【192.168.6.202主机】
root@shine-genvict:~# ./udp_share 2222
You can recv and send messages.
Send format:ip port msg
192.168.6.211 1111 hello!
Send format:ip port msg
==>[192.168.6.211:1111]msg:hi!

【192.168.6.211主机】
root@shine-genvict:~# ./udp_share 1111
You can recv and send messages.
Send format:ip port msg
==>[192.168.6.202:2222]msg:hello!
192.168.6.202 2222 hi!
Send format:ip port msg