Can we have same port for two UDP applications

[MuhammadUsman]

Hi

I am writing a simple client server program in c# using sockets over UDP. Can I use same port for both the client and server to send and receive data (like in TCP) . I am trying to do the following but its not working.

sockListener = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

sockListener.Bind(ipEHost); // port 4050

when i do it on both server and client, an exception is thrown that only one app can open a port. but when i specify a different port on client or server (eg 4051) then it works fine.(client sends on 4051 and listens on 4050 and server does the otheway) What am i doing wrong to make both of them communicate over the same port.

Besides what calls do I need to make for sending and receiving Now I am using SendTo and Receive and it works fine when i specify different ports.

After initializing socket shall i use bind call for the server and the connect call for client? Whats the difference between connecting to local or remote endpoint with respect to UDP

Usman