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Handle Dovecot's periodic IDLE notification messages ("OK Still here").

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These messages show up at an interval controlled by Dovecot's
imap_idle_notify_interval setting, which defaults to 2 minutes.
These messages were causing the IDLE loop to exit prematurely
because it looks like a notification response from the server.
This commit is contained in:
Todd Mortimer 2020-04-18 19:48:25 -04:00
parent 1b7ba0b0b1
commit 746bdfe6b9
1 changed files with 19 additions and 9 deletions
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14
src/extensions/idle.rs
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@ -93,16 +93,26 @@ impl<'a, T: Read + Write + 'a> Handle<'a, T> {
/// This is necessary so that we can keep using the inner `Session` in `wait_keepalive`.
fn wait_inner(&mut self) -> Result<()> {
let mut v = Vec::new();
loop {
match self.session.readline(&mut v).map(|_| ()) {
Err(Error::Io(ref e))
if e.kind() == io::ErrorKind::TimedOut || e.kind() == io::ErrorKind::WouldBlock =>
if e.kind() == io::ErrorKind::TimedOut
|| e.kind() == io::ErrorKind::WouldBlock =>
{
// we need to refresh the IDLE connection
self.terminate()?;
self.init()?;
self.wait_inner()
return self.wait_inner();
}
r => r,
}?;
// Handle Dovecot's imap_idle_notify_interval message
if v.eq_ignore_ascii_case(b"* OK Still here\r\n") {
v.clear();
} else {
break Ok(());
}
}
}