server does not disconnect player if that player has dropped connection or quit the game. also some reliable messages got dropped and does not receive some times.

[BijianWu]

Description and Explanation

Sometimes when the client disconnects, the server does not know about it! no Disconnect callback got triggered on the server.
Sometimes when the Server or Client sends a message to each other, sometimes it does not receive on their end. this does not receive message issue is happening often during starting the game with low network traffic, which just bunch of handsake message and login message. etc.

For Issues

(Unity based server, Unity version 2019.2.4f1, Dark rift version is 2.7.0.0 free version, hosted in PlayFab. it happens sometimes when game server is hosted, client is playing the game in Andrroid Phone, tested with lots of different Android Phones)

[JamJar00]

Correct me if I'm wrong here, we narrowed down the missing messages to NoDelay being set to false on the listener, meaning small reliable mesasges weren't being sent from the TCP socket (they were waiting for more data).

So the only issue here is that disconnections are not always being detected correct?

Do you have some form of constant, reliable traffic between client/server? TCP sockets only report disconnections (and hence DR only sees the disconnection) if 1. the Disconnect method is explicitly called, 2. a message is sent and not acknowledged by the remote. Therefore conenctions failures will onyl be detected when you send messages.

[BijianWu]

Yeah, that was solved.
I do have client sending input to server every 30 sec, You know when I am calling ConnectInBackground in client side and pass in noDelay = true, does it have the same effect as server set noDelay to true