[Apollo 1.6] MQTT via Websocket client stucks after connect

I try to craft a client which sends MQTT messages as binary Websocket frames. The client is based on Java/Paho for the MQTT part and on Netty 4.0.14 for the Websocket part. The server side is an unmodified Apollo 1.6. Upon a success

Re: [Apollo 1.6] Websocket connection closed after 5 seconds

Hello Vatsal, sorry for may long delay of reply. It seems as if I was mistaken. At least, I tracked down my issue to a different kind of problem. Therefore, I will delete my current post. However, thank You very much for Your reply and Your proposal to help. -- View this message in context:

[Apollo 1.6] Websocket connection closed after 5 seconds

Using Apollo 1.6 as a Websocket server and Java-Netty 3.8 as a Websocket client with version V13 (RFC 6455 aka HyBi-17), the server closes the connection after 5 seconds (for illustration, see below). The server behaviour is independent from the client behaviour, e.g. the connection is closed rega