/**
* Read the next frame.
*
* @recoil-coroutine
*
* @return IncomingFrame The value read from the channel.
* @throws ChannelClosedException The channel has been closed.
*/
public function read() : Generator
{
if ($this->stream === null) {
throw ChannelClosedException::channelClosed();
}
$buffer = '';
$required = 0;
try {
feed:
$frame = $this->parser->feed($buffer, $required);
} catch (RecoilAmqpException $e) {
assert(Debug::dumpException('#' . (int) $this->stream, $e));
throw $e;
}
if ($frame === null) {
// @todo handle stream close and throw channel closed exception
$buffer = (yield Recoil::read($this->stream, $required));
if ($buffer === '') {
\fclose($this->stream);
$this->stream = null;
throw ChannelClosedException::channelClosed();
}
assert(Debug::dumpIncomingHex('#' . (int) $this->stream, $buffer));
goto feed;
}
assert(Debug::dumpIncomingFrame('#' . (int) $this->stream, $frame));
return $frame;
}
private function readLoop() : Generator
{
try {
while ($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));
}
}
