Aerys\Websocket\Rfc6455Endpoint::onReadable PHP Method

    public function onReadable($watcherId, $socket, Rfc6455Client $client)
    {
        $data = @fread($socket, 8192);
        if ($data != "") {
            $client->lastReadAt = $this->now;
            $client->bytesRead += \strlen($data);
            $client->capacity -= \strlen($data);
            if ($client->capacity < $this->maxBytesPerMinute / 2) {
                $this->lowCapacityClients[$client->id] = $client;
                if ($client->capacity <= 0) {
                    \Amp\disable($watcherId);
                }
            }
            $frames = $client->parser->send($data);
            $client->framesRead += $frames;
            $client->framesLastSecond += $frames;
            if ($client->framesLastSecond > $this->maxFramesPerSecond / 2) {
                if ($client->framesLastSecond > $this->maxFramesPerSecond * 1.5) {
                    \Amp\disable($watcherId);
                    // aka tiny frame DoS prevention
                }
                $this->highFramesPerSecondClients[$client->id] = $client;
            }
        } elseif (!is_resource($socket) || @feof($socket)) {
            if (!$client->closedAt) {
                $client->closedAt = $this->now;
                $code = Code::ABNORMAL_CLOSE;
                $reason = "Client closed underlying TCP connection";
                resolve($this->tryAppOnClose($client->id, $code, $reason));
            } else {
                unset($this->closeTimeouts[$client->id]);
            }
            $this->unloadClient($client);
        }
    }