Socket (send, receive)

Send. cpp:

#include <WinSock2.h>#include <stdio.h>#include <Windows.h>#pragma comment(lib,"ws2_32.lib")int main(){    unsigned long ip;    ip=inet_addr("127.0.0.1");    short port;    port=8000;    printf("Connecting to 127.0.0.1:8000....");    WSADATA wsa;    if (WSAStartup(MAKEWORD(2,2),&wsa)!=0)    {        printf("socket init error");        exit(-1);    }    SOCKET sock;    if ((sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_ATOM)    {        printf("create socket error");        exit(-1);    }    struct sockaddr_in serverAddress;    memset(&serverAddress,0,sizeof(sockaddr_in));    serverAddress.sin_family=AF_INET;    serverAddress.sin_addr.S_un.S_addr=ip;    serverAddress.sin_port=htons(port);    if (connect(sock,(sockaddr*)&serverAddress,sizeof(serverAddress))==SOCKET_ERROR)    {        printf("link error");        exit(-1);    }    char buf[4096];    while (1)    {        printf(">");        gets(buf);        if (send(sock,buf,strlen(buf),0)==SOCKET_ERROR)        {            printf("send error");            exit(-1);        }        int bytes;        if ((bytes=recv(sock,buf,sizeof(buf),0))==SOCKET_ERROR)        {            printf("receive error");            exit(-1);        }        buf[bytes]='\0';        printf("Message from %s:%s\n",inet_ntoa(serverAddress.sin_addr),buf);    }    WSACleanup();    return 0;}

Receive. cpp:

# Include <winsock2.h> # include <stdio. h> # include <windows. h> # pragma comment (Lib, "ws2_32.lib") int main (INT argc, char * argv []) {short port; Port = 8000; wsadata WSA; if (wsastartup (makeword (2, 2), & WSA )! = 0) {printf ("socket init error"); exit (-1);} socket serversocket; If (serversocket = socket (af_inet, sock_stream, ipproto_tcp )) = invalid_socket) {printf ("failed to create socket! "); Exit (-1);} struct sockaddr_in serveraddress; memset (& serveraddress, 0, sizeof (sockaddr_in); serveraddress. sin_family = af_inet; serveraddress. sin_addr.s_un.s_addr = htonl (inaddr_any); serveraddress. sin_port = htons (port); If (BIND (serversocket, (sockaddr *) & serveraddress, sizeof (serveraddress) = socket_error) {printf ("socket port error: % d ", Port); exit (-1);} If (Listen (serversocket, somaxconn) = socket_e Rror) {printf ("Listen error"); exit (-1);} printf ("server 8000 is listening ...... \ n "); socket clientsocket; struct sockaddr_in clientaddress; memset (& clientaddress, 0, sizeof (clientaddress); int addrlen = sizeof (clientaddress ); if (clientsocket = accept (serversocket, (sockaddr *) & clientaddress, & addrlen) = invalid_socket) {printf ("Link error"); exit (-1 );} char Buf [4096]; while (1) {int bytes; If (Tes = Recv (clientsocket, Buf, sizeof (BUF), 0) = socket_error) {printf ("data error"); exit (-1 );} buf [bytes] = '\ 0'; printf ("Message from % s: % s \ n", inet_ntoa (clientaddress. sin_addr), Buf); If (send (clientsocket, Buf, bytes, 0) = socket_error) {printf ("failed to send data! "); Exit (-1) ;}} wsacleanup (); exit (-1 );}

Other people's programs need to use socket in the project