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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.

Categories : Sockets
Getting error code when creating a socket in Linux
errno is a thread-local global variable, defined in <errno.h>. The man page for many library functions will indicate that they return -1 on error, and set errno. You can convert an errno value to a useful string with the strerror function. In general, you should code like this: #include <stdio.h> #include <errno.h> int main(void) { int s; s = socket(...); if (s &

Categories : C
C++ Server socket with multiple connections
That's because you're deleting your thread as soon as you create it. You need to save them somewhere: std::vector<std::unique_ptr<std::thread>> threads; for (;;) { // as before threads.emplace_back(new std::thread((ClientHandler()), Connect)); }

Categories : C++
Need help to verify if this code will work on multiple server instances
No, it will not work with multiple instances. sockets represent only the users who connected to this particular server, not all the other servers. The likely answer to this question involves storing who is connected and which server they are connected to in a central database server so any socket server can find out if someone is connected and which server they are connected to by contacting the

Categories : Node Js
How to get socket's buffered data when socket closed due to network loss?
The socket doesn't get closed due to network loss. Only you can close your socket. The connection can be reset due to network problems. In this case all pending data is discarded. Nothing you can do about it.

Categories : Java
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