feat(bin): use quinn-udp crates.io release instead of git ref

`neqo-bin` has been importing `quinn-udp` as a git reference, in order to
include quinn-rs/quinn#1765. The quinn project has since
released `quinn-udp` `v0.5.0`.

This commit upgrades `neqo-bin` to use `quinn-udp` `v0.5.0`.

`quinn-udp` has dropped `sendmmsg` support in the `v0.5.0`
release (quinn-rs/quinn@ee08826).
`neqo-bin` does not (yet) use `sendmmsg`. This might change in the
future (mozilla#1693).

neqo-bin/Cargo.toml

@@ -35,7 +35,7 @@ neqo-http3 = { path = "./../neqo-http3" }
 neqo-qpack = { path = "./../neqo-qpack" }
 neqo-transport = { path = "./../neqo-transport" }
 qlog = { workspace = true }
-quinn-udp = { git = "https://github.com/quinn-rs/quinn/", rev = "a947962131aba8a6521253d03cc948b20098a2d6" }
+quinn-udp = { version = "0.5.0", default-features = false }
 regex = { version = "1.9", default-features = false, features = ["unicode-perl"] }
 tokio = { version = "1", default-features = false, features = ["net", "time", "macros", "rt", "rt-multi-thread"] }
 url = { version = "2.5", default-features = false }

neqo-bin/src/udp.rs

@@ -62,18 +62,15 @@ impl Socket {
         let transmit = Transmit {
             destination: d.destination(),
             ecn: EcnCodepoint::from_bits(Into::<u8>::into(d.tos())),
-            contents: Vec::from(d).into(),
+            contents: &d,
             segment_size: None,
             src_ip: None,
         };
 
-        let n = self.socket.try_io(Interest::WRITABLE, || {
-            self.state
-                .send((&self.socket).into(), slice::from_ref(&transmit))
+        self.socket.try_io(Interest::WRITABLE, || {
+            self.state.send((&self.socket).into(), &transmit)
         })?;
 
-        assert_eq!(n, 1, "only passed one slice");
-
         Ok(())
     }
 
@@ -189,17 +186,14 @@ mod tests {
                 IpTosDscp::Le,
                 IpTosEcn::Ect1,
             )))),
-            contents: msg.clone().into(),
+            contents: &msg,
             segment_size: Some(SEGMENT_SIZE),
             src_ip: None,
         };
         sender.writable().await?;
-        let n = sender.socket.try_io(Interest::WRITABLE, || {
-            sender
-                .state
-                .send((&sender.socket).into(), slice::from_ref(&transmit))
+        sender.socket.try_io(Interest::WRITABLE, || {
+            sender.state.send((&sender.socket).into(), &transmit)
         })?;
-        assert_eq!(n, 1, "only passed one slice");
 
         // Allow for one GSO sendmmsg to result in multiple GRO recvmmsg.
         let mut num_received = 0;