/**
* Start transport provider
*
* @param \Thruway\Peer\ClientInterface $client
* @param \React\EventLoop\LoopInterface $loop
*/
public function startTransportProvider(ClientInterface $client, LoopInterface $loop)
{
Logger::info($this, "Starting Transport");
$this->client = $client;
$this->loop = $loop;
$this->connector = new Factory($this->loop);
$this->connector->__invoke($this->URL, ['wamp.2.json'])->then(function (WebSocket $conn) {
Logger::info($this, "Pawl has connected");
$transport = new PawlTransport($conn, $this->loop);
$transport->setSerializer(new JsonSerializer());
$this->client->onOpen($transport);
$conn->on('message', function ($msg) use($transport) {
Logger::debug($this, "Received: {$msg}");
try {
$this->client->onMessage($transport, $transport->getSerializer()->deserialize($msg));
} catch (DeserializationException $e) {
Logger::warning($this, "Deserialization exception occurred.");
} catch (\Exception $e) {
Logger::warning($this, "Exception occurred during onMessage: " . $e->getMessage());
}
});
$conn->on('close', function ($conn) {
Logger::info($this, "Pawl has closed");
$this->client->onClose('close');
});
$conn->on('pong', function ($frame, $ws) use($transport) {
$transport->onPong($frame, $ws);
});
}, function ($e) {
$this->client->onClose('unreachable');
Logger::info($this, "Could not connect: {$e->getMessage()}");
// $this->loop->stop();
});
}
/**
* process unregister
*
* @param \Thruway\ClientSession $session
* @param string $Uri
* @throws \Exception
* @return \React\Promise\Promise|false
*/
public function unregister(ClientSession $session, $Uri)
{
// TODO: maybe add an option to wait for pending calls to finish
$registration = null;
foreach ($this->registrations as $k => $r) {
if (isset($r['procedure_name'])) {
if ($r['procedure_name'] == $Uri) {
$registration =& $this->registrations[$k];
break;
}
}
}
if ($registration === null) {
Logger::warning($this, "registration not found: " . $Uri);
return false;
}
// we remove the callback from the client here
// because we don't want the client to respond to any more calls
$registration['callback'] = null;
$futureResult = new Deferred();
if (!isset($registration["registration_id"])) {
// this would happen if the registration was never acknowledged by the router
// we should remove the registration and resolve any pending deferreds
Logger::error($this, "Registration ID is not set while attempting to unregister " . $Uri);
// reject the pending registration
$registration['futureResult']->reject();
// TODO: need to figure out what to do in this off chance
// We should still probably return a promise here that just rejects
// there is an issue with the pending registration too that
// the router may have a "REGISTERED" in transit and may still think that is
// good to go - so maybe still send the unregister?
}
$requestId = Session::getUniqueId();
// save the request id so we can find this in the registration
// list to call the deferred and remove it from the list
$registration['unregister_request_id'] = $requestId;
$registration['unregister_deferred'] = $futureResult;
$unregisterMsg = new UnregisterMessage($requestId, $registration['registration_id']);
$session->sendMessage($unregisterMsg);
return $futureResult->promise();
}
/**
* Process All Messages if the session has been authenticated
*
* @param \Thruway\Session $session
* @param \Thruway\Message\Message $msg
*/
private function processAuthenticated(Session $session, Message $msg)
{
// authorization stuff here
if ($msg instanceof ActionMessageInterface) {
if (!$this->getAuthorizationManager()->isAuthorizedTo($session, $msg)) {
Logger::alert($this, "Permission denied: " . $msg->getActionName() . " " . $msg->getUri() . " for " . $session->getAuthenticationDetails()->getAuthId());
$session->sendMessage(ErrorMessage::createErrorMessageFromMessage($msg, "wamp.error.not_authorized"));
return;
}
}
$handled = false;
foreach ($this->roles as $role) {
if ($role->handlesMessage($msg)) {
$role->onMessage($session, $msg);
$handled = true;
break;
}
}
if (!$handled) {
Logger::warning($this, "Unhandled message sent to \"{$this->getRealmName()}\"");
}
}
/**
* @param Session $session
* @param ErrorMessage $msg
*/
private function processInterruptError(Session $session, ErrorMessage $msg)
{
$call = isset($this->callInterruptIndex[$msg->getRequestId()]) ? $this->callInterruptIndex[$msg->getRequestId()] : null;
if (!$call) {
Logger::warning($this, "Interrupt error with no corresponding interrupt index");
return;
}
$errorMsgToCaller = ErrorMessage::createErrorMessageFromMessage($call->getCancelMessage());
$errorMsgToCaller->setErrorURI($msg->getErrorURI());
$callerSession = $call->getCallerSession();
$callerSession->sendMessage($errorMsgToCaller);
$call->getRegistration()->removeCall($call);
$this->removeCall($call);
}
/**
* processCancel processes cancel message from the caller.
* Return true if the Call should be removed from active calls
*
* @param Session $session
* @param CancelMessage $msg
* @return bool
*/
public function processCancel(Session $session, CancelMessage $msg)
{
if ($this->getCallerSession() !== $session) {
Logger::warning($this, "session attempted to cancel call they did not own.");
return false;
}
if ($this->getCalleeSession() === null) {
// this call has not been sent to a callee yet (it is in a queue)
// we can just kill it and say it was canceled
$errorMsg = ErrorMessage::createErrorMessageFromMessage($msg, "wamp.error.canceled");
$details = $errorMsg->getDetails() ?: (object) [];
$details->_thruway_removed_from_queue = true;
$session->sendMessage($errorMsg);
return true;
}
$details = (object) [];
if ($this->getCalleeSession()->getHelloMessage() instanceof HelloMessage) {
$details = $this->getCalleeSession()->getHelloMessage()->getDetails();
}
$calleeSupportsCancel = false;
if (isset($details->roles->callee->features->call_canceling) && is_scalar($details->roles->callee->features->call_canceling)) {
$calleeSupportsCancel = (bool) $details->roles->callee->features->call_canceling;
}
if (!$calleeSupportsCancel) {
$errorMsg = ErrorMessage::createErrorMessageFromMessage($msg);
$errorMsg->setErrorURI('wamp.error.not_supported');
$session->sendMessage($errorMsg);
return false;
}
$this->setCancelMessage($msg);
$this->canceling = true;
$calleeSession = $this->getCalleeSession();
$interruptMessage = new InterruptMessage($this->getInvocationRequestId(), (object) []);
$calleeSession->sendMessage($interruptMessage);
$this->setInterruptMessage($interruptMessage);
if (isset($msg->getOptions()->mode) && is_scalar($msg->getOptions()->mode) && $msg->getOptions()->mode == "killnowait") {
$errorMsg = ErrorMessage::createErrorMessageFromMessage($msg, "wamp.error.canceled");
$session->sendMessage($errorMsg);
return true;
}
return false;
}
/**
* process call
*
* @param \Thruway\ClientSession $session
* @param string $procedureName
* @param mixed $arguments
* @param mixed $argumentsKw
* @param mixed $options
* @return \React\Promise\Promise
*/
public function call(ClientSession $session, $procedureName, $arguments = null, $argumentsKw = null, $options = null)
{
//This promise gets resolved in Caller::processResult
$futureResult = new Deferred();
$requestId = Session::getUniqueId();
$this->callRequests[$requestId] = ["procedure_name" => $procedureName, "future_result" => $futureResult];
if (!(is_array($options) && Message::isAssoc($options))) {
if ($options !== null) {
Logger::warning($this, "Options don't appear to be the correct type.");
}
$options = new \stdClass();
}
$callMsg = new CallMessage($requestId, $options, $procedureName, $arguments, $argumentsKw);
$session->sendMessage($callMsg);
return $futureResult->promise();
}
