#include "stdafx.h"

#include "WINSOCK2.H"

#pragma comment(lib,"WS2_32.lib")

#define BUF_SIZE 64  //缓冲区大小

int _tmain(int argc, _TCHAR* argv[])

{

    WSADATA wsd;//存储WSAStartup返回的数据windows socket数据。

    SOCKET  server;   //服务器套接字

    SOCKET  client;   //客户端套接字

    int retVal;

    char buf[BUF_SIZE];

    //初始化动态库套接字

    //WSAStartup      Winsock初始化

    ZeroMemory(buf, BUF_SIZE);

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

    {

        printf("WSAStartup failed 1/n");

        return ;

    }

    //创建套接字

    //AF_INET           IPV4套接字类型

    //AF_INET6          IPV6套接字类型

    //AF_UNIX           Unix套接字类型

    //SOCK_STREAM       TCP协议

    //SOCK_DGRAM        UDP协议

    //SOCK_RAW          特殊的IPV4，可以处理ICMP、IGMP等网络报文

    //INVALID_SOCKET    socket创建失败

    server = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    if (INVALID_SOCKET == server)

    {

        printf("socket failed !/n");

        WSACleanup();

        return -;

    }

    //服务器套接地址

    //sin_family   协议簇

    //sin_addr     地址

    //htonl()--"Host to Network Long"

    //ntohl()--"Network to Host Long"

    //htons()--"Host to Network Short"

    //ntohs()--"Network to Host Short"

    //INADDR_ANY   inet_addr("0.0.0.0")监听所有网络

    //SOCKADDR_IN  SOCKADDR  网络地址

    SOCKADDR_IN addserver;

    addserver.sin_family = AF_INET;

    addserver.sin_port = htons();

    addserver.sin_addr.S_un.S_addr = htonl(INADDR_ANY);

    //绑定套接字

    retVal = bind(server, (const struct sockaddr*)&addserver, sizeof(SOCKADDR_IN));

        if (SOCKET_ERROR == retVal)

        {

            printf("bind failed !/n");

            closesocket(server);

            WSACleanup();

            return false;

        }

    //监听套接字

    retVal = listen(server, );

    if (SOCKET_ERROR == retVal)

    {

        printf("listen failed!/n");

        closesocket(server);

        WSACleanup();

        return false;

    }

    //接受客户端数据

    //accept  建立链接  返回一个SOCKET类型的值，表示接收到的套接字的描述符，否则返回INVALID_SOCKET _In_ SOCKET s,

    sockaddr_in addrClient;

    int addrClintlen = sizeof(addrClient);

    client = accept(server, (sockaddr FAR*)&addrClient, &addrClintlen);

    {

        printf("accept failed !/n");

        closesocket(server);

        WSACleanup();

        return -;

    }

    //接收客户端套接字

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

    if (SOCKET_ERROR == retVal)

    {

        printf("recv failed !/n");

        closesocket(server);

        closesocket(client);

        WSACleanup();

        return false;

    }

    //退出程序

    printf("Recv From Client:%s/n", buf);

    retVal = send(client, "Hello Word!", strlen("Hello word!"), );

    if (SOCKET_ERROR == retVal)

    {

        printf("send failed !/n");

        closesocket(server);

        closesocket(client);

        WSACleanup();

        return false;

    }

    closesocket(server);

    closesocket(client);

    WSACleanup();

    return ;

}