windows socket

//服务器

// 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 = {0};
    svraddr.sin_family = AF_INET;
    svraddr.sin_port = htons(5678);
    svraddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
    bind(socksvr, (struct sockaddr*)&svraddr, 
        sizeof(svraddr));
    listen(socksvr, SOMAXCONN);
    struct sockaddr_in clientaddr = {0};
    int nLen = sizeof(clientaddr);
    SOCKET sockclient = 
        accept(socksvr, (struct sockaddr*)&clientaddr, &nLen);
    
    char szText[100] = {0};
    recv(sockclient, szText, 100, 0);
    printf("%s
", szText);
    char szSend[100] = "Hello Client";
    send(sockclient, szSend, sizeof(szSend), 0);
    getch();
    closesocket(sockclient);
    closesocket(socksvr);
    
}


int main(int argc, char* argv[]) {
    
    WSADATA wsa = {0};
    WSAStartup(MAKEWORD(2,2), &wsa);
    
    TCTServer();
    
    return 0;
}

//客户端

// 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 = {0};
    addr.sin_family = AF_INET;
    addr.sin_port = htons(5678);
    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[100] = "Hello Server";
    send(sockclient, szSend, sizeof(szSend), 0);
    char szText[100] = {0};
    recv(sockclient, szText, 100, 0);
    printf("%s
", szText);
    getch();
    closesocket(sockclient);
    
}
int main(int argc, char* argv[])
{
    WSADATA wsa = {0};
    WSAStartup(MAKEWORD(2,2), &wsa);
    TCPClient();
    return 0;
}