mqttnet's bug on linux Networking via 4G

[cuican6]

Describe the bug

Send a QoS 0 message to the server. When the connection with the server is disconnected, the disconnection event cannot be triggered.

By reading the source code, I found that the message sent by qos0 will refresh the keepalive timestamp. I think it is caused by this situation

Which project is your bug related to?

• Client thank you sir.

[cuican6]

hello,sir,sometimes,send message with Qos0，if net is err,can't trigger disconnect,becuase send message with qos0 don't wait response form server, so i think ,send message qos0 don't fresh keepalive timestamp.or, if user don't need fresh keepalive timestamp ,can edit config.

[chkr1011]

Please try the latest version of the library. We fixed a freeze while connecting. If the issue persists please reopen this ticket.