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1 changed files with 4 additions and 3 deletions
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@ -90,12 +90,12 @@ async fn connection_writer_loop(
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let mut shutdown = shutdown.fuse();
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loop { // 2
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select! {
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msg = messages.next().fuse() => match msg {
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msg = messages.next().fuse() => match msg { // 3
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Some(msg) => stream.write_all(msg.as_bytes()).await?,
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None => break,
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},
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void = shutdown.next().fuse() => match void {
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Some(void) => match void {}, // 3
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Some(void) => match void {}, // 4
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None => break,
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}
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}
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@ -106,7 +106,8 @@ async fn connection_writer_loop(
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1. We add shutdown channel as an argument.
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2. Because of `select`, we can't use a `while let` loop, so we desugar it further into a `loop`.
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3. In the shutdown case we use `match void {}` as a statically-checked `unreachable!()`.
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3. Function fuse() is used to turn any `Stream` into a `FusedStream`. This is used for fusing a stream such that poll_next will never again be called once it has finished.
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4. In the shutdown case we use `match void {}` as a statically-checked `unreachable!()`.
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Another problem is that between the moment we detect disconnection in `connection_writer_loop` and the moment when we actually remove the peer from the `peers` map, new messages might be pushed into the peer's channel.
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To not lose these messages completely, we'll return the messages channel back to the broker.
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