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Winsock ~ Creating an UDP Listener (Multiple vs 1 socket)


Unlike TCP, UDP is connection-less, and as such you don't need to create separate sockets for each party. One UDP socket can handle everything. Bind it to a local IP/Port and call WSARecvFrom() once, and when it reports data to your IOCP you can process the data as needed (if another thread if needed) and then call WSARecvFrom() again. Each time new data arrives, you have to look at the reported lpFrom address to know the IP/Port of the sender. And yes, you can use the same UDP socket for sending data to each sender when needed.


Categories : C++

Related to : Winsock ~ Creating an UDP Listener (Multiple vs 1 socket)
What are the different between VMCI socket, Berkeley Socket and winsock?
Berkeley Sockets is the original TCP/IP API and is found in Unix-based operating systems. Winsock is a source and binary API/ABI which was created to bring order out of the confusion of multi-vendor TCP/IP on Windows in the 1990s before Microsoft clued up. It is found on Windows. VCMI is for communicating between VMWare hosts and guests, or between guests.

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Getting error code when creating a socket in Linux
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C++ Server socket with multiple connections
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