tcp-client-c++

#include "stdafx.h"

#include <Winsock2.h>

#include <iostream>

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

using namespace std;

void main()

{

    int err;

    WORD versionRequired;

    WSADATA wsaData;

    versionRequired=MAKEWORD(,);

    err=WSAStartup(versionRequired,&wsaData);//協議庫的版本資訊

    if (!err)

    {

        printf("客戶端巢狀字已經開啟!\n");

    }

    else

    {

        printf("客戶端的巢狀字開啟失敗!\n");

        return;//結束

    }

    SOCKET clientSocket=socket(AF_INET,SOCK_STREAM,);

    SOCKADDR_IN clientsock_in;

    clientsock_in.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");

    clientsock_in.sin_family=AF_INET;

    clientsock_in.sin_port=htons();

    //bind(clientSocket,(SOCKADDR*)&clientsock_in,strlen(SOCKADDR));//注意第三個引數

    //listen(clientSocket,5);

    connect(clientSocket,(SOCKADDR*)&clientsock_in,sizeof(SOCKADDR));//開始連線

    char receiveBuf[];

    recv(clientSocket,receiveBuf,,);

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

    //send(clientSocket,"hello,this is client",strlen("hello,this is client")+1,0);

    send(clientSocket,"",strlen("")+,);

    char receiveBuff[];

    recv(clientSocket,receiveBuff,,);

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

    closesocket(clientSocket);

    WSACleanup();

}