received 0 : client 1: hello
received 0 : client 2: holla
received 0 : client 3: hulli
received 0 : server: client 1 just arrived
received 0 : server: client 1 just left
received 0 : server: client 2 just arrived
received 0 : server: client 2 just left
received 0 : server: client 3 just arrived
received 0 : server: client 3 just left