Add additional EVM-compatible RPC methods (#210)

README.md

@@ -36,7 +36,11 @@ Comparatively running your full node, Confura makes it easy to build a high perf
 
 #### Metrics
 
-* Component instrumentation && monitoring using [RED](https://www.weave.works/blog/the-red-method-key-metrics-for-microservices-architecture/) method.
+- Component instrumentation && monitoring using [RED](https://www.weave.works/blog/the-red-method-key-metrics-for-microservices-architecture/) method.
+
+#### EVM Compatibility
+
+- Strives for maximum compatibility with EVM-compatible blockchains, spaces, and Layer2 solutions.
 
 ## Prerequisites
 

rpc/eth_api.go

@@ -246,7 +246,7 @@ func (api *ethAPI) GetTransactionCount(
 	return (*hexutil.Big)(count), err
 }
 
-// SendTransaction injects a signed transaction into the pending pool for execution.
+// SendRawTransaction injects a signed transaction into the pending pool for execution.
 //
 // If the transaction was a contract creation use the TransactionReceipt method to get the
 // contract address after the transaction has been mined.

rpc/net_api.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/Conflux-Chain/confura/rpc/cache"
+	"github.com/ethereum/go-ethereum/common/hexutil"
 )
 
 // netAPI provides evm space net RPC proxy API.
@@ -14,3 +15,17 @@ func (api *netAPI) Version(ctx context.Context) (string, error) {
 	w3c := GetEthClientFromContext(ctx)
 	return cache.EthDefault.GetNetVersion(w3c.Client)
 }
+
+// Listening returns true if client is actively listening for network connections.
+func (api *netAPI) Listening(ctx context.Context) (res bool, err error) {
+	w3c := GetEthClientFromContext(ctx)
+	err = w3c.Client.CallContext(ctx, &res, "net_listening")
+	return res, err
+}
+
+// PeerCount Returns number of peers currently connected to the client.
+func (api *netAPI) PeerCount(ctx context.Context) (res hexutil.Uint64, err error) {
+	w3c := GetEthClientFromContext(ctx)
+	err = w3c.Client.CallContext(ctx, (*uint64)(&res), "net_peerCount")
+	return res, err
+}

rpc/web3_api.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/Conflux-Chain/confura/rpc/cache"
+	"github.com/ethereum/go-ethereum/common/hexutil"
 )
 
 // web3API provides evm space web3 RPC proxy API.
@@ -14,3 +15,10 @@ func (api *web3API) ClientVersion(ctx context.Context) (string, error) {
 	w3c := GetEthClientFromContext(ctx)
 	return cache.EthDefault.GetClientVersion(w3c.Client)
 }
+
+// Sha3 returns Keccak-256 (not the standardized SHA3-256) hash of the given data.
+func (api *web3API) Sha3(ctx context.Context, data hexutil.Bytes) (res hexutil.Bytes, err error) {
+	w3c := GetEthClientFromContext(ctx)
+	err = w3c.Client.CallContext(ctx, &res, "web3_sha3", data)
+	return res, err
+}