/**
* Create an exception that indicates an unexpected closure of the
* connection to the AMQP broker.
*
* @param ConnectionOptions $options The options used when establishing the connection.
* @param Exception|null $previous The exception that caused this exception, if any.
*/
public static function closedUnexpectedly(ConnectionOptions $options, Exception $previous = null) : SingleConnectionException
{
return new self($options, \sprintf('The AMQP connection with broker [%s:%d] was closed unexpectedly.', $options->host(), $options->port()), $previous);
}
/**
* Determine the connection timeout to used based on the connection options
* and PHP settings.
*/
private function connectionTimeout(ConnectionOptions $options) : float
{
$connectionTimeout = $options->advancedConnectionOptions()->connectionTimeout();
if ($connectionTimeout !== null) {
return $connectionTimeout;
}
$connectionTimeout = ini_get('default_socket_timeout');
if ($connectionTimeout !== false) {
return (double) $connectionTimeout;
}
return self::DEFAULT_CONNECTION_TIMEOUT;
}
/**
* Perform the "open" phase of the handshake.
*
* @recoil-coroutine
*
* @param DuplexChannel $frames A channel over which frames are sent
* and received.
* @param ConnectionOptions $options The options used when establishing
* the connection.
*/
private function open(DuplexChannel $frames, ConnectionOptions $options) : Generator
{
(yield $frames->write(ConnectionOpenFrame::create($options->vhost())));
try {
$frame = (yield $frames->read());
} catch (ChannelClosedException $e) {
throw SingleConnectionException::authorizationFailed($options, $e);
}
if ($frame instanceof ConnectionCloseFrame) {
if ($frame->replyCode === Constants::NOT_ALLOWED && $frame->classId === ConnectionOpenFrame::METHOD_ID >> 16 && $frame->methodId === (ConnectionOpenFrame::METHOD_ID & 0xff)) {
throw SingleConnectionException::authorizationFailed($options);
}
throw SingleConnectionException::closedUnexpectedly($options);
} elseif (!$frame instanceof ConnectionOpenOkFrame) {
throw ProtocolException::unexpectedFrame($frame, 'expected ' . ConnectionOpenOkFrame::class);
}
}