基于TCP的通信 客户端

#include <WINSOCK2.H>  

#include <stdio.h>
// socket   套接字

#pragma comment (lib,"Ws2_32")   //library 

DWORD WINAPI ThreadInput(LPVOID lpParam);
DWORD WINAPI ThreadOutput(LPVOID lpParam);

SOCKET  sClient;

void main()
{
    //first    初始化DLL
    WSADATA wsadata;
    if (WSAStartup(MAKEWORD(2,2),&wsadata)!=0)
    {
        printf("Init Error\n");

        return ;
    }

    //second  创建套接字

    sClient = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); 

    if (sClient == INVALID_SOCKET)
    {
        printf("Create Listen Is Error\n");

        return;
    }

    sockaddr_in  LocalAddr;

    LocalAddr.sin_family = AF_INET;

    LocalAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");   //127.0.0.1

    LocalAddr.sin_port = htons(8888);

    if (connect(sClient,(sockaddr*)&LocalAddr,sizeof(LocalAddr))==SOCKET_ERROR)
    {

    //    WSAENETDOWN
        int a = GetLastError();
        closesocket(sClient);

        printf("Connect Is Error\n");

        return;
    }

    HANDLE hThread[2];

    //这里是整个程序的核心部分我们一定要那个管道图

    hThread[0] = CreateThread(NULL,0,ThreadOutput,NULL,0,NULL);

    hThread[1] = CreateThread(NULL,0,ThreadInput,NULL,0,NULL);

    WaitForMultipleObjects(2,hThread,TRUE,INFINITE);

}

DWORD WINAPI ThreadInput(LPVOID lpParam)
{
    SOCKET s = sClient;

    //该线程函数是从套接字中获取信息并且通过管道注入cmd的工作函数

    char Buffer[4096] = {0};

    DWORD dWrite = 0;
    DWORD dwRecvd = 0;
    while (TRUE)
    {

        scanf("%s",Buffer);

        send(s,Buffer,strlen(Buffer),0);
    }

    return 0;
}

DWORD WINAPI ThreadOutput(LPVOID lpParam)
{

     SOCKET s = sClient;

    //该线程函数是从被控端返给控端信息的线程函数

    char Buffer[4096]={0};
    while (TRUE)
    {

        int Ret = recv(s,Buffer,4096,0);

        if(Ret<0)
        {
            break;
        }

        Buffer[Ret]=‘\0‘;

        printf("%s",Buffer);

    }

    return 0;
}