The question now is I have a program, use the udp communication, I am the service side, others is the client, and client binding IP I don't know, he is free to bind a reasonable port, this situation how can I accept the client's data, there is no other way to achieve the demand of train of thought,

CodePudding user response:

The client has been send radio fixed port with their own port information
Server accepts to fixed port radio carry out port information send this port connection

CodePudding user response:

Control of the port should be specified, otherwise can't transfer data, in addition, unknown port, through the search also not line, port range is too big,