private function readLoop() : Generator
{
try {
while ($this->state === ConnectionState::OPEN) {
$frame = (yield $this->transport->read());
$this->heartbeatsSinceFrameReceived = 0;
if ($frame instanceof HeartbeatFrame) {
continue;
} elseif ($frame->frameChannelId > 0) {
$channelManager = $this->channels[$frame->frameChannelId] ?? null;
if ($channelManager === null) {
throw ProtocolException::unexpectedFrame($frame, \sprintf('channel #%s is closed', $frame->frameChannelId));
}
(yield $channelManager->dispatch($frame));
} elseif ($frame instanceof ConnectionCloseFrame) {
(yield $this->transport->close());
throw AmqpException::create($frame->replyText, $frame->replyCode);
} else {
throw ProtocolException::unexpectedFrame($frame, 'received on channel #0');
}
}
while ($this->state === ConnectionState::CLOSING) {
$frame = (yield $this->transport->read());
if ($frame instanceof ConnectionCloseOkFrame) {
(yield $this->transport->close());
(yield $this->onClose());
}
}
} catch (ChannelClosedException $e) {
(yield $this->onClose(SingleConnectionException::closedUnexpectedly($this->options, $e)));
} catch (Throwable $e) {
assert(Debug::dumpException('read-loop', $e));
(yield $this->onClose($e));
}
}
/**
* @recoil-coroutine
*/
public function onCloseByBroker(ChannelCloseFrame $frame) : Generator
{
$this->connectionManager->removeChannel($this->channelId);
$exception = AmqpException::create($frame->replyText, $frame->replyCode);
// The closure was triggered by a previously sent frame. Find the
// offending strand and resume it with an exception specific to this
// closure ...
if ($frame->classId && $frame->methodId) {
$sentMethod = $frame->classId << 16 | $frame->methodId;
($callers =& $this->callersBySentMethod[$sentMethod]) ?? null;
if ($callers !== null) {
foreach ($callers as $id => $waitMethod) {
$strand = $this->callers[$waitMethod][$id];
unset($this->callers[$waitMethod][$id], $this->callersBySentMethod[$sentMethod][$id], $this->callersByWaitMethod[$waitMethod][$id]);
(yield Recoil::throw($strand, $exception));
break;
}
}
}
// Acknowledge the closure ...
$frame = new ChannelCloseOkFrame();
$frame->frameChannelId = $this->channelId;
(yield $this->transport->write($frame));
// Procee to the regular on-close logic. To all remaining callers and
// listeners this is an unexpected closure ...
(yield $this->onClose(ChannelException::closedUnexpectedly($this->channelId, $exception)));
}