[C++] How to check client`s IP address.

When you call  accept(),  you will have client`s  information in  SOCKADDR_IN structure. 

 SOCKADDR_IN clntAddr; 

int addrLen = sizeof(clntAddr);  

SOCKET hSocket = ::accept(mListenSocket, (SOCKADDR*)&clntAddr, &addrLen); 

printf("Server IP = %s\n", inet_ntoa(clntAddr.sin_addr)); 

Result will be like this:     "Server IP = 211.22.32.15"