服务器端

// TcpSocket_Server.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <windows.h>
#include <iostream>
using namespace std;
#pragma comment(lib, "Ws2_32.lib")

int _tmain(int argc, _TCHAR* argv[])
{
    int errInfo;
    WSADATA wsadata;
    WORD version = MAKEWORD(1,1);
    errInfo = WSAStartup(version,&wsadata);
    if(errInfo != NOERROR)
    {
        printf_s("socket init error code = %d",errInfo);
        return 0;
    }
    int _socket = socket(AF_INET,SOCK_STREAM,0);
    sockaddr_in _sockaddr_in;
    _sockaddr_in.sin_family = AF_INET;
    _sockaddr_in.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
    _sockaddr_in.sin_port = htons(8972);

    bind(_socket,(sockaddr*)&_sockaddr_in,sizeof(_sockaddr_in));

    listen(_socket,5);

    sockaddr_in client_sin;
    int len = sizeof(client_sin);

    int client_socket = accept(_socket,(sockaddr*)&client_sin,&len);

    char recv_buf[1024];
    recv(client_socket,recv_buf,sizeof(recv_buf),0);

    printf_s("data is %s",recv_buf);

    char send_buf[1024] = {"这里是服务端\n"};
    send(client_socket,send_buf,sizeof(send_buf),0);
    
    closesocket(_socket);

    system("pause");

    return 0;
}