Such as title, demo program certainly no problem, the local implementation of UDP server and client, random port can send and receive normally,

After the upload server to the network, only when the client with a fixed port to send, the service side to receive success, but returned from the server, the client has been get,

TCP protocol is normal, there should be problems setting up the company local area network (LAN), I am not a network management cannot set routing, there is no other way, please

CodePudding user response:

Port is blocked, no packets to come over, do not set the router doesn't work,

CodePudding user response:

There should be use the UDP protocol software, the company is unlikely to be all, I wonder whether the use of the individual port can be communication each other, just don't know what can test the software