/**
* @inheritDoc
*/
public function __invoke(ObservableInterface $observable, ObserverInterface $observer, SchedulerInterface $scheduler = null)
{
return $observable->subscribe(new CallbackObserver(function ($data) use($observer) {
while (strlen($data) > 0) {
$frame = $this->frame;
$frame->addBuffer($data);
$data = "";
if ($frame->isCoalesced()) {
$result = $this->validator->validateFrame($frame, $this->previousFrame);
if (0 !== $result) {
$observer->onError(new WebsocketErrorException($result));
}
$data = $frame->extractOverflow();
$frame->unMaskPayload();
$observer->onNext($frame);
if ($frame->getOpcode() < 3) {
$this->previousFrame = $this->frame;
if ($frame->isFinal()) {
$this->previousFrame = null;
}
}
$this->frame = new Frame();
}
}
}, [$observer, 'onError'], [$observer, 'onCompleted']));
}
public function onData($data, ContextInterface $context)
{
$overflow = '';
$message = $context->getMessage() ?: $context->setMessage($this->newMessage());
$frame = $context->getFrame() ?: $context->setFrame($this->newFrame());
$frame->addBuffer($data);
if ($frame->isCoalesced()) {
$frameCount = $message->count();
$prevFrame = $frameCount > 0 ? $message[$frameCount - 1] : null;
$frameStatus = $this->validator->validateFrame($frame, $prevFrame);
if (0 !== $frameStatus) {
return $context->onClose($frameStatus);
}
$opcode = $frame->getOpcode();
if ($opcode > 2) {
switch ($opcode) {
case Frame::OP_PING:
$context->onPing($frame);
break;
case Frame::OP_PONG:
$context->onPong($frame);
break;
}
$overflow = $frame->extractOverflow();
$context->setFrame(null);
if (strlen($overflow) > 0) {
$this->onData($overflow, $context);
}
return;
}
$overflow = $frame->extractOverflow();
$frame->unMaskPayload();
$message->addFrame($frame);
$context->setFrame(null);
}
if ($message->isCoalesced()) {
$msgCheck = $this->validator->checkMessage($message);
if (true !== $msgCheck) {
return $context->onClose($msgCheck);
}
$context->onMessage($message);
$context->setMessage(null);
}
if (strlen($overflow) > 0) {
$this->onData($overflow, $context);
}
}
