Don't log error on server shutdown
This is pointless:
{"level":"error","time":"2024-06-26T03:15:30.586Z","msg":"Error handling a connection","mod_name":"agentk2kas_tunnel","error":"Send(descriptor): EOF","agent_id":123}This is pointless:
{"level":"error","time":"2024-06-26T03:15:30.586Z","msg":"Error handling a connection","mod_name":"agentk2kas_tunnel","error":"Send(descriptor): EOF","agent_id":123}