refactor(quic): rewrite quic using quinn

Rewrite quic using quinn instead of quinn-proto. libp2p-quic::endpoint::Driver is eliminated (and that hard quinn-proto machinery). Also:
- ECN bits are handled
- Support Generic Send Offload (GSO)

Pull-Request: #3454.

Cargo.toml

@@ -83,7 +83,7 @@ libp2p-perf = { version = "0.2.0", path = "protocols/perf" }
 libp2p-ping = { version = "0.43.0", path = "protocols/ping" }
 libp2p-plaintext = { version = "0.40.0", path = "transports/plaintext" }
 libp2p-pnet = { version = "0.23.0", path = "transports/pnet" }
-libp2p-quic = { version = "0.8.0-alpha", path = "transports/quic" }
+libp2p-quic = { version = "0.9.0-alpha", path = "transports/quic" }
 libp2p-relay = { version = "0.16.1", path = "protocols/relay" }
 libp2p-rendezvous = { version = "0.13.0", path = "protocols/rendezvous" }
 libp2p-request-response = { version = "0.25.1", path = "protocols/request-response" }

transports/quic/CHANGELOG.md

@@ -1,3 +1,10 @@
+## 0.9.0-alpha - unreleased
+
+- Use `quinn` instead of `quinn-proto`.
+  See [PR 3454].
+
+[PR 3454]: https://github.com/libp2p/rust-libp2p/pull/3454
+
 ## 0.8.0-alpha
 
 - Raise MSRV to 1.65.

transports/quic/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "libp2p-quic"
-version = "0.8.0-alpha"
+version = "0.9.0-alpha"
 authors = ["Parity Technologies <[email protected]>"]
 edition = "2021"
 rust-version = { workspace = true }
@@ -19,15 +19,15 @@ libp2p-tls = { workspace = true }
 libp2p-identity = { workspace = true }
 log = "0.4"
 parking_lot = "0.12.0"
-quinn-proto = { version = "0.10.1", default-features = false, features = ["tls-rustls"] }
+quinn = { version = "0.10.1", default-features = false, features = ["tls-rustls", "futures-io"] }
 rand = "0.8.5"
 rustls = { version = "0.21.2", default-features = false }
 thiserror = "1.0.44"
 tokio = { version = "1.29.1", default-features = false, features = ["net", "rt", "time"], optional = true }
 
 [features]
-tokio = ["dep:tokio", "if-watch/tokio"]
-async-std = ["dep:async-std", "if-watch/smol"]
+tokio = ["dep:tokio", "if-watch/tokio", "quinn/runtime-tokio"]
+async-std = ["dep:async-std", "if-watch/smol", "quinn/runtime-async-std"]
 
 # Passing arguments to the docsrs builder in order to properly document cfg's.
 # More information: https://docs.rs/about/builds#cross-compiling

transports/quic/src/config.rs

@@ -0,0 +1,142 @@
+// Copyright 2017-2020 Parity Technologies (UK) Ltd.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+use quinn::VarInt;
+use std::{sync::Arc, time::Duration};
+
+/// Config for the transport.
+#[derive(Clone)]
+pub struct Config {
+    /// Timeout for the initial handshake when establishing a connection.
+    /// The actual timeout is the minimum of this and the [`Config::max_idle_timeout`].
+    pub handshake_timeout: Duration,
+    /// Maximum duration of inactivity in ms to accept before timing out the connection.
+    pub max_idle_timeout: u32,
+    /// Period of inactivity before sending a keep-alive packet.
+    /// Must be set lower than the idle_timeout of both
+    /// peers to be effective.
+    ///
+    /// See [`quinn::TransportConfig::keep_alive_interval`] for more
+    /// info.
+    pub keep_alive_interval: Duration,
+    /// Maximum number of incoming bidirectional streams that may be open
+    /// concurrently by the remote peer.
+    pub max_concurrent_stream_limit: u32,
+
+    /// Max unacknowledged data in bytes that may be send on a single stream.
+    pub max_stream_data: u32,
+
+    /// Max unacknowledged data in bytes that may be send in total on all streams
+    /// of a connection.
+    pub max_connection_data: u32,
+
+    /// Support QUIC version draft-29 for dialing and listening.
+    ///
+    /// Per default only QUIC Version 1 / [`libp2p_core::multiaddr::Protocol::QuicV1`]
+    /// is supported.
+    ///
+    /// If support for draft-29 is enabled servers support draft-29 and version 1 on all
+    /// QUIC listening addresses.
+    /// As client the version is chosen based on the remote's address.
+    pub support_draft_29: bool,
+
+    /// TLS client config for the inner [`quinn::ClientConfig`].
+    client_tls_config: Arc<rustls::ClientConfig>,
+    /// TLS server config for the inner [`quinn::ServerConfig`].
+    server_tls_config: Arc<rustls::ServerConfig>,
+}
+
+impl Config {
+    /// Creates a new configuration object with default values.
+    pub fn new(keypair: &libp2p_identity::Keypair) -> Self {
+        let client_tls_config = Arc::new(libp2p_tls::make_client_config(keypair, None).unwrap());
+        let server_tls_config = Arc::new(libp2p_tls::make_server_config(keypair).unwrap());
+        Self {
+            client_tls_config,
+            server_tls_config,
+            support_draft_29: false,
+            handshake_timeout: Duration::from_secs(5),
+            max_idle_timeout: 30 * 1000,
+            max_concurrent_stream_limit: 256,
+            keep_alive_interval: Duration::from_secs(15),
+            max_connection_data: 15_000_000,
+
+            // Ensure that one stream is not consuming the whole connection.
+            max_stream_data: 10_000_000,
+        }
+    }
+}
+
+/// Represents the inner configuration for [`quinn`].
+#[derive(Debug, Clone)]
+pub(crate) struct QuinnConfig {
+    pub(crate) client_config: quinn::ClientConfig,
+    pub(crate) server_config: quinn::ServerConfig,
+    pub(crate) endpoint_config: quinn::EndpointConfig,
+}
+
+impl From<Config> for QuinnConfig {
+    fn from(config: Config) -> QuinnConfig {
+        let Config {
+            client_tls_config,
+            server_tls_config,
+            max_idle_timeout,
+            max_concurrent_stream_limit,
+            keep_alive_interval,
+            max_connection_data,
+            max_stream_data,
+            support_draft_29,
+            handshake_timeout: _,
+        } = config;
+        let mut transport = quinn::TransportConfig::default();
+        // Disable uni-directional streams.
+        transport.max_concurrent_uni_streams(0u32.into());
+        transport.max_concurrent_bidi_streams(max_concurrent_stream_limit.into());
+        // Disable datagrams.
+        transport.datagram_receive_buffer_size(None);
+        transport.keep_alive_interval(Some(keep_alive_interval));
+        transport.max_idle_timeout(Some(VarInt::from_u32(max_idle_timeout).into()));
+        transport.allow_spin(false);
+        transport.stream_receive_window(max_stream_data.into());
+        transport.receive_window(max_connection_data.into());
+        let transport = Arc::new(transport);
+
+        let mut server_config = quinn::ServerConfig::with_crypto(server_tls_config);
+        server_config.transport = Arc::clone(&transport);
+        // Disables connection migration.
+        // Long-term this should be enabled, however we then need to handle address change
+        // on connections in the `Connection`.
+        server_config.migration(false);
+
+        let mut client_config = quinn::ClientConfig::new(client_tls_config);
+        client_config.transport_config(transport);
+
+        let mut endpoint_config = quinn::EndpointConfig::default();
+        if !support_draft_29 {
+            endpoint_config.supported_versions(vec![1]);
+        }
+
+        QuinnConfig {
+            client_config,
+            server_config,
+            endpoint_config,
+        }
+    }
+}