// Server.cpp : Defines the entry point for the console application.

//

#include "winsock2.h"

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

#include <iostream>

using namespace std;

int main(int argc, char* argv[])

{

    const int BUF_SIZE = ;

    WSADATA            wsd;            //WSADATA变量

    SOCKET            sServer;        //服务器套接字

    SOCKET            sClient;        //客户端套接字

    SOCKADDR_IN        addrServ;;        //服务器地址

    char            buf[BUF_SIZE];    //接收数据缓冲区

    char            sendBuf[BUF_SIZE];//返回给客户端得数据

    int                retVal;            //返回值

                                    //初始化套结字动态库

    if (WSAStartup(MAKEWORD(, ), &wsd) != )

    {

        cout << "WSAStartup failed!" << endl;

        return ;

    }

    //创建套接字

    sServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    if (INVALID_SOCKET == sServer)

    {

        cout << "socket failed!" << endl;

        WSACleanup();//释放套接字资源;

        return  -;

    }

    //服务器套接字地址

    addrServ.sin_family = AF_INET;

    addrServ.sin_port = htons();

    addrServ.sin_addr.s_addr = INADDR_ANY;

    //绑定套接字

    retVal = bind(sServer, (LPSOCKADDR)&addrServ, sizeof(SOCKADDR_IN));

    if (SOCKET_ERROR == retVal)

    {

        cout << "bind failed!" << endl;

        closesocket(sServer);    //关闭套接字

        WSACleanup();            //释放套接字资源;

        return -;

    }

    //开始监听

    retVal = listen(sServer, );

    if (SOCKET_ERROR == retVal)

    {

        cout << "listen failed!" << endl;

        closesocket(sServer);    //关闭套接字

        WSACleanup();            //释放套接字资源;

        return -;

    }

    //接受客户端请求

    sockaddr_in addrClient;

    int addrClientlen = sizeof(addrClient);

    sClient = accept(sServer, (sockaddr FAR*)&addrClient, &addrClientlen);

    if (INVALID_SOCKET == sClient)

    {

        cout << "accept failed!" << endl;

        closesocket(sServer);    //关闭套接字

        WSACleanup();            //释放套接字资源;

        return -;

    }

    while (true)

    {

        //接收客户端数据

        ZeroMemory(buf, BUF_SIZE);

        retVal = recv(sClient, buf, BUF_SIZE, );

        if (SOCKET_ERROR == retVal)

        {

            cout << "recv failed!" << endl;

            closesocket(sServer);    //关闭套接字

            closesocket(sClient);    //关闭套接字

            WSACleanup();            //释放套接字资源;

            return -;

        }

        if (buf[] == '')

            break;

        cout << "客户端发送的数据: " << buf << endl;

        cout << "向客户端发送数据: ";

        cin >> sendBuf;

        send(sClient, sendBuf, strlen(sendBuf), );

    }

    //退出

    closesocket(sServer);    //关闭套接字

    closesocket(sClient);    //关闭套接字

    WSACleanup();            //释放套接字资源;

    return ;

}

#include "winsock2.h"

#include <iostream>

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

using namespace std;

BOOL RecvLine(SOCKET s, char* buf); //读取一行数据

int main(int argc, char* argv[])

{

    const int BUF_SIZE = ;

    WSADATA wsd; //WSADATA变量

    SOCKET sHost; //服务器套接字

    SOCKADDR_IN servAddr; //服务器地址

    char buf[BUF_SIZE]; //接收数据缓冲区

    char bufRecv[BUF_SIZE];

    int retVal; //返回值

                //初始化套结字动态库

    if (WSAStartup(MAKEWORD(, ), &wsd) != )

    {

        cout << "WSAStartup failed!" << endl;

        return -;

    }

    //创建套接字

    sHost = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    if (INVALID_SOCKET == sHost)

    {

        cout << "socket failed!" << endl;

        WSACleanup();//释放套接字资源

        return  -;

    }

    //设置服务器地址

    servAddr.sin_family = AF_INET;

    servAddr.sin_addr.s_addr = inet_addr("127.0.0.1");

    servAddr.sin_port = htons((short));

    int nServAddlen = sizeof(servAddr);

    //连接服务器

    retVal = connect(sHost, (LPSOCKADDR)&servAddr, sizeof(servAddr));

    if (SOCKET_ERROR == retVal)

    {

        cout << "connect failed!" << endl;

        closesocket(sHost); //关闭套接字

        WSACleanup(); //释放套接字资源

        return -;

    }

    while (true)

    {

        //向服务器发送数据

        ZeroMemory(buf, BUF_SIZE);

        cout << " 向服务器发送数据:  ";

        cin >> buf;

        retVal = send(sHost, buf, strlen(buf), );

        if (SOCKET_ERROR == retVal)

        {

            cout << "send failed!" << endl;

            closesocket(sHost); //关闭套接字

            WSACleanup(); //释放套接字资源

            return -;

        }

        //RecvLine(sHost, bufRecv);

        ZeroMemory(bufRecv, BUF_SIZE);

        recv(sHost, bufRecv, BUF_SIZE, ); // 接收服务器端的数据， 只接收5个字符

        cout << endl << "从服务器接收数据：" << bufRecv;

        cout << "\n";

    }

    //退出

    closesocket(sHost); //关闭套接字

    WSACleanup(); //释放套接字资源

    return ;

}