Simple TCPIP client server and tcpip Client Server

Simple TCPIP client server and tcpip Client Server

1 // soClient. cpp: Defines the entry point for the console application. 2 // 3 4 # include "stdafx. h "5 # include <winsock2.h> 6 # pragma comment (lib," ws2_32.lib ") 7 8 int _ tmain (int argc, _ TCHAR * argv []) 9 {10 WSADATA wsadata; 11 WORD dVer = MAKEWORD (2, 2); 12 WSAStartup (dVer, & wsadata); 13 14 socket s =: socket (AF_INET, SOCK_STREAM, IPPROTO_TCP ); 15 if (S = INVALID_SOCKET) 16 {17 return FALSE; 18} 19 sockaddr_in serverAddr; 20 serverAddr. sin_addr.S_un.S_addr = inet_addr ("127.0.0.1"); 21 serverAddr. sin_family = AF_INET; 22 serverAddr. sin_port = htons (4567); 23 if (: connect (S, (LPSOCKADDR) & serverAddr, sizeof (serverAddr) = SOCKET_ERROR) 24 {25 if (WSAGetLastError () = 10061) 26 {27 printf ("server not enabled"); 28} 29 return FALSE; 30} 31 32 char buff [256]; 33 int irecv = :: recv (S, buff, 256, 0); 34 if (irecv> 0) 35 {36 buff [irecv] = '\ 0 '; // The returned data will not end. Therefore, manually Add 37 printf ("returned data: % s", buff); 38} 39 40 closesocket (S); 41 return 0; 42}

 

 

 

 

Server

1 // soServer. cpp: Defines the entry point for the console application. 2 // 3 4 # include "stdafx. h "5 # include" winsock2.h "6 # pragma comment (lib," ws2_32.lib ") 7 8 int _ tmain (int argc, _ TCHAR * argv []) 9 {10 WSADATA wsadata; 11 WORD dVer = MAKEWORD (2, 2); 12 if (WSAStartup (dVer, & wsadata )! = 0) 13 {14 return FALSE; 15} 16 17 sockaddr_in sin; 18 sin. sin_family = AF_INET; 19 sin. sin_addr.S_un.S_addr = INADDR_ANY; 20 sin. sin_port = htons (4567); 21 socket s =: socket (AF_INET, SOCK_STREAM, IPPROTO_TCP); 22 23 24 if (: bind (S, (LPSOCKADDR) & sin, sizeof (sin) = SOCKET_ERROR) 25 {26 return FALSE; 27} 28 29 if (: listen (S, 2) = SOCKET_ERROR) 30 {31 return FALSE; 32} 33 34 sockaddr_in remoteAddr; 35 int nAddrLen = sizeof (RemoteAddr); 36 SOCKET sClient; 37 char text [] = "you have connected! Welcome! "; 38 printf (" waiting to accept the connection. \ R \ n "); 39 while (TRUE) 40 {41 sClient =: accept (S, (LPSOCKADDR) & remoteAddr, & nAddrLen ); 42 if (sClient = SOCKET_ERROR) 43 {44 printf ("failed to get"); 45 continue; 46} 47 printf ("received new connection: % s ", inet_ntoa (remoteAddr. sin_addr); 48 send (sClient, text, strlen (text), 0); 49 closesocket (sClient); 50} 51 closesocket (S); 52 return 0; 53}