channel update tlv records. + map custom_records = 8; + + int32 inbound_fee_base_msat = 9; + int32 inbound_fee_rate_milli_msat = 10; +} + +/* +A fully authenticated channel along with all its unique attributes. +Once an authenticated channel announcement has been processed on the network, +then an instance of ChannelEdgeInfo encapsulating the channels attributes is +stored. The other portions relevant to routing policy of a channel are stored +within a ChannelEdgePolicy for each direction of the channel. +*/ +message ChannelEdge { + /* + The unique channel ID for the channel. The first 3 bytes are the block + height, the next 3 the index within the block, and the last 2 bytes are the + output index for the channel. + */ + uint64 channel_id = 1 [jstype = JS_STRING]; + string chan_point = 2; + + uint32 last_update = 3 [deprecated = true]; + + string node1_pub = 4; + string node2_pub = 5; + + int64 capacity = 6; + + RoutingPolicy node1_policy = 7; + RoutingPolicy node2_policy = 8; + + // Custom channel announcement tlv records. + map custom_records = 9; +} + +message ChannelGraphRequest { + /* + Whether unannounced channels are included in the response or not. If set, + unannounced channels are included. Unannounced channels are both private + channels, and public channels that are not yet announced to the network. + */ + bool include_unannounced = 1; +} + +// Returns a new instance of the directed channel graph. +message ChannelGraph { + // The list of `LightningNode`s in this channel graph + repeated LightningNode nodes = 1; + + // The list of `ChannelEdge`s in this channel graph + repeated ChannelEdge edges = 2; +} + +enum NodeMetricType { + UNKNOWN = 0; + BETWEENNESS_CENTRALITY = 1; +} + +message NodeMetricsRequest { + // The requested node metrics. + repeated NodeMetricType types = 1; +} + +message NodeMetricsResponse { + /* + Betweenness centrality is the sum of the ratio of shortest paths that pass + through the node for each pair of nodes in the graph (not counting paths + starting or ending at this node). + Map of node pubkey to betweenness centrality of the node. Normalized + values are in the [0,1] closed interval. + */ + map betweenness_centrality = 1; +} + +message FloatMetric { + // Arbitrary float value. + double value = 1; + + // The value normalized to [0,1] or [-1,1]. + double normalized_value = 2; +} + +message ChanInfoRequest { + /* + The unique channel ID for the channel. The first 3 bytes are the block + height, the next 3 the index within the block, and the last 2 bytes are the + output index for the channel. + */ + uint64 chan_id = 1 [jstype = JS_STRING]; +} + +message NetworkInfoRequest { +} +message NetworkInfo { + uint32 graph_diameter = 1; + double avg_out_degree = 2; + uint32 max_out_degree = 3; + + uint32 num_nodes = 4; + uint32 num_channels = 5; + + int64 total_network_capacity = 6; + + double avg_channel_size = 7; + int64 min_channel_size = 8; + int64 max_channel_size = 9; + int64 median_channel_size_sat = 10; + + // The number of edges marked as zombies. + uint64 num_zombie_chans = 11; + + // TODO(roasbeef): fee rate info, expiry + // * also additional RPC for tracking fee info once in +} + +message StopRequest { +} +message StopResponse { +} + +message GraphTopologySubscription { +} +message GraphTopologyUpdate { + repeated NodeUpdate node_updates = 1; + repeated ChannelEdgeUpdate channel_updates = 2; + repeated ClosedChannelUpdate closed_chans = 3; +} +message NodeUpdate { + /* + Deprecated, use node_addresses. + */ + repeated string addresses = 1 [deprecated = true]; + + string identity_key = 2; + + /* + Deprecated, use features. + */ + bytes global_features = 3 [deprecated = true]; + + string alias = 4; + string color = 5; + repeated NodeAddress node_addresses = 7; + + /* + Features that the node has advertised in the init message, node + announcements and invoices. + */ + map features = 6; +} +message ChannelEdgeUpdate { + /* + The unique channel ID for the channel. The first 3 bytes are the block + height, the next 3 the index within the block, and the last 2 bytes are the + output index for the channel. + */ + uint64 chan_id = 1 [jstype = JS_STRING]; + + ChannelPoint chan_point = 2; + + int64 capacity = 3; + + RoutingPolicy routing_policy = 4; + + string advertising_node = 5; + string connecting_node = 6; +} +message ClosedChannelUpdate { + /* + The unique channel ID for the channel. The first 3 bytes are the block + height, the next 3 the index within the block, and the last 2 bytes are the + output index for the channel. + */ + uint64 chan_id = 1 [jstype = JS_STRING]; + int64 capacity = 2; + uint32 closed_height = 3; + ChannelPoint chan_point = 4; +} + +message HopHint { + // The public key of the node at the start of the channel. + string node_id = 1; + + // The unique identifier of the channel. + uint64 chan_id = 2 [jstype = JS_STRING]; + + // The base fee of the channel denominated in millisatoshis. + uint32 fee_base_msat = 3; + + /* + The fee rate of the channel for sending one satoshi across it denominated in + millionths of a satoshi. + */ + uint32 fee_proportional_millionths = 4; + + // The time-lock delta of the channel. + uint32 cltv_expiry_delta = 5; +} + +message SetID { + bytes set_id = 1; +} + +message RouteHint { + /* + A list of hop hints that when chained together can assist in reaching a + specific destination. + */ + repeated HopHint hop_hints = 1; +} + +message BlindedPaymentPath { + // The blinded path to send the payment to. + BlindedPath blinded_path = 1; + + // The base fee for the blinded path provided, expressed in msat. + uint64 base_fee_msat = 2; + + /* + The proportional fee for the blinded path provided, expressed in parts + per million. + */ + uint32 proportional_fee_rate = 3; + + /* + The total CLTV delta for the blinded path provided, including the + final CLTV delta for the receiving node. + */ + uint32 total_cltv_delta = 4; + + /* + The minimum hltc size that may be sent over the blinded path, expressed + in msat. + */ + uint64 htlc_min_msat = 5; + + /* + The maximum htlc size that may be sent over the blinded path, expressed + in msat. + */ + uint64 htlc_max_msat = 6; + + // The feature bits for the route. + repeated FeatureBit features = 7; +} + +message BlindedPath { + // The unblinded pubkey of the introduction node for the route. + bytes introduction_node = 1; + + // The ephemeral pubkey used by nodes in the blinded route. + bytes blinding_point = 2; + + /* + A set of blinded node keys and data blobs for the blinded portion of the + route. Note that the first hop is expected to be the introduction node, + so the route is always expected to have at least one hop. + */ + repeated BlindedHop blinded_hops = 3; +} + +message BlindedHop { + // The blinded public key of the node. + bytes blinded_node = 1; + + // An encrypted blob of data provided to the blinded node. + bytes encrypted_data = 2; +} + +message AMPInvoiceState { + // The state the HTLCs associated with this setID are in. + InvoiceHTLCState state = 1; + + // The settle index of this HTLC set, if the invoice state is settled. + uint64 settle_index = 2; + + // The time this HTLC set was settled expressed in unix epoch. + int64 settle_time = 3; + + // The total amount paid for the sub-invoice expressed in milli satoshis. + int64 amt_paid_msat = 5; +} + +message Invoice { + /* + An optional memo to attach along with the invoice. Used for record keeping + purposes for the invoice's creator, and will also be set in the description + field of the encoded payment request if the description_hash field is not + being used. + */ + string memo = 1; + + reserved 2; + + /* + The hex-encoded preimage (32 byte) which will allow settling an incoming + HTLC payable to this preimage. When using REST, this field must be encoded + as base64. + */ + bytes r_preimage = 3; + + /* + The hash of the preimage. When using REST, this field must be encoded as + base64. + Note: Output only, don't specify for creating an invoice. + */ + bytes r_hash = 4; + + /* + The value of this invoice in satoshis + + The fields value and value_msat are mutually exclusive. + */ + int64 value = 5; + + /* + The value of this invoice in millisatoshis + + The fields value and value_msat are mutually exclusive. + */ + int64 value_msat = 23; + + /* + Whether this invoice has been fulfilled. + + The field is deprecated. Use the state field instead (compare to SETTLED). + */ + bool settled = 6 [deprecated = true]; + + /* + When this invoice was created. + Measured in seconds since the unix epoch. + Note: Output only, don't specify for creating an invoice. + */ + int64 creation_date = 7; + + /* + When this invoice was settled. + Measured in seconds since the unix epoch. + Note: Output only, don't specify for creating an invoice. + */ + int64 settle_date = 8; + + /* + A bare-bones invoice for a payment within the Lightning Network. With the + details of the invoice, the sender has all the data necessary to send a + payment to the recipient. + Note: Output only, don't specify for creating an invoice. + */ + string payment_request = 9; + + /* + Hash (SHA-256) of a description of the payment. Used if the description of + payment (memo) is too long to naturally fit within the description field + of an encoded payment request. When using REST, this field must be encoded + as base64. + */ + bytes description_hash = 10; + + // Payment request expiry time in seconds. Default is 86400 (24 hours). + int64 expiry = 11; + + // Fallback on-chain address. + string fallback_addr = 12; + + // Delta to use for the time-lock of the CLTV extended to the final hop. + uint64 cltv_expiry = 13; + + /* + Route hints that can each be individually used to assist in reaching the + invoice's destination. + */ + repeated RouteHint route_hints = 14; + + // Whether this invoice should include routing hints for private channels. + // Note: When enabled, if value and value_msat are zero, a large number of + // hints with these channels can be included, which might not be desirable. + bool private = 15; + + /* + The "add" index of this invoice. Each newly created invoice will increment + this index making it monotonically increasing. Callers to the + SubscribeInvoices call can use this to instantly get notified of all added + invoices with an add_index greater than this one. + Note: Output only, don't specify for creating an invoice. + */ + uint64 add_index = 16; + + /* + The "settle" index of this invoice. Each newly settled invoice will + increment this index making it monotonically increasing. Callers to the + SubscribeInvoices call can use this to instantly get notified of all + settled invoices with an settle_index greater than this one. + Note: Output only, don't specify for creating an invoice. + */ + uint64 settle_index = 17; + + // Deprecated, use amt_paid_sat or amt_paid_msat. + int64 amt_paid = 18 [deprecated = true]; + + /* + The amount that was accepted for this invoice, in satoshis. This will ONLY + be set if this invoice has been settled or accepted. We provide this field + as if the invoice was created with a zero value, then we need to record what + amount was ultimately accepted. Additionally, it's possible that the sender + paid MORE that was specified in the original invoice. So we'll record that + here as well. + Note: Output only, don't specify for creating an invoice. + */ + int64 amt_paid_sat = 19; + + /* + The amount that was accepted for this invoice, in millisatoshis. This will + ONLY be set if this invoice has been settled or accepted. We provide this + field as if the invoice was created with a zero value, then we need to + record what amount was ultimately accepted. Additionally, it's possible that + the sender paid MORE that was specified in the original invoice. So we'll + record that here as well. + Note: Output only, don't specify for creating an invoice. + */ + int64 amt_paid_msat = 20; + + enum InvoiceState { + OPEN = 0; + SETTLED = 1; + CANCELED = 2; + ACCEPTED = 3; + } + + /* + The state the invoice is in. + Note: Output only, don't specify for creating an invoice. + */ + InvoiceState state = 21; + + /* + List of HTLCs paying to this invoice [EXPERIMENTAL]. + Note: Output only, don't specify for creating an invoice. + */ + repeated InvoiceHTLC htlcs = 22; + + /* + List of features advertised on the invoice. + Note: Output only, don't specify for creating an invoice. + */ + map features = 24; + + /* + Indicates if this invoice was a spontaneous payment that arrived via keysend + [EXPERIMENTAL]. + Note: Output only, don't specify for creating an invoice. + */ + bool is_keysend = 25; + + /* + The payment address of this invoice. This is also called payment secret in + specifications (e.g. BOLT 11). This value will be used in MPP payments, and + also for newer invoices that always require the MPP payload for added + end-to-end security. + Note: Output only, don't specify for creating an invoice. + */ + bytes payment_addr = 26; + + /* + Signals whether or not this is an AMP invoice. + */ + bool is_amp = 27; + + /* + [EXPERIMENTAL]: + + Maps a 32-byte hex-encoded set ID to the sub-invoice AMP state for the + given set ID. This field is always populated for AMP invoices, and can be + used along side LookupInvoice to obtain the HTLC information related to a + given sub-invoice. + Note: Output only, don't specify for creating an invoice. + */ + map amp_invoice_state = 28; +} + +enum InvoiceHTLCState { + ACCEPTED = 0; + SETTLED = 1; + CANCELED = 2; +} + +// Details of an HTLC that paid to an invoice +message InvoiceHTLC { + // Short channel id over which the htlc was received. + uint64 chan_id = 1 [jstype = JS_STRING]; + + // Index identifying the htlc on the channel. + uint64 htlc_index = 2; + + // The amount of the htlc in msat. + uint64 amt_msat = 3; + + // Block height at which this htlc was accepted. + int32 accept_height = 4; + + // Time at which this htlc was accepted. + int64 accept_time = 5; + + // Time at which this htlc was settled or canceled. + int64 resolve_time = 6; + + // Block height at which this htlc expires. + int32 expiry_height = 7; + + // Current state the htlc is in. + InvoiceHTLCState state = 8; + + // Custom tlv records. + map custom_records = 9; + + // The total amount of the mpp payment in msat. + uint64 mpp_total_amt_msat = 10; + + // Details relevant to AMP HTLCs, only populated if this is an AMP HTLC. + AMP amp = 11; +} + +// Details specific to AMP HTLCs. +message AMP { + // An n-of-n secret share of the root seed from which child payment hashes + // and preimages are derived. + bytes root_share = 1; + + // An identifier for the HTLC set that this HTLC belongs to. + bytes set_id = 2; + + // A nonce used to randomize the child preimage and child hash from a given + // root_share. + uint32 child_index = 3; + + // The payment hash of the AMP HTLC. + bytes hash = 4; + + // The preimage used to settle this AMP htlc. This field will only be + // populated if the invoice is in InvoiceState_ACCEPTED or + // InvoiceState_SETTLED. + bytes preimage = 5; +} + +message AddInvoiceResponse { + bytes r_hash = 1; + + /* + A bare-bones invoice for a payment within the Lightning Network. With the + details of the invoice, the sender has all the data necessary to send a + payment to the recipient. + */ + string payment_request = 2; + + /* + The "add" index of this invoice. Each newly created invoice will increment + this index making it monotonically increasing. Callers to the + SubscribeInvoices call can use this to instantly get notified of all added + invoices with an add_index greater than this one. + */ + uint64 add_index = 16; + + /* + The payment address of the generated invoice. This is also called + payment secret in specifications (e.g. BOLT 11). This value should be used + in all payments for this invoice as we require it for end to end security. + */ + bytes payment_addr = 17; +} +message PaymentHash { + /* + The hex-encoded payment hash of the invoice to be looked up. The passed + payment hash must be exactly 32 bytes, otherwise an error is returned. + Deprecated now that the REST gateway supports base64 encoding of bytes + fields. + */ + string r_hash_str = 1 [deprecated = true]; + + /* + The payment hash of the invoice to be looked up. When using REST, this field + must be encoded as base64. + */ + bytes r_hash = 2; +} + +message ListInvoiceRequest { + /* + If set, only invoices that are not settled and not canceled will be returned + in the response. + */ + bool pending_only = 1; + + /* + The index of an invoice that will be used as either the start or end of a + query to determine which invoices should be returned in the response. + */ + uint64 index_offset = 4; + + // The max number of invoices to return in the response to this query. + uint64 num_max_invoices = 5; + + /* + If set, the invoices returned will result from seeking backwards from the + specified index offset. This can be used to paginate backwards. + */ + bool reversed = 6; + + // If set, returns all invoices with a creation date greater than or equal + // to it. Measured in seconds since the unix epoch. + uint64 creation_date_start = 7; + + // If set, returns all invoices with a creation date less than or equal to + // it. Measured in seconds since the unix epoch. + uint64 creation_date_end = 8; +} + +message ListInvoiceResponse { + /* + A list of invoices from the time slice of the time series specified in the + request. + */ + repeated Invoice invoices = 1; + + /* + The index of the last item in the set of returned invoices. This can be used + to seek further, pagination style. + */ + uint64 last_index_offset = 2; + + /* + The index of the last item in the set of returned invoices. This can be used + to seek backwards, pagination style. + */ + uint64 first_index_offset = 3; +} + +message InvoiceSubscription { + /* + If specified (non-zero), then we'll first start by sending out + notifications for all added indexes with an add_index greater than this + value. This allows callers to catch up on any events they missed while they + weren't connected to the streaming RPC. + */ + uint64 add_index = 1; + + /* + If specified (non-zero), then we'll first start by sending out + notifications for all settled indexes with an settle_index greater than + this value. This allows callers to catch up on any events they missed while + they weren't connected to the streaming RPC. + */ + uint64 settle_index = 2; +} + +enum PaymentFailureReason { + /* + Payment isn't failed (yet). + */ + FAILURE_REASON_NONE = 0; + + /* + There are more routes to try, but the payment timeout was exceeded. + */ + FAILURE_REASON_TIMEOUT = 1; + + /* + All possible routes were tried and failed permanently. Or were no + routes to the destination at all. + */ + FAILURE_REASON_NO_ROUTE = 2; + + /* + A non-recoverable error has occured. + */ + FAILURE_REASON_ERROR = 3; + + /* + Payment details incorrect (unknown hash, invalid amt or + invalid final cltv delta) + */ + FAILURE_REASON_INCORRECT_PAYMENT_DETAILS = 4; + + /* + Insufficient local balance. + */ + FAILURE_REASON_INSUFFICIENT_BALANCE = 5; +} + +message Payment { + // The payment hash + string payment_hash = 1; + + // Deprecated, use value_sat or value_msat. + int64 value = 2 [deprecated = true]; + + // Deprecated, use creation_time_ns + int64 creation_date = 3 [deprecated = true]; + + reserved 4; + + // Deprecated, use fee_sat or fee_msat. + int64 fee = 5 [deprecated = true]; + + // The payment preimage + string payment_preimage = 6; + + // The value of the payment in satoshis + int64 value_sat = 7; + + // The value of the payment in milli-satoshis + int64 value_msat = 8; + + // The optional payment request being fulfilled. + string payment_request = 9; + + enum PaymentStatus { + // Deprecated. This status will never be returned. + UNKNOWN = 0 [deprecated = true]; + + // Payment has inflight HTLCs. + IN_FLIGHT = 1; + + // Payment is settled. + SUCCEEDED = 2; + + // Payment is failed. + FAILED = 3; + + // Payment is created and has not attempted any HTLCs. + INITIATED = 4; + } + + // The status of the payment. + PaymentStatus status = 10; + + // The fee paid for this payment in satoshis + int64 fee_sat = 11; + + // The fee paid for this payment in milli-satoshis + int64 fee_msat = 12; + + // The time in UNIX nanoseconds at which the payment was created. + int64 creation_time_ns = 13; + + // The HTLCs made in attempt to settle the payment. + repeated HTLCAttempt htlcs = 14; + + /* + The creation index of this payment. Each payment can be uniquely identified + by this index, which may not strictly increment by 1 for payments made in + older versions of lnd. + */ + uint64 payment_index = 15; + + PaymentFailureReason failure_reason = 16; +} + +message HTLCAttempt { + // The unique ID that is used for this attempt. + uint64 attempt_id = 7; + + enum HTLCStatus { + IN_FLIGHT = 0; + SUCCEEDED = 1; + FAILED = 2; + } + + // The status of the HTLC. + HTLCStatus status = 1; + + // The route taken by this HTLC. + Route route = 2; + + // The time in UNIX nanoseconds at which this HTLC was sent. + int64 attempt_time_ns = 3; + + /* + The time in UNIX nanoseconds at which this HTLC was settled or failed. + This value will not be set if the HTLC is still IN_FLIGHT. + */ + int64 resolve_time_ns = 4; + + // Detailed htlc failure info. + Failure failure = 5; + + // The preimage that was used to settle the HTLC. + bytes preimage = 6; +} + +message ListPaymentsRequest { + /* + If true, then return payments that have not yet fully completed. This means + that pending payments, as well as failed payments will show up if this + field is set to true. This flag doesn't change the meaning of the indices, + which are tied to individual payments. + */ + bool include_incomplete = 1; + + /* + The index of a payment that will be used as either the start or end of a + query to determine which payments should be returned in the response. The + index_offset is exclusive. In the case of a zero index_offset, the query + will start with the oldest payment when paginating forwards, or will end + with the most recent payment when paginating backwards. + */ + uint64 index_offset = 2; + + // The maximal number of payments returned in the response to this query. + uint64 max_payments = 3; + + /* + If set, the payments returned will result from seeking backwards from the + specified index offset. This can be used to paginate backwards. The order + of the returned payments is always oldest first (ascending index order). + */ + bool reversed = 4; + + /* + If set, all payments (complete and incomplete, independent of the + max_payments parameter) will be counted. Note that setting this to true will + increase the run time of the call significantly on systems that have a lot + of payments, as all of them have to be iterated through to be counted. + */ + bool count_total_payments = 5; + + // If set, returns all payments with a creation date greater than or equal + // to it. Measured in seconds since the unix epoch. + uint64 creation_date_start = 6; + + // If set, returns all payments with a creation date less than or equal to + // it. Measured in seconds since the unix epoch. + uint64 creation_date_end = 7; +} + +message ListPaymentsResponse { + // The list of payments + repeated Payment payments = 1; + + /* + The index of the first item in the set of returned payments. This can be + used as the index_offset to continue seeking backwards in the next request. + */ + uint64 first_index_offset = 2; + + /* + The index of the last item in the set of returned payments. This can be used + as the index_offset to continue seeking forwards in the next request. + */ + uint64 last_index_offset = 3; + + /* + Will only be set if count_total_payments in the request was set. Represents + the total number of payments (complete and incomplete, independent of the + number of payments requested in the query) currently present in the payments + database. + */ + uint64 total_num_payments = 4; +} + +message DeletePaymentRequest { + // Payment hash to delete. + bytes payment_hash = 1; + + /* + Only delete failed HTLCs from the payment, not the payment itself. + */ + bool failed_htlcs_only = 2; +} + +message DeleteAllPaymentsRequest { + // Only delete failed payments. + bool failed_payments_only = 1; + + /* + Only delete failed HTLCs from payments, not the payment itself. + */ + bool failed_htlcs_only = 2; + + // Delete all payments. NOTE: Using this option requires careful + // consideration as it is a destructive operation. + bool all_payments = 3; +} + +message DeletePaymentResponse { +} + +message DeleteAllPaymentsResponse { +} + +message AbandonChannelRequest { + ChannelPoint channel_point = 1; + + bool pending_funding_shim_only = 2; + + /* + Override the requirement for being in dev mode by setting this to true and + confirming the user knows what they are doing and this is a potential foot + gun to lose funds if used on active channels. + */ + bool i_know_what_i_am_doing = 3; +} + +message AbandonChannelResponse { +} + +message DebugLevelRequest { + bool show = 1; + string level_spec = 2; +} +message DebugLevelResponse { + string sub_systems = 1; +} + +message PayReqString { + // The payment request string to be decoded + string pay_req = 1; +} +message PayReq { + string destination = 1; + string payment_hash = 2; + int64 num_satoshis = 3; + int64 timestamp = 4; + int64 expiry = 5; + string description = 6; + string description_hash = 7; + string fallback_addr = 8; + int64 cltv_expiry = 9; + repeated RouteHint route_hints = 10; + bytes payment_addr = 11; + int64 num_msat = 12; + map features = 13; +} + +enum FeatureBit { + DATALOSS_PROTECT_REQ = 0; + DATALOSS_PROTECT_OPT = 1; + INITIAL_ROUING_SYNC = 3; + UPFRONT_SHUTDOWN_SCRIPT_REQ = 4; + UPFRONT_SHUTDOWN_SCRIPT_OPT = 5; + GOSSIP_QUERIES_REQ = 6; + GOSSIP_QUERIES_OPT = 7; + TLV_ONION_REQ = 8; + TLV_ONION_OPT = 9; + EXT_GOSSIP_QUERIES_REQ = 10; + EXT_GOSSIP_QUERIES_OPT = 11; + STATIC_REMOTE_KEY_REQ = 12; + STATIC_REMOTE_KEY_OPT = 13; + PAYMENT_ADDR_REQ = 14; + PAYMENT_ADDR_OPT = 15; + MPP_REQ = 16; + MPP_OPT = 17; + WUMBO_CHANNELS_REQ = 18; + WUMBO_CHANNELS_OPT = 19; + ANCHORS_REQ = 20; + ANCHORS_OPT = 21; + ANCHORS_ZERO_FEE_HTLC_REQ = 22; + ANCHORS_ZERO_FEE_HTLC_OPT = 23; + ROUTE_BLINDING_REQUIRED = 24; + ROUTE_BLINDING_OPTIONAL = 25; + AMP_REQ = 30; + AMP_OPT = 31; +} + +message Feature { + string name = 2; + bool is_required = 3; + bool is_known = 4; +} + +message FeeReportRequest { +} +message ChannelFeeReport { + // The short channel id that this fee report belongs to. + uint64 chan_id = 5 [jstype = JS_STRING]; + + // The channel that this fee report belongs to. + string channel_point = 1; + + // The base fee charged regardless of the number of milli-satoshis sent. + int64 base_fee_msat = 2; + + // The amount charged per milli-satoshis transferred expressed in + // millionths of a satoshi. + int64 fee_per_mil = 3; + + // The effective fee rate in milli-satoshis. Computed by dividing the + // fee_per_mil value by 1 million. + double fee_rate = 4; + + // The base fee charged regardless of the number of milli-satoshis sent. + int32 inbound_base_fee_msat = 6; + + // The amount charged per milli-satoshis transferred expressed in + // millionths of a satoshi. + int32 inbound_fee_per_mil = 7; +} + +message FeeReportResponse { + // An array of channel fee reports which describes the current fee schedule + // for each channel. + repeated ChannelFeeReport channel_fees = 1; + + // The total amount of fee revenue (in satoshis) the switch has collected + // over the past 24 hrs. + uint64 day_fee_sum = 2; + + // The total amount of fee revenue (in satoshis) the switch has collected + // over the past 1 week. + uint64 week_fee_sum = 3; + + // The total amount of fee revenue (in satoshis) the switch has collected + // over the past 1 month. + uint64 month_fee_sum = 4; +} + +message PolicyUpdateRequest { + oneof scope { + // If set, then this update applies to all currently active channels. + bool global = 1; + + // If set, this update will target a specific channel. + ChannelPoint chan_point = 2; + } + + // The base fee charged regardless of the number of milli-satoshis sent. + int64 base_fee_msat = 3; + + // The effective fee rate in milli-satoshis. The precision of this value + // goes up to 6 decimal places, so 1e-6. + double fee_rate = 4; + + // The effective fee rate in micro-satoshis (parts per million). + uint32 fee_rate_ppm = 9; + + // The required timelock delta for HTLCs forwarded over the channel. + uint32 time_lock_delta = 5; + + // If set, the maximum HTLC size in milli-satoshis. If unset, the maximum + // HTLC will be unchanged. + uint64 max_htlc_msat = 6; + + // The minimum HTLC size in milli-satoshis. Only applied if + // min_htlc_msat_specified is true. + uint64 min_htlc_msat = 7; + + // If true, min_htlc_msat is applied. + bool min_htlc_msat_specified = 8; + + int32 inbound_base_fee_msat = 10; + int32 inbound_fee_rate_ppm = 11; +} + +enum UpdateFailure { + UPDATE_FAILURE_UNKNOWN = 0; + UPDATE_FAILURE_PENDING = 1; + UPDATE_FAILURE_NOT_FOUND = 2; + UPDATE_FAILURE_INTERNAL_ERR = 3; + UPDATE_FAILURE_INVALID_PARAMETER = 4; +} + +message FailedUpdate { + // The outpoint in format txid:n + OutPoint outpoint = 1; + + // Reason for the policy update failure. + UpdateFailure reason = 2; + + // A string representation of the policy update error. + string update_error = 3; +} + +message PolicyUpdateResponse { + // List of failed policy updates. + repeated FailedUpdate failed_updates = 1; +} + +message ForwardingHistoryRequest { + // Start time is the starting point of the forwarding history request. All + // records beyond this point will be included, respecting the end time, and + // the index offset. + uint64 start_time = 1; + + // End time is the end point of the forwarding history request. The + // response will carry at most 50k records between the start time and the + // end time. The index offset can be used to implement pagination. + uint64 end_time = 2; + + // Index offset is the offset in the time series to start at. As each + // response can only contain 50k records, callers can use this to skip + // around within a packed time series. + uint32 index_offset = 3; + + // The max number of events to return in the response to this query. + uint32 num_max_events = 4; + + // Informs the server if the peer alias should be looked up for each + // forwarding event. + bool peer_alias_lookup = 5; +} +message ForwardingEvent { + // Timestamp is the time (unix epoch offset) that this circuit was + // completed. Deprecated by timestamp_ns. + uint64 timestamp = 1 [deprecated = true]; + + // The incoming channel ID that carried the HTLC that created the circuit. + uint64 chan_id_in = 2 [jstype = JS_STRING]; + + // The outgoing channel ID that carried the preimage that completed the + // circuit. + uint64 chan_id_out = 4 [jstype = JS_STRING]; + + // The total amount (in satoshis) of the incoming HTLC that created half + // the circuit. + uint64 amt_in = 5; + + // The total amount (in satoshis) of the outgoing HTLC that created the + // second half of the circuit. + uint64 amt_out = 6; + + // The total fee (in satoshis) that this payment circuit carried. + uint64 fee = 7; + + // The total fee (in milli-satoshis) that this payment circuit carried. + uint64 fee_msat = 8; + + // The total amount (in milli-satoshis) of the incoming HTLC that created + // half the circuit. + uint64 amt_in_msat = 9; + + // The total amount (in milli-satoshis) of the outgoing HTLC that created + // the second half of the circuit. + uint64 amt_out_msat = 10; + + // The number of nanoseconds elapsed since January 1, 1970 UTC when this + // circuit was completed. + uint64 timestamp_ns = 11; + + // The peer alias of the incoming channel. + string peer_alias_in = 12; + + // The peer alias of the outgoing channel. + string peer_alias_out = 13; + + // TODO(roasbeef): add settlement latency? + // * use FPE on the chan id? + // * also list failures? +} +message ForwardingHistoryResponse { + // A list of forwarding events from the time slice of the time series + // specified in the request. + repeated ForwardingEvent forwarding_events = 1; + + // The index of the last time in the set of returned forwarding events. Can + // be used to seek further, pagination style. + uint32 last_offset_index = 2; +} + +message ExportChannelBackupRequest { + // The target channel point to obtain a back up for. + ChannelPoint chan_point = 1; +} + +message ChannelBackup { + /* + Identifies the channel that this backup belongs to. + */ + ChannelPoint chan_point = 1; + + /* + Is an encrypted single-chan backup. this can be passed to + RestoreChannelBackups, or the WalletUnlocker Init and Unlock methods in + order to trigger the recovery protocol. When using REST, this field must be + encoded as base64. + */ + bytes chan_backup = 2; +} + +message MultiChanBackup { + /* + Is the set of all channels that are included in this multi-channel backup. + */ + repeated ChannelPoint chan_points = 1; + + /* + A single encrypted blob containing all the static channel backups of the + channel listed above. This can be stored as a single file or blob, and + safely be replaced with any prior/future versions. When using REST, this + field must be encoded as base64. + */ + bytes multi_chan_backup = 2; +} + +message ChanBackupExportRequest { +} +message ChanBackupSnapshot { + /* + The set of new channels that have been added since the last channel backup + snapshot was requested. + */ + ChannelBackups single_chan_backups = 1; + + /* + A multi-channel backup that covers all open channels currently known to + lnd. + */ + MultiChanBackup multi_chan_backup = 2; +} + +message ChannelBackups { + /* + A set of single-chan static channel backups. + */ + repeated ChannelBackup chan_backups = 1; +} + +message RestoreChanBackupRequest { + oneof backup { + /* + The channels to restore as a list of channel/backup pairs. + */ + ChannelBackups chan_backups = 1; + + /* + The channels to restore in the packed multi backup format. When using + REST, this field must be encoded as base64. + */ + bytes multi_chan_backup = 2; + } +} +message RestoreBackupResponse { +} + +message ChannelBackupSubscription { +} + +message VerifyChanBackupResponse { +} + +message MacaroonPermission { + // The entity a permission grants access to. + string entity = 1; + + // The action that is granted. + string action = 2; +} +message BakeMacaroonRequest { + // The list of permissions the new macaroon should grant. + repeated MacaroonPermission permissions = 1; + + // The root key ID used to create the macaroon, must be a positive integer. + uint64 root_key_id = 2; + + /* + Informs the RPC on whether to allow external permissions that LND is not + aware of. + */ + bool allow_external_permissions = 3; +} +message BakeMacaroonResponse { + // The hex encoded macaroon, serialized in binary format. + string macaroon = 1; +} + +message ListMacaroonIDsRequest { +} +message ListMacaroonIDsResponse { + // The list of root key IDs that are in use. + repeated uint64 root_key_ids = 1; +} + +message DeleteMacaroonIDRequest { + // The root key ID to be removed. + uint64 root_key_id = 1; +} +message DeleteMacaroonIDResponse { + // A boolean indicates that the deletion is successful. + bool deleted = 1; +} + +message MacaroonPermissionList { + // A list of macaroon permissions. + repeated MacaroonPermission permissions = 1; +} + +message ListPermissionsRequest { +} +message ListPermissionsResponse { + /* + A map between all RPC method URIs and their required macaroon permissions to + access them. + */ + map method_permissions = 1; +} + +message Failure { + enum FailureCode { + /* + The numbers assigned in this enumeration match the failure codes as + defined in BOLT #4. Because protobuf 3 requires enums to start with 0, + a RESERVED value is added. + */ + RESERVED = 0; + + INCORRECT_OR_UNKNOWN_PAYMENT_DETAILS = 1; + INCORRECT_PAYMENT_AMOUNT = 2; + FINAL_INCORRECT_CLTV_EXPIRY = 3; + FINAL_INCORRECT_HTLC_AMOUNT = 4; + FINAL_EXPIRY_TOO_SOON = 5; + INVALID_REALM = 6; + EXPIRY_TOO_SOON = 7; + INVALID_ONION_VERSION = 8; + INVALID_ONION_HMAC = 9; + INVALID_ONION_KEY = 10; + AMOUNT_BELOW_MINIMUM = 11; + FEE_INSUFFICIENT = 12; + INCORRECT_CLTV_EXPIRY = 13; + CHANNEL_DISABLED = 14; + TEMPORARY_CHANNEL_FAILURE = 15; + REQUIRED_NODE_FEATURE_MISSING = 16; + REQUIRED_CHANNEL_FEATURE_MISSING = 17; + UNKNOWN_NEXT_PEER = 18; + TEMPORARY_NODE_FAILURE = 19; + PERMANENT_NODE_FAILURE = 20; + PERMANENT_CHANNEL_FAILURE = 21; + EXPIRY_TOO_FAR = 22; + MPP_TIMEOUT = 23; + INVALID_ONION_PAYLOAD = 24; + INVALID_ONION_BLINDING = 25; + + /* + An internal error occurred. + */ + INTERNAL_FAILURE = 997; + + /* + The error source is known, but the failure itself couldn't be decoded. + */ + UNKNOWN_FAILURE = 998; + + /* + An unreadable failure result is returned if the received failure message + cannot be decrypted. In that case the error source is unknown. + */ + UNREADABLE_FAILURE = 999; + } + + // Failure code as defined in the Lightning spec + FailureCode code = 1; + + reserved 2; + + // An optional channel update message. + ChannelUpdate channel_update = 3; + + // A failure type-dependent htlc value. + uint64 htlc_msat = 4; + + // The sha256 sum of the onion payload. + bytes onion_sha_256 = 5; + + // A failure type-dependent cltv expiry value. + uint32 cltv_expiry = 6; + + // A failure type-dependent flags value. + uint32 flags = 7; + + /* + The position in the path of the intermediate or final node that generated + the failure message. Position zero is the sender node. + **/ + uint32 failure_source_index = 8; + + // A failure type-dependent block height. + uint32 height = 9; +} + +message ChannelUpdate { + /* + The signature that validates the announced data and proves the ownership + of node id. + */ + bytes signature = 1; + + /* + The target chain that this channel was opened within. This value + should be the genesis hash of the target chain. Along with the short + channel ID, this uniquely identifies the channel globally in a + blockchain. + */ + bytes chain_hash = 2; + + /* + The unique description of the funding transaction. + */ + uint64 chan_id = 3 [jstype = JS_STRING]; + + /* + A timestamp that allows ordering in the case of multiple announcements. + We should ignore the message if timestamp is not greater than the + last-received. + */ + uint32 timestamp = 4; + + /* + The bitfield that describes whether optional fields are present in this + update. Currently, the least-significant bit must be set to 1 if the + optional field MaxHtlc is present. + */ + uint32 message_flags = 10; + + /* + The bitfield that describes additional meta-data concerning how the + update is to be interpreted. Currently, the least-significant bit must be + set to 0 if the creating node corresponds to the first node in the + previously sent channel announcement and 1 otherwise. If the second bit + is set, then the channel is set to be disabled. + */ + uint32 channel_flags = 5; + + /* + The minimum number of blocks this node requires to be added to the expiry + of HTLCs. This is a security parameter determined by the node operator. + This value represents the required gap between the time locks of the + incoming and outgoing HTLC's set to this node. + */ + uint32 time_lock_delta = 6; + + /* + The minimum HTLC value which will be accepted. + */ + uint64 htlc_minimum_msat = 7; + + /* + The base fee that must be used for incoming HTLC's to this particular + channel. This value will be tacked onto the required for a payment + independent of the size of the payment. + */ + uint32 base_fee = 8; + + /* + The fee rate that will be charged per millionth of a satoshi. + */ + uint32 fee_rate = 9; + + /* + The maximum HTLC value which will be accepted. + */ + uint64 htlc_maximum_msat = 11; + + /* + The set of data that was appended to this message, some of which we may + not actually know how to iterate or parse. By holding onto this data, we + ensure that we're able to properly validate the set of signatures that + cover these new fields, and ensure we're able to make upgrades to the + network in a forwards compatible manner. + */ + bytes extra_opaque_data = 12; +} + +message MacaroonId { + bytes nonce = 1; + bytes storageId = 2; + repeated Op ops = 3; +} + +message Op { + string entity = 1; + repeated string actions = 2; +} + +message CheckMacPermRequest { + bytes macaroon = 1; + repeated MacaroonPermission permissions = 2; + string fullMethod = 3; +} + +message CheckMacPermResponse { + bool valid = 1; +} + +message RPCMiddlewareRequest { + /* + The unique ID of the intercepted original gRPC request. Useful for mapping + request to response when implementing full duplex message interception. For + streaming requests, this will be the same ID for all incoming and outgoing + middleware intercept messages of the _same_ stream. + */ + uint64 request_id = 1; + + /* + The raw bytes of the complete macaroon as sent by the gRPC client in the + original request. This might be empty for a request that doesn't require + macaroons such as the wallet unlocker RPCs. + */ + bytes raw_macaroon = 2; + + /* + The parsed condition of the macaroon's custom caveat for convenient access. + This field only contains the value of the custom caveat that the handling + middleware has registered itself for. The condition _must_ be validated for + messages of intercept_type stream_auth and request! + */ + string custom_caveat_condition = 3; + + /* + There are three types of messages that will be sent to the middleware for + inspection and approval: Stream authentication, request and response + interception. The first two can only be accepted (=forward to main RPC + server) or denied (=return error to client). Intercepted responses can also + be replaced/overwritten. + */ + oneof intercept_type { + /* + Intercept stream authentication: each new streaming RPC call that is + initiated against lnd and contains the middleware's custom macaroon + caveat can be approved or denied based upon the macaroon in the stream + header. This message will only be sent for streaming RPCs, unary RPCs + must handle the macaroon authentication in the request interception to + avoid an additional message round trip between lnd and the middleware. + */ + StreamAuth stream_auth = 4; + + /* + Intercept incoming gRPC client request message: all incoming messages, + both on streaming and unary RPCs, are forwarded to the middleware for + inspection. For unary RPC messages the middleware is also expected to + validate the custom macaroon caveat of the request. + */ + RPCMessage request = 5; + + /* + Intercept outgoing gRPC response message: all outgoing messages, both on + streaming and unary RPCs, are forwarded to the middleware for inspection + and amendment. The response in this message is the original response as + it was generated by the main RPC server. It can either be accepted + (=forwarded to the client), replaced/overwritten with a new message of + the same type, or replaced by an error message. + */ + RPCMessage response = 6; + + /* + This is used to indicate to the client that the server has successfully + registered the interceptor. This is only used in the very first message + that the server sends to the client after the client sends the server + the middleware registration message. + */ + bool reg_complete = 8; + } + + /* + The unique message ID of this middleware intercept message. There can be + multiple middleware intercept messages per single gRPC request (one for the + incoming request and one for the outgoing response) or gRPC stream (one for + each incoming message and one for each outgoing response). This message ID + must be referenced when responding (accepting/rejecting/modifying) to an + intercept message. + */ + uint64 msg_id = 7; +} + +message StreamAuth { + /* + The full URI (in the format /./MethodName, for + example /lnrpc.Lightning/GetInfo) of the streaming RPC method that was just + established. + */ + string method_full_uri = 1; +} + +message RPCMessage { + /* + The full URI (in the format /./MethodName, for + example /lnrpc.Lightning/GetInfo) of the RPC method the message was sent + to/from. + */ + string method_full_uri = 1; + + /* + Indicates whether the message was sent over a streaming RPC method or not. + */ + bool stream_rpc = 2; + + /* + The full canonical gRPC name of the message type (in the format + .TypeName, for example lnrpc.GetInfoRequest). In case of an + error being returned from lnd, this simply contains the string "error". + */ + string type_name = 3; + + /* + The full content of the gRPC message, serialized in the binary protobuf + format. + */ + bytes serialized = 4; + + /* + Indicates that the response from lnd was an error, not a gRPC response. If + this is set to true then the type_name contains the string "error" and + serialized contains the error string. + */ + bool is_error = 5; +} + +message RPCMiddlewareResponse { + /* + The request message ID this response refers to. Must always be set when + giving feedback to an intercept but is ignored for the initial registration + message. + */ + uint64 ref_msg_id = 1; + + /* + The middleware can only send two types of messages to lnd: The initial + registration message that identifies the middleware and after that only + feedback messages to requests sent to the middleware. + */ + oneof middleware_message { + /* + The registration message identifies the middleware that's being + registered in lnd. The registration message must be sent immediately + after initiating the RegisterRpcMiddleware stream, otherwise lnd will + time out the attempt and terminate the request. NOTE: The middleware + will only receive interception messages for requests that contain a + macaroon with the custom caveat that the middleware declares it is + responsible for handling in the registration message! As a security + measure, _no_ middleware can intercept requests made with _unencumbered_ + macaroons! + */ + MiddlewareRegistration register = 2; + + /* + The middleware received an interception request and gives feedback to + it. The request_id indicates what message the feedback refers to. + */ + InterceptFeedback feedback = 3; + } +} + +message MiddlewareRegistration { + /* + The name of the middleware to register. The name should be as informative + as possible and is logged on registration. + */ + string middleware_name = 1; + + /* + The name of the custom macaroon caveat that this middleware is responsible + for. Only requests/responses that contain a macaroon with the registered + custom caveat are forwarded for interception to the middleware. The + exception being the read-only mode: All requests/responses are forwarded to + a middleware that requests read-only access but such a middleware won't be + allowed to _alter_ responses. As a security measure, _no_ middleware can + change responses to requests made with _unencumbered_ macaroons! + NOTE: Cannot be used at the same time as read_only_mode. + */ + string custom_macaroon_caveat_name = 2; + + /* + Instead of defining a custom macaroon caveat name a middleware can register + itself for read-only access only. In that mode all requests/responses are + forwarded to the middleware but the middleware isn't allowed to alter any of + the responses. + NOTE: Cannot be used at the same time as custom_macaroon_caveat_name. + */ + bool read_only_mode = 3; +} + +message InterceptFeedback { + /* + The error to return to the user. If this is non-empty, the incoming gRPC + stream/request is aborted and the error is returned to the gRPC client. If + this value is empty, it means the middleware accepts the stream/request/ + response and the processing of it can continue. + */ + string error = 1; + + /* + A boolean indicating that the gRPC message should be replaced/overwritten. + This boolean is needed because in protobuf an empty message is serialized as + a 0-length or nil byte slice and we wouldn't be able to distinguish between + an empty replacement message and the "don't replace anything" case. + */ + bool replace_response = 2; + + /* + If the replace_response field is set to true, this field must contain the + binary serialized gRPC message in the protobuf format. + */ + bytes replacement_serialized = 3; +} diff --git a/proto/router.proto b/proto/router.proto new file mode 100644 index 0000000..a909828 --- /dev/null +++ b/proto/router.proto @@ -0,0 +1,1014 @@ +syntax = "proto3"; + +package routerrpc; + +import "lightning.proto"; + +option go_package = "github.com/lightningnetwork/lnd/lnrpc/routerrpc"; + +/* + * Comments in this file will be directly parsed into the API + * Documentation as descriptions of the associated method, message, or field. + * These descriptions should go right above the definition of the object, and + * can be in either block or // comment format. + * + * An RPC method can be matched to an lncli command by placing a line in the + * beginning of the description in exactly the following format: + * lncli: `methodname` + * + * Failure to specify the exact name of the command will cause documentation + * generation to fail. + * + * More information on how exactly the gRPC documentation is generated from + * this proto file can be found here: + * https://github.com/lightninglabs/lightning-api + */ + +// Router is a service that offers advanced interaction with the router +// subsystem of the daemon. +service Router { + /* + SendPaymentV2 attempts to route a payment described by the passed + PaymentRequest to the final destination. The call returns a stream of + payment updates. When using this RPC, make sure to set a fee limit, as the + default routing fee limit is 0 sats. Without a non-zero fee limit only + routes without fees will be attempted which often fails with + FAILURE_REASON_NO_ROUTE. + */ + rpc SendPaymentV2 (SendPaymentRequest) returns (stream lnrpc.Payment); + + /* lncli: `trackpayment` + TrackPaymentV2 returns an update stream for the payment identified by the + payment hash. + */ + rpc TrackPaymentV2 (TrackPaymentRequest) returns (stream lnrpc.Payment); + + /* + TrackPayments returns an update stream for every payment that is not in a + terminal state. Note that if payments are in-flight while starting a new + subscription, the start of the payment stream could produce out-of-order + and/or duplicate events. In order to get updates for every in-flight + payment attempt make sure to subscribe to this method before initiating any + payments. + */ + rpc TrackPayments (TrackPaymentsRequest) returns (stream lnrpc.Payment); + + /* + EstimateRouteFee allows callers to obtain a lower bound w.r.t how much it + may cost to send an HTLC to the target end destination. + */ + rpc EstimateRouteFee (RouteFeeRequest) returns (RouteFeeResponse); + + /* + Deprecated, use SendToRouteV2. SendToRoute attempts to make a payment via + the specified route. This method differs from SendPayment in that it + allows users to specify a full route manually. This can be used for + things like rebalancing, and atomic swaps. It differs from the newer + SendToRouteV2 in that it doesn't return the full HTLC information. + */ + rpc SendToRoute (SendToRouteRequest) returns (SendToRouteResponse) { + option deprecated = true; + } + + /* + SendToRouteV2 attempts to make a payment via the specified route. This + method differs from SendPayment in that it allows users to specify a full + route manually. This can be used for things like rebalancing, and atomic + swaps. + */ + rpc SendToRouteV2 (SendToRouteRequest) returns (lnrpc.HTLCAttempt); + + /* lncli: `resetmc` + ResetMissionControl clears all mission control state and starts with a clean + slate. + */ + rpc ResetMissionControl (ResetMissionControlRequest) + returns (ResetMissionControlResponse); + + /* lncli: `querymc` + QueryMissionControl exposes the internal mission control state to callers. + It is a development feature. + */ + rpc QueryMissionControl (QueryMissionControlRequest) + returns (QueryMissionControlResponse); + + /* lncli: `importmc` + XImportMissionControl is an experimental API that imports the state provided + to the internal mission control's state, using all results which are more + recent than our existing values. These values will only be imported + in-memory, and will not be persisted across restarts. + */ + rpc XImportMissionControl (XImportMissionControlRequest) + returns (XImportMissionControlResponse); + + /* lncli: `getmccfg` + GetMissionControlConfig returns mission control's current config. + */ + rpc GetMissionControlConfig (GetMissionControlConfigRequest) + returns (GetMissionControlConfigResponse); + + /* lncli: `setmccfg` + SetMissionControlConfig will set mission control's config, if the config + provided is valid. + */ + rpc SetMissionControlConfig (SetMissionControlConfigRequest) + returns (SetMissionControlConfigResponse); + + /* lncli: `queryprob` + Deprecated. QueryProbability returns the current success probability + estimate for a given node pair and amount. The call returns a zero success + probability if no channel is available or if the amount violates min/max + HTLC constraints. + */ + rpc QueryProbability (QueryProbabilityRequest) + returns (QueryProbabilityResponse); + + /* lncli: `buildroute` + BuildRoute builds a fully specified route based on a list of hop public + keys. It retrieves the relevant channel policies from the graph in order to + calculate the correct fees and time locks. + Note that LND will use its default final_cltv_delta if no value is supplied. + Make sure to add the correct final_cltv_delta depending on the invoice + restriction. Moreover the caller has to make sure to provide the + payment_addr if the route is paying an invoice which signaled it. + */ + rpc BuildRoute (BuildRouteRequest) returns (BuildRouteResponse); + + /* + SubscribeHtlcEvents creates a uni-directional stream from the server to + the client which delivers a stream of htlc events. + */ + rpc SubscribeHtlcEvents (SubscribeHtlcEventsRequest) + returns (stream HtlcEvent); + + /* + Deprecated, use SendPaymentV2. SendPayment attempts to route a payment + described by the passed PaymentRequest to the final destination. The call + returns a stream of payment status updates. + */ + rpc SendPayment (SendPaymentRequest) returns (stream PaymentStatus) { + option deprecated = true; + } + + /* + Deprecated, use TrackPaymentV2. TrackPayment returns an update stream for + the payment identified by the payment hash. + */ + rpc TrackPayment (TrackPaymentRequest) returns (stream PaymentStatus) { + option deprecated = true; + } + + /** + HtlcInterceptor dispatches a bi-directional streaming RPC in which + Forwarded HTLC requests are sent to the client and the client responds with + a boolean that tells LND if this htlc should be intercepted. + In case of interception, the htlc can be either settled, cancelled or + resumed later by using the ResolveHoldForward endpoint. + */ + rpc HtlcInterceptor (stream ForwardHtlcInterceptResponse) + returns (stream ForwardHtlcInterceptRequest); + + /* lncli: `updatechanstatus` + UpdateChanStatus attempts to manually set the state of a channel + (enabled, disabled, or auto). A manual "disable" request will cause the + channel to stay disabled until a subsequent manual request of either + "enable" or "auto". + */ + rpc UpdateChanStatus (UpdateChanStatusRequest) + returns (UpdateChanStatusResponse); +} + +message SendPaymentRequest { + // The identity pubkey of the payment recipient + bytes dest = 1; + + /* + Number of satoshis to send. + + The fields amt and amt_msat are mutually exclusive. + */ + int64 amt = 2; + + // The hash to use within the payment's HTLC + bytes payment_hash = 3; + + /* + The CLTV delta from the current height that should be used to set the + timelock for the final hop. + */ + int32 final_cltv_delta = 4; + + /* + A bare-bones invoice for a payment within the Lightning Network. With the + details of the invoice, the sender has all the data necessary to send a + payment to the recipient. The amount in the payment request may be zero. In + that case it is required to set the amt field as well. If no payment request + is specified, the following fields are required: dest, amt and payment_hash. + */ + string payment_request = 5; + + /* + An upper limit on the amount of time we should spend when attempting to + fulfill the payment. This is expressed in seconds. If we cannot make a + successful payment within this time frame, an error will be returned. + This field must be non-zero. + */ + int32 timeout_seconds = 6; + + /* + The maximum number of satoshis that will be paid as a fee of the payment. + If this field is left to the default value of 0, only zero-fee routes will + be considered. This usually means single hop routes connecting directly to + the destination. To send the payment without a fee limit, use max int here. + + The fields fee_limit_sat and fee_limit_msat are mutually exclusive. + */ + int64 fee_limit_sat = 7; + + /* + Deprecated, use outgoing_chan_ids. The channel id of the channel that must + be taken to the first hop. If zero, any channel may be used (unless + outgoing_chan_ids are set). + */ + uint64 outgoing_chan_id = 8 [jstype = JS_STRING, deprecated = true]; + + /* + An optional maximum total time lock for the route. This should not + exceed lnd's `--max-cltv-expiry` setting. If zero, then the value of + `--max-cltv-expiry` is enforced. + */ + int32 cltv_limit = 9; + + /* + Optional route hints to reach the destination through private channels. + */ + repeated lnrpc.RouteHint route_hints = 10; + + /* + An optional field that can be used to pass an arbitrary set of TLV records + to a peer which understands the new records. This can be used to pass + application specific data during the payment attempt. Record types are + required to be in the custom range >= 65536. When using REST, the values + must be encoded as base64. + */ + map dest_custom_records = 11; + + /* + Number of millisatoshis to send. + + The fields amt and amt_msat are mutually exclusive. + */ + int64 amt_msat = 12; + + /* + The maximum number of millisatoshis that will be paid as a fee of the + payment. If this field is left to the default value of 0, only zero-fee + routes will be considered. This usually means single hop routes connecting + directly to the destination. To send the payment without a fee limit, use + max int here. + + The fields fee_limit_sat and fee_limit_msat are mutually exclusive. + */ + int64 fee_limit_msat = 13; + + /* + The pubkey of the last hop of the route. If empty, any hop may be used. + */ + bytes last_hop_pubkey = 14; + + // If set, circular payments to self are permitted. + bool allow_self_payment = 15; + + /* + Features assumed to be supported by the final node. All transitive feature + dependencies must also be set properly. For a given feature bit pair, either + optional or remote may be set, but not both. If this field is nil or empty, + the router will try to load destination features from the graph as a + fallback. + */ + repeated lnrpc.FeatureBit dest_features = 16; + + /* + The maximum number of partial payments that may be use to complete the full + amount. + */ + uint32 max_parts = 17; + + /* + If set, only the final payment update is streamed back. Intermediate updates + that show which htlcs are still in flight are suppressed. + */ + bool no_inflight_updates = 18; + + /* + The channel ids of the channels are allowed for the first hop. If empty, + any channel may be used. + */ + repeated uint64 outgoing_chan_ids = 19; + + /* + An optional payment addr to be included within the last hop of the route. + This is also called payment secret in specifications (e.g. BOLT 11). + */ + bytes payment_addr = 20; + + /* + The largest payment split that should be attempted when making a payment if + splitting is necessary. Setting this value will effectively cause lnd to + split more aggressively, vs only when it thinks it needs to. Note that this + value is in milli-satoshis. + */ + uint64 max_shard_size_msat = 21; + + /* + If set, an AMP-payment will be attempted. + */ + bool amp = 22; + + /* + The time preference for this payment. Set to -1 to optimize for fees + only, to 1 to optimize for reliability only or a value inbetween for a mix. + */ + double time_pref = 23; +} + +message TrackPaymentRequest { + // The hash of the payment to look up. + bytes payment_hash = 1; + + /* + If set, only the final payment update is streamed back. Intermediate updates + that show which htlcs are still in flight are suppressed. + */ + bool no_inflight_updates = 2; +} + +message TrackPaymentsRequest { + /* + If set, only the final payment updates are streamed back. Intermediate + updates that show which htlcs are still in flight are suppressed. + */ + bool no_inflight_updates = 1; +} + +message RouteFeeRequest { + /* + The destination one wishes to obtain a routing fee quote to. If set, this + parameter requires the amt_sat parameter also to be set. This parameter + combination triggers a graph based routing fee estimation as opposed to a + payment probe based estimate in case a payment request is provided. The + graph based estimation is an algorithm that is executed on the in memory + graph. Hence its runtime is significantly shorter than a payment probe + estimation that sends out actual payments to the network. + */ + bytes dest = 1; + + /* + The amount one wishes to send to the target destination. It is only to be + used in combination with the dest parameter. + */ + int64 amt_sat = 2; + + /* + A payment request of the target node that the route fee request is intended + for. Its parameters are input to probe payments that estimate routing fees. + The timeout parameter can be specified to set a maximum time on the probing + attempt. Cannot be used in combination with dest and amt_sat. + */ + string payment_request = 3; + + /* + A user preference of how long a probe payment should maximally be allowed to + take, denoted in seconds. The probing payment loop is aborted if this + timeout is reached. Note that the probing process itself can take longer + than the timeout if the HTLC becomes delayed or stuck. Canceling the context + of this call will not cancel the payment loop, the duration is only + controlled by the timeout parameter. + */ + uint32 timeout = 4; +} + +message RouteFeeResponse { + /* + A lower bound of the estimated fee to the target destination within the + network, expressed in milli-satoshis. + */ + int64 routing_fee_msat = 1; + + /* + An estimate of the worst case time delay that can occur. Note that callers + will still need to factor in the final CLTV delta of the last hop into this + value. + */ + int64 time_lock_delay = 2; + + /* + An indication whether a probing payment succeeded or whether and why it + failed. FAILURE_REASON_NONE indicates success. + */ + lnrpc.PaymentFailureReason failure_reason = 5; +} + +message SendToRouteRequest { + // The payment hash to use for the HTLC. + bytes payment_hash = 1; + + // Route that should be used to attempt to complete the payment. + lnrpc.Route route = 2; + + /* + Whether the payment should be marked as failed when a temporary error is + returned from the given route. Set it to true so the payment won't be + failed unless a terminal error is occurred, such as payment timeout, no + routes, incorrect payment details, or insufficient funds. + */ + bool skip_temp_err = 3; +} + +message SendToRouteResponse { + // The preimage obtained by making the payment. + bytes preimage = 1; + + // The failure message in case the payment failed. + lnrpc.Failure failure = 2; +} + +message ResetMissionControlRequest { +} + +message ResetMissionControlResponse { +} + +message QueryMissionControlRequest { +} + +// QueryMissionControlResponse contains mission control state. +message QueryMissionControlResponse { + reserved 1; + + // Node pair-level mission control state. + repeated PairHistory pairs = 2; +} + +message XImportMissionControlRequest { + // Node pair-level mission control state to be imported. + repeated PairHistory pairs = 1; + + // Whether to force override MC pair history. Note that even with force + // override the failure pair is imported before the success pair and both + // still clamp existing failure/success amounts. + bool force = 2; +} + +message XImportMissionControlResponse { +} + +// PairHistory contains the mission control state for a particular node pair. +message PairHistory { + // The source node pubkey of the pair. + bytes node_from = 1; + + // The destination node pubkey of the pair. + bytes node_to = 2; + + reserved 3, 4, 5, 6; + + PairData history = 7; +} + +message PairData { + // Time of last failure. + int64 fail_time = 1; + + /* + Lowest amount that failed to forward rounded to whole sats. This may be + set to zero if the failure is independent of amount. + */ + int64 fail_amt_sat = 2; + + /* + Lowest amount that failed to forward in millisats. This may be + set to zero if the failure is independent of amount. + */ + int64 fail_amt_msat = 4; + + reserved 3; + + // Time of last success. + int64 success_time = 5; + + // Highest amount that we could successfully forward rounded to whole sats. + int64 success_amt_sat = 6; + + // Highest amount that we could successfully forward in millisats. + int64 success_amt_msat = 7; +} + +message GetMissionControlConfigRequest { +} + +message GetMissionControlConfigResponse { + /* + Mission control's currently active config. + */ + MissionControlConfig config = 1; +} + +message SetMissionControlConfigRequest { + /* + The config to set for mission control. Note that all values *must* be set, + because the full config will be applied. + */ + MissionControlConfig config = 1; +} + +message SetMissionControlConfigResponse { +} + +message MissionControlConfig { + /* + Deprecated, use AprioriParameters. The amount of time mission control will + take to restore a penalized node or channel back to 50% success probability, + expressed in seconds. Setting this value to a higher value will penalize + failures for longer, making mission control less likely to route through + nodes and channels that we have previously recorded failures for. + */ + uint64 half_life_seconds = 1 [deprecated = true]; + + /* + Deprecated, use AprioriParameters. The probability of success mission + control should assign to hop in a route where it has no other information + available. Higher values will make mission control more willing to try hops + that we have no information about, lower values will discourage trying these + hops. + */ + float hop_probability = 2 [deprecated = true]; + + /* + Deprecated, use AprioriParameters. The importance that mission control + should place on historical results, expressed as a value in [0;1]. Setting + this value to 1 will ignore all historical payments and just use the hop + probability to assess the probability of success for each hop. A zero value + ignores hop probability completely and relies entirely on historical + results, unless none are available. + */ + float weight = 3 [deprecated = true]; + + /* + The maximum number of payment results that mission control will store. + */ + uint32 maximum_payment_results = 4; + + /* + The minimum time that must have passed since the previously recorded failure + before we raise the failure amount. + */ + uint64 minimum_failure_relax_interval = 5; + + enum ProbabilityModel { + APRIORI = 0; + BIMODAL = 1; + } + + /* + ProbabilityModel defines which probability estimator should be used in + pathfinding. Note that the bimodal estimator is experimental. + */ + ProbabilityModel model = 6; + + /* + EstimatorConfig is populated dependent on the estimator type. + */ + oneof EstimatorConfig { + AprioriParameters apriori = 7; + BimodalParameters bimodal = 8; + } +} + +message BimodalParameters { + /* + NodeWeight defines how strongly other previous forwardings on channels of a + router should be taken into account when computing a channel's probability + to route. The allowed values are in the range [0, 1], where a value of 0 + means that only direct information about a channel is taken into account. + */ + double node_weight = 1; + + /* + ScaleMsat describes the scale over which channels statistically have some + liquidity left. The value determines how quickly the bimodal distribution + drops off from the edges of a channel. A larger value (compared to typical + channel capacities) means that the drop off is slow and that channel + balances are distributed more uniformly. A small value leads to the + assumption of very unbalanced channels. + */ + uint64 scale_msat = 2; + + /* + DecayTime describes the information decay of knowledge about previous + successes and failures in channels. The smaller the decay time, the quicker + we forget about past forwardings. + */ + uint64 decay_time = 3; +} + +message AprioriParameters { + /* + The amount of time mission control will take to restore a penalized node + or channel back to 50% success probability, expressed in seconds. Setting + this value to a higher value will penalize failures for longer, making + mission control less likely to route through nodes and channels that we + have previously recorded failures for. + */ + uint64 half_life_seconds = 1; + + /* + The probability of success mission control should assign to hop in a route + where it has no other information available. Higher values will make mission + control more willing to try hops that we have no information about, lower + values will discourage trying these hops. + */ + double hop_probability = 2; + + /* + The importance that mission control should place on historical results, + expressed as a value in [0;1]. Setting this value to 1 will ignore all + historical payments and just use the hop probability to assess the + probability of success for each hop. A zero value ignores hop probability + completely and relies entirely on historical results, unless none are + available. + */ + double weight = 3; + + /* + The fraction of a channel's capacity that we consider to have liquidity. For + amounts that come close to or exceed the fraction, an additional penalty is + applied. A value of 1.0 disables the capacity factor. Allowed values are in + [0.75, 1.0]. + */ + double capacity_fraction = 4; +} + +message QueryProbabilityRequest { + // The source node pubkey of the pair. + bytes from_node = 1; + + // The destination node pubkey of the pair. + bytes to_node = 2; + + // The amount for which to calculate a probability. + int64 amt_msat = 3; +} + +message QueryProbabilityResponse { + // The success probability for the requested pair. + double probability = 1; + + // The historical data for the requested pair. + PairData history = 2; +} + +message BuildRouteRequest { + /* + The amount to send expressed in msat. If set to zero, the minimum routable + amount is used. + */ + int64 amt_msat = 1; + + /* + CLTV delta from the current height that should be used for the timelock + of the final hop + */ + int32 final_cltv_delta = 2; + + /* + The channel id of the channel that must be taken to the first hop. If zero, + any channel may be used. + */ + uint64 outgoing_chan_id = 3 [jstype = JS_STRING]; + + /* + A list of hops that defines the route. This does not include the source hop + pubkey. + */ + repeated bytes hop_pubkeys = 4; + + /* + An optional payment addr to be included within the last hop of the route. + This is also called payment secret in specifications (e.g. BOLT 11). + */ + bytes payment_addr = 5; +} + +message BuildRouteResponse { + /* + Fully specified route that can be used to execute the payment. + */ + lnrpc.Route route = 1; +} + +message SubscribeHtlcEventsRequest { +} + +/* +HtlcEvent contains the htlc event that was processed. These are served on a +best-effort basis; events are not persisted, delivery is not guaranteed +(in the event of a crash in the switch, forward events may be lost) and +some events may be replayed upon restart. Events consumed from this package +should be de-duplicated by the htlc's unique combination of incoming and +outgoing channel id and htlc id. [EXPERIMENTAL] +*/ +message HtlcEvent { + /* + The short channel id that the incoming htlc arrived at our node on. This + value is zero for sends. + */ + uint64 incoming_channel_id = 1; + + /* + The short channel id that the outgoing htlc left our node on. This value + is zero for receives. + */ + uint64 outgoing_channel_id = 2; + + /* + Incoming id is the index of the incoming htlc in the incoming channel. + This value is zero for sends. + */ + uint64 incoming_htlc_id = 3; + + /* + Outgoing id is the index of the outgoing htlc in the outgoing channel. + This value is zero for receives. + */ + uint64 outgoing_htlc_id = 4; + + /* + The time in unix nanoseconds that the event occurred. + */ + uint64 timestamp_ns = 5; + + enum EventType { + UNKNOWN = 0; + SEND = 1; + RECEIVE = 2; + FORWARD = 3; + } + + /* + The event type indicates whether the htlc was part of a send, receive or + forward. + */ + EventType event_type = 6; + + oneof event { + ForwardEvent forward_event = 7; + ForwardFailEvent forward_fail_event = 8; + SettleEvent settle_event = 9; + LinkFailEvent link_fail_event = 10; + SubscribedEvent subscribed_event = 11; + FinalHtlcEvent final_htlc_event = 12; + } +} + +message HtlcInfo { + // The timelock on the incoming htlc. + uint32 incoming_timelock = 1; + + // The timelock on the outgoing htlc. + uint32 outgoing_timelock = 2; + + // The amount of the incoming htlc. + uint64 incoming_amt_msat = 3; + + // The amount of the outgoing htlc. + uint64 outgoing_amt_msat = 4; +} + +message ForwardEvent { + // Info contains details about the htlc that was forwarded. + HtlcInfo info = 1; +} + +message ForwardFailEvent { +} + +message SettleEvent { + // The revealed preimage. + bytes preimage = 1; +} + +message FinalHtlcEvent { + bool settled = 1; + bool offchain = 2; +} + +message SubscribedEvent { +} + +message LinkFailEvent { + // Info contains details about the htlc that we failed. + HtlcInfo info = 1; + + // FailureCode is the BOLT error code for the failure. + lnrpc.Failure.FailureCode wire_failure = 2; + + /* + FailureDetail provides additional information about the reason for the + failure. This detail enriches the information provided by the wire message + and may be 'no detail' if the wire message requires no additional metadata. + */ + FailureDetail failure_detail = 3; + + // A string representation of the link failure. + string failure_string = 4; +} + +enum FailureDetail { + UNKNOWN = 0; + NO_DETAIL = 1; + ONION_DECODE = 2; + LINK_NOT_ELIGIBLE = 3; + ON_CHAIN_TIMEOUT = 4; + HTLC_EXCEEDS_MAX = 5; + INSUFFICIENT_BALANCE = 6; + INCOMPLETE_FORWARD = 7; + HTLC_ADD_FAILED = 8; + FORWARDS_DISABLED = 9; + INVOICE_CANCELED = 10; + INVOICE_UNDERPAID = 11; + INVOICE_EXPIRY_TOO_SOON = 12; + INVOICE_NOT_OPEN = 13; + MPP_INVOICE_TIMEOUT = 14; + ADDRESS_MISMATCH = 15; + SET_TOTAL_MISMATCH = 16; + SET_TOTAL_TOO_LOW = 17; + SET_OVERPAID = 18; + UNKNOWN_INVOICE = 19; + INVALID_KEYSEND = 20; + MPP_IN_PROGRESS = 21; + CIRCULAR_ROUTE = 22; +} + +enum PaymentState { + /* + Payment is still in flight. + */ + IN_FLIGHT = 0; + + /* + Payment completed successfully. + */ + SUCCEEDED = 1; + + /* + There are more routes to try, but the payment timeout was exceeded. + */ + FAILED_TIMEOUT = 2; + + /* + All possible routes were tried and failed permanently. Or were no + routes to the destination at all. + */ + FAILED_NO_ROUTE = 3; + + /* + A non-recoverable error has occurred. + */ + FAILED_ERROR = 4; + + /* + Payment details incorrect (unknown hash, invalid amt or + invalid final cltv delta) + */ + FAILED_INCORRECT_PAYMENT_DETAILS = 5; + + /* + Insufficient local balance. + */ + FAILED_INSUFFICIENT_BALANCE = 6; +} + +message PaymentStatus { + // Current state the payment is in. + PaymentState state = 1; + + /* + The pre-image of the payment when state is SUCCEEDED. + */ + bytes preimage = 2; + + reserved 3; + + /* + The HTLCs made in attempt to settle the payment [EXPERIMENTAL]. + */ + repeated lnrpc.HTLCAttempt htlcs = 4; +} + +message CircuitKey { + /// The id of the channel that the is part of this circuit. + uint64 chan_id = 1; + + /// The index of the incoming htlc in the incoming channel. + uint64 htlc_id = 2; +} + +message ForwardHtlcInterceptRequest { + /* + The key of this forwarded htlc. It defines the incoming channel id and + the index in this channel. + */ + CircuitKey incoming_circuit_key = 1; + + // The incoming htlc amount. + uint64 incoming_amount_msat = 5; + + // The incoming htlc expiry. + uint32 incoming_expiry = 6; + + /* + The htlc payment hash. This value is not guaranteed to be unique per + request. + */ + bytes payment_hash = 2; + + // The requested outgoing channel id for this forwarded htlc. Because of + // non-strict forwarding, this isn't necessarily the channel over which the + // packet will be forwarded eventually. A different channel to the same peer + // may be selected as well. + uint64 outgoing_requested_chan_id = 7; + + // The outgoing htlc amount. + uint64 outgoing_amount_msat = 3; + + // The outgoing htlc expiry. + uint32 outgoing_expiry = 4; + + // Any custom records that were present in the payload. + map custom_records = 8; + + // The onion blob for the next hop + bytes onion_blob = 9; + + // The block height at which this htlc will be auto-failed to prevent the + // channel from force-closing. + int32 auto_fail_height = 10; +} + +/** +ForwardHtlcInterceptResponse enables the caller to resolve a previously hold +forward. The caller can choose either to: +- `Resume`: Execute the default behavior (usually forward). +- `Reject`: Fail the htlc backwards. +- `Settle`: Settle this htlc with a given preimage. +*/ +message ForwardHtlcInterceptResponse { + /** + The key of this forwarded htlc. It defines the incoming channel id and + the index in this channel. + */ + CircuitKey incoming_circuit_key = 1; + + // The resolve action for this intercepted htlc. + ResolveHoldForwardAction action = 2; + + // The preimage in case the resolve action is Settle. + bytes preimage = 3; + + // Encrypted failure message in case the resolve action is Fail. + // + // If failure_message is specified, the failure_code field must be set + // to zero. + bytes failure_message = 4; + + // Return the specified failure code in case the resolve action is Fail. The + // message data fields are populated automatically. + // + // If a non-zero failure_code is specified, failure_message must not be set. + // + // For backwards-compatibility reasons, TEMPORARY_CHANNEL_FAILURE is the + // default value for this field. + lnrpc.Failure.FailureCode failure_code = 5; +} + +enum ResolveHoldForwardAction { + SETTLE = 0; + FAIL = 1; + RESUME = 2; +} + +message UpdateChanStatusRequest { + lnrpc.ChannelPoint chan_point = 1; + + ChanStatusAction action = 2; +} + +enum ChanStatusAction { + ENABLE = 0; + DISABLE = 1; + AUTO = 2; +} + +message UpdateChanStatusResponse { +}