Network Programming-UDP Communication (server)

[Cpp] // /// // UDPServer. cpp file # include ".. /common/InitSock. h "# include <stdio. h> CInitSock initSock; // initialize the Winsock database int main () {// create a set of characters SOCKET s =: socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP ); if (s = INVALID_SOCKET) {printf ("Failed socket () \ n"); return 0 ;}// fill in the sockaddr_in structure sockaddr_in sin; sin. sin_family = AF_INET; sin. sin_port = htons (4567); sin. sin_addr.S_un.S_addr = INADDR_ANY; // bind this character set to a local address if (: bind (s, (LPSOCKADDR) & sin, sizeof (sin) = SOCKET_ERROR) {printf ("Failed bind () \ n"); return 0 ;}// receives data char buff [1024]; sockaddr_in addr; int nLen = sizeof (addr ); while (TRUE) {int nRecv =: recvfrom (s, buff, 1024, 0, (sockaddr *) & addr, & nLen); if (nRecv> 0) {buff [nRecv] = '\ 0'; printf ("received data (% s): % s",: inet_ntoa (addr. sin_addr), buff) ;}:: closesocket (s );}