…2189)

Co-authored-by: Age Manning <Age@AgeManning.com>

…bp2p#2063)

This commit adds an auxiliary crate recording protocol and Swarm events
and exposing them as metrics in the OpenMetrics format.

Basic file sharing application with peers either providing or locating
and getting files by name.

While obviously showcasing how to build a basic file sharing
application, the actual goal of this example is **to show how to
integrate rust-libp2p into a larger application**.

Architectural properties

- Clean clonable async/await interface ([`Client`]) to interact with the
network layer.

- Single task driving the network layer, no locks required.

Introduce `KademliaStoreInserts` option, which allows to filter records.

Co-authored-by: Max Inden <mail@max-inden.de>

…ibp2p#2192)

Implement ProtocolsHandler on either::Either representing either of two
ProtocolsHandler implementations.

Co-authored-by: Thomas Eizinger <thomas@eizinger.io>

Co-authored-by: Max Inden <mail@max-inden.de>

)

This logic seems to be a leftover of
libp2p#889 and unused today.

With f2905c0 the secp256k1 feature is
disabled by default. Instead of enabling it in the dev-dependency,
simply use ed25519.

Updates the requirements on [minicbor](https://gitlab.com/twittner/minicbor) to permit the latest version.
- [Release notes](https://gitlab.com/twittner/minicbor/tags)
- [Changelog](https://gitlab.com/twittner/minicbor/blob/master/CHANGELOG.md)
- [Commits](https://gitlab.com/twittner/minicbor/compare/minicbor-v0.10.0...minicbor-v0.11.0)

---
updated-dependencies:
- dependency-name: minicbor
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* build(deps): Update salsa20 requirement from 0.8 to 0.9

Updates the requirements on [salsa20](https://github.com/RustCrypto/stream-ciphers) to permit the latest version.
- [Release notes](https://github.com/RustCrypto/stream-ciphers/releases)
- [Commits](RustCrypto/stream-ciphers@ctr-v0.8.0...salsa20-v0.9.0)

---
updated-dependencies:
- dependency-name: salsa20
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* *: Bump pnet to v0.22

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Max Inden <mail@max-inden.de>

)

Require `NetworkBehaviourAction::{DialPeer,DialAddress}` to contain a
`ProtocolsHandler`. This allows a behaviour to attach custom state to its
handler. The behaviour would no longer need to track this state separately
during connection establishment, thus reducing state required in a behaviour.
E.g. in the case of `libp2p-kad` the behaviour can include a `GetRecord` request
in its handler, or e.g. in the case of `libp2p-request-response` the behaviour
can include the first request in the handler.

Return `ProtocolsHandler` on connection error and close. This allows a behaviour
to extract its custom state previously included in the handler on connection
failure and connection closing. E.g. in the case of `libp2p-kad` the behaviour
could extract the attached `GetRecord` from the handler of the failed connection
and then start another connection attempt with a new handler with the same
`GetRecord` or bubble up an error to the user.

Co-authored-by: Thomas Eizinger <thomas@eizinger.io>

Co-authored-by: Max Inden <mail@max-inden.de>

Co-authored-by: Max Inden <mail@max-inden.de>

Implement the libp2p rendezvous protocol.

> A lightweight mechanism for generalized peer discovery. It can be used for
bootstrap purposes, real time peer discovery, application specific routing, and
so on.

Co-authored-by: rishflab <rishflab@hotmail.com>
Co-authored-by: Daniel Karzel <daniel@comit.network>

Co-authored-by: Max Inden <mail@max-inden.de>

…bp2p#2219)

Probability for a Kademlia query to return in less than 100 milliseconds
is low, thus increasing the lower bucket to improve accuracy within the
higher ranges.

Expose whether closed connection was a Dialer or Listener.

Co-authored-by: Max Inden <mail@max-inden.de>

Co-authored-by: Max Inden <mail@max-inden.de>