Netopeer2 Server hanged that netopeer2-cli can not connected

[DiepHieu99]

Testing for a long time in a System, I've discovered Netopeer2-server locked rpc session ( this session receive and process other rpcs) that make netopeer2-client (in other devices and localhost can not connected) When kill all netopeer2 process and run again, it's back to normal.

The Netopeer2 version I use is 1.1.70