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

//

#include "stdafx.h"

#include <winsock2.h>

#include <conio.h>

#include <stdio.h>

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

void TCTServer()

{

    SOCKET socksvr = socket(AF_INET, SOCK_STREAM,

        IPPROTO_TCP);

    if(INVALID_SOCKET == socksvr) {

        return;

    }

    struct sockaddr_in svraddr = {};

    svraddr.sin_family = AF_INET;

    svraddr.sin_port = htons();

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

    bind(socksvr, (struct sockaddr*)&svraddr,

        sizeof(svraddr));

    listen(socksvr, SOMAXCONN);

    struct sockaddr_in clientaddr = {};

    int nLen = sizeof(clientaddr);

    SOCKET sockclient =

        accept(socksvr, (struct sockaddr*)&clientaddr, &nLen);

    char szText[] = {};

    recv(sockclient, szText, , );

    printf("%s\n", szText);

    char szSend[] = "Hello Client";

    send(sockclient, szSend, sizeof(szSend), );

    getch();

    closesocket(sockclient);

    closesocket(socksvr);

}

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

    WSADATA wsa = {};

    WSAStartup(MAKEWORD(,), &wsa);

    TCTServer();

    return ;

}

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

//

#include "stdafx.h"

#include <winsock2.h>

#include <conio.h>

#include <stdio.h>

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

void TCPClient()

{

    SOCKET sockclient =

        socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);

    if(INVALID_SOCKET == sockclient) {

        return;

    }

    struct sockaddr_in addr = {};

    addr.sin_family = AF_INET;

    addr.sin_port = htons();

    addr.sin_addr.S_un.S_addr =

        inet_addr("127.0.0.1");

    //连接到服务器

    connect(sockclient, (struct sockaddr*)&addr, sizeof(addr));

    char szSend[] = "Hello Server";

    send(sockclient, szSend, sizeof(szSend), );

    char szText[] = {};

    recv(sockclient, szText, , );

    printf("%s\n", szText);

    getch();

    closesocket(sockclient);

}

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

{

    WSADATA wsa = {};

    WSAStartup(MAKEWORD(,), &wsa);

    TCPClient();

    return ;

}