TCP recvfrom() doesn't store 'from'

Question

I\'m making a server program using TCP and I want to get the IP adress of the sender of the message I just received. Here\'s my code:

case FD_READ:
{    //In         


        

Answer 1

For a connected TCP socket, you should use getpeername() to obtain the address of the remote socket.

Answer 2

TCP is a connection-oriented protocol. from and fromlen are meant to be used with connectionless protocols, such as UDP. According to the documentation, recvfrom ignores from and fromlen for connection-oriented sockets.