#include<WinSock2.h>

#include<Windows.h>

#include<stdio.h>

#include<iostream>

#pragma comment(lib,"ws2_32.lib")

int main()

{

    WORD ver = MAKEWORD(, );

    WSADATA dat;

    //WinSocket启动

    WSAStartup(ver, &dat);

    //1、建立一个socket

    SOCKET _sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); //AF_INET创建一个IPV4的套接字,SOCK_STREAM面向数据流的,IPPROTO_TCP TCP

    if (INVALID_SOCKET == _sock)

    {

        printf("ERROR:建立失败！\n");

    }

    //2.绑定

    sockaddr_in _sin = {};     //创建网络地址

    _sin.sin_family = AF_INET;

    _sin.sin_port = htons(); //Host to Network Short

    _sin.sin_addr.S_un.S_addr = inet_addr("127.0.0.1"); // IP地址

    if (bind(_sock, (sockaddr *)&_sin, sizeof(_sin)) == SOCKET_ERROR)

    {

        printf("ERROR:绑定失败！\n");

    }

    else

    {

        printf("TRUE:绑定成功！\n");

    }

    //3.监听网络端口

    if (listen(_sock, ) == SOCKET_ERROR)//第二个参数为最大等待多少人可以同时连接

    {

        printf("ERROR:监听失败！\n");

    }

    else

    {

        printf("TRUE:监听成功！\n");

    }

    //4.等待接收客户端连接

    sockaddr_in clientAddr = {};

    int nAddrLen = sizeof(sockaddr_in);

    SOCKET _cSOCK = INVALID_SOCKET;

    _cSOCK = accept(_sock, (sockaddr *)&clientAddr, &nAddrLen);

    if (_cSOCK == INVALID_SOCKET)

    {

        printf("ERROR:无效客户端SOCKET！\n");

    }

    printf("新客户端加入：Socket=%d,IP = %s\n",(int)_cSOCK, inet_ntoa(clientAddr.sin_addr));//inet_ntoa(clientAddr.sin_addr)将接收到的IP地址转化为字符串

    char _recvBuff[] = {};

    while ()

    {

        //5.接收客户端新数据

        int nLen = recv(_cSOCK, _recvBuff, , );

        if (nLen <= )

        {

            printf("客户端已退出！任务结束！");

            break;

        }

        printf("收到命令：%s\n",_recvBuff);

        //6.请求处理

        if ( == strcmp(_recvBuff, "getName"))

        {

            //7.向客户端发送一条数据

            char msgBuff[] = "Xiao Qiang\n";

            send(_cSOCK, msgBuff, strlen(msgBuff) + , );

        }

        else if ( == strcmp(_recvBuff, "getAge"))

        {

            //7.向客户端发送一条数据

            char msgBuff[] = "80\n";

            send(_cSOCK, msgBuff, strlen(msgBuff) + , );

        }

        else{

            //7.向客户端发送一条数据

            char msgBuff[] = "???.\n";

            send(_cSOCK, msgBuff, strlen(msgBuff) + , );

        }

    }

    //8.关闭自身的socket

    closesocket(_sock);

    //WinSocket关闭

    WSACleanup();

    system("pause");

    return ;

}

#include<WinSock2.h>

#include<Windows.h>

#include<stdio.h>

#pragma comment(lib,"ws2_32.lib")

int main()

{

    WORD ver = MAKEWORD(, );

    WSADATA dat;

    WSAStartup(ver, &dat);

    //1.建立一个socket

    SOCKET _sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    if (INVALID_SOCKET == _sock)

    {

        printf("ERROR:建立失败！\n");

    }

    //2.连接服务器

    sockaddr_in _sin = {};     //创建网络地址

    _sin.sin_family = AF_INET;

    _sin.sin_port = htons(); //Host to Network Short

    _sin.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");//inet_addr("127.0.0.1"); // IP地址

    int ret = connect(_sock, (sockaddr *)&_sin, sizeof(sockaddr_in));

    if (SOCKET_ERROR == ret)

    {

        printf("ERROR:连接失败！\n");

    }

    else

    {

        printf("连接成功！\n");

    }

    while (true)

    {

        //3.输入请求命令

        char cmdBuff[] = {};

        scanf("%s", cmdBuff);

        //4.处理请求命令

        if ( == strcmp(cmdBuff, "exit"))

        {

            printf("收到exit命令，已退出1");

            break;

        }

        else{

            //5.向服务器发送请求命令

            send(_sock, cmdBuff, strlen(cmdBuff) + , );

        }

        //6.接收服务器信息

        char recvBuff[] = {};

        int nlen = recv(_sock, recvBuff, , );

        if (nlen <= )

        {

            printf("ERROR:接收失败！\n");

        }

        else

        {

            printf("接收到数据：%s\n", recvBuff);

        }

    }

    //7.关闭套接字

    closesocket(_sock);

    //WinSocket启动

    WSAStartup(ver, &dat);

    //WinSocket关闭

    WSACleanup();

    printf("已退出!");

    getchar();

    return ;

}