How to debug UDP port

adopt nc command

Server side

 [[email protected] bin]#  nc -ul 8907

 hello server

ok client

client

[[email protected] ~]#nc -u 192.168.2.100 8907

hello server

ok client

Preparation instructions ：

Linux In the environment , without nc Orders can be made through yum install nc or apt-get install nc Installation

If it is aliyun server , You need to use the cloud platform console , Opening UDP port