The PR optimizes polling of the listeners in the TCP transport by using `futures::SelectAll` instead of storing them in a queue and polling manually.
Resolves#2781.
`libp2p_tcp::Transport::remove_listener` previously removed the first listener that *did not match* the provided `ListenerId`. This small fix brings it inline with other implementations.
The trick with this one is to use `futures::Either` everywhere where we may wrap something that implements any of the `futures` traits. This includes the output of `EitherFuture` itself. We also need to implement `StreamMuxer` on `future::Either` because `StreamMuxer`s may be the the `Output` of `InboundUpgrade`.
Scenario: rust-libp2p node A dials rust-libp2p node B. B listens on a QUIC address. A dials B via the `libp2p-quic` `Transport` wrapped in a `libp2p-dns` `Transport`.
Note that `libp2p-dns` in itself is not relevant here. Only the fact that `libp2p-dns` delays a dial is relevant, i.e. that it first does other async stuff (DNS lookup) before creating the QUIC dial. In fact, dialing an IP address through the DNS `Transport` where no DNS resolution is needed triggers the below just fine.
1. A calls `Swarm::dial` which creates a `libp2p-dns` dial.
2. That dial is spawned onto the connection `Pool`, thus starting the DNS resolution.
3. A continuously calls `Swarm::poll`.
4. `libp2p-quic` `Transport::poll` is called, finding no dialers in `self.dialer` given that the spawned dial is still only resolving the DNS address.
5. On the spawned connection task:
1. The DNS resolution finishes.
2. Thus calling `Transport::dial` on `libp1p-quic` (note that the DNS dial has a clone of the QUIC `Transport` wrapped in an `Arc<Mutex<_>>`).
3. That adds a dialer to `self.dialer`. Note that there are no listeners, i.e. `Swarm::listen_on` was never called.
4. `DialerState::new_dial` is called which adds a message to `self.pending_dials` and wakes `self.waker`. Given that on the last `Transport::poll` there was no `self.dialer`, that waker is empty.
Result: The message is stuck in the `DialerState::pending_dials`. The message is never send to the endpoint driver. The dial never succeeds.
This commit fixes the above, waking the `<Quic as Transport>:poll` method.
As the name implies, `LegacyConfig` allows users to interact with older versions of the noise protocol. These are not interoperable and we've been supporting them for a long time now. Hopefully, users have migrated away from it since. To not directly break them, we officially deprecate now without a replacement.
Identify multiaddress with `/quic` (draft 29) as QUIC address in case `support_draft_29` is `true`.
Without this patch the Rust punchr client would discard any QUIC addresses with `/quic` in its `Transport::address_translation`. Thus `/quic` based observed addresses from `libp2p-identify` would not be added to the local set of external addresses and thus QUIC would not be available as a transport for hole punching.
For the last [two years](https://github.com/libp2p/rust-libp2p/blob/master/CHANGELOG.md#version-0190-2020-05-18), we have been carrying around a non-compliant implementation of the noise protocol for libp2p. It is time to follow through on the announcement in that changelog entry and deprecate it. Users should use the spec compliant implementation instead.
1. This will reduce the maintenance effort of our codebase.
2. We will improve compile-times because we no longer need to depend on `libsodium` to test cryptography that is only part of the non-compliant implementation.
3. It will simplify usage of `rust-libp2p` because users cannot accidentally choose the wrong implementation.
As I do frequently, I corrected for the latest clippy warnings. This will make sure the CI won't complain in the future. We could automate this btw and maybe run the nightly version of clippy.
Add support for QUIC draft-29 / the `quic` codepoint. This enables both dialing and listening on `quic` addresses.
The motivation for adding support is to allow users to connect to old go-libp2p nodes that don't support the `quic-v1` codepoint.
**Per default support is disabled.**
- Only send `STOP_SENDING` on a stream when dropping it if the remote did not finish the stream yet.
- Only call `quinn_proto::SendStream::finish` once. (A second call to it will always fail. Though I don't think this was the issue in #3144.)
- Add tests for reading and writing to streams after the remote dropped. Also adds a smoke test for backpressure.
Fixes#3144.
In case support for e.g. RSA keys is disabled at compile-time, we will now print a better error message. For example:
> Failed to dial Some(PeerId("QmcZf59bWwK5XFi76CZX8cbJ4BhTzzA3gU1ZjYZcYW3dwt")): Failed to negotiate transport protocol(s): [(/dnsaddr/bootstrap.libp2p.io/p2p/QmcZf59bWwK5XFi76CZX8cbJ4BhTzzA3gU1ZjYZcYW3dwt): : Handshake failed: Handshake failed: Invalid public key: Key decoding error: RSA keys are unsupported)]
Fixes#2971.
We refactor our continuous integration workflow with the following goals in mind:
- Run as few jobs as possible
- Have the jobs finish as fast as possible
- Have the jobs redo as little work as possible
There are only so many jobs that GitHub Actions will run in parallel.
Thus, it makes sense to not create massive matrices but instead group
things together meaningfully.
The new `test` job will:
- Run once for each crate
- Ensure that the crate compiles on its specified MSRV
- Ensure that the tests pass
- Ensure that there are no semver violations
This is an improvement to before because we are running all of these
in parallel which speeds up execution and highlights more errors at
once. Previously, tests run later in the pipeline would not get run
at all until you make sure the "first" one passes.
We also previously did not verify the MSRV of each crate, making the
setting in the `Cargo.toml` rather pointless.
The new `cross` job supersedes the existing `wasm` job.
This is an improvement because we now also compile the crate for
windows and MacOS. Something that wasn't checked before.
We assume that checking MSRV and the tests under Linux is good enough.
Hence, this job only checks for compile-errors.
The new `feature_matrix` ensures we compile correctly with certain feature combinations.
`libp2p` exposes a fair few feature-flags. Some of the combinations
are worth checking independently. For the moment, this concerns only
the executor related transports together with the executor flags but
this list can easily be extended.
The new `clippy` job runs for `stable` and `beta` rust.
Clippy gets continuously extended with new lints. Up until now, we would only
learn about those as soon as a new version of Rust is released and CI would
run the new lints. This leads to unrelated failures in CI. Running clippy on with `beta`
Rust gives us a heads-up of 6 weeks before these lints land on stable.
Fixes#2951.
Previously, we would always run `IfWatcher`, even if we were only listening on a specific interface. This patch fixes this behaviour and aligns it with how `libp2p-quic` operates.
Previously, the executor for connection tasks silently defaulted to a `futures::executor::ThreadPool`. This causes issues such as https://github.com/libp2p/rust-libp2p/issues/2230.
With this patch, we force the user to choose, which executor they want to run the connection tasks on which results in overall simpler API with less footguns.
Closes#3068.
Update to `if-watch` version 3.0.0 and pass through features, such that `libp2p-tcp/async-io` selects `if-watch/smol` and `libp2p-tcp/tokio` brings in `if-watch/tokio`.
The mDNS part is already done in #3096.
