SOCKET编程

server.cpp

#include <iostream>
#include <string.h>
#include <windows.h>
#define PORT 5000
using namespace std;
#pragma comment(lib,"ws2_32.lib")

DWORD WINAPI RecvSendMessage(LPVOID arg)
{
    char serbuff[255];
    char clibuff[255];
    SOCKET sockCli = *(SOCKET*)arg;
    while (1)
    {
        int ret = recv(sockCli, serbuff, sizeof(serbuff), 0);
        cout << serbuff << endl;
        cin >> clibuff;
        send(sockCli, clibuff, strlen(clibuff) + 1, 0);
    }
    return (DWORD)0;
}
int main()
{
    INT   Ret;
    WSADATA   wsaData;
    // 初始化WinSock环境
    if ((Ret = WSAStartup(MAKEWORD(2, 2), &wsaData)) != 0)
    {
        printf("WSAStartup()   failed   with   error   %d\n", Ret);
        WSACleanup();
        return -1;
    }
    SOCKET sockSer, sockCli;
    SOCKADDR_IN addrSer, addrCli;

    sockSer = socket(AF_INET,SOCK_STREAM,0);

    addrSer.sin_family = AF_INET;
    addrSer.sin_port = htons(PORT);
    addrSer.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");

    int len = sizeof(SOCKADDR);
    bind(sockSer,(SOCKADDR*)&addrSer,len);
    listen(sockSer,5);


    cout << "服务器正在等待......" << endl;
    sockCli = accept(sockSer, (SOCKADDR*)&addrCli, &len);
        if (sockCli <= 0)
        {
            cout << "Accept Error!!!" << endl;
        }
        else
        {
            cout << "Accept Successed!!!" << endl;
        }
    HANDLE hThread;

    DWORD ThreadId;
    cout << "Ser:>" << endl;
    while (1)
    {       
            hThread = CreateThread(NULL, 0, &RecvSendMessage, (LPVOID)&sockCli, 0, &ThreadId);
            WaitForSingleObject(hThread, INFINITE);
    }
    return 0;
}

client.cpp

#include <iostream>
#include <windows.h>
using namespace std;
#define PORT 5000
#pragma comment(lib,"ws2_32.lib")
int main()
{
    INT Ret;
    WSADATA wsaData;
    //同步版本。
    if ((Ret = WSAStartup(MAKEWORD(2, 2), &wsaData)) != 0)
    {
        printf("WSAStaartup() failes with error %d\n",Ret);
        WSACleanup();
        return -1;
    }
    SOCKET sockCli = socket(AF_INET,SOCK_STREAM,0);
    SOCKADDR_IN addrCli;
    addrCli.sin_family = AF_INET;
    addrCli.sin_port = htons(PORT);
    addrCli.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");

    int ret = connect(sockCli, (SOCKADDR*)&addrCli, sizeof(SOCKADDR));
    if (ret < 0)
    {
        cout << "connect error!!" << endl;
        WSACleanup();
        cout << ret << endl;
        return -1;
    }
    char serbuff[255];
    char clibuff[255];
    while (1)
    {   
        cin >> serbuff;
        send(sockCli,serbuff,strlen(serbuff)+1,0);
        recv(sockCli,clibuff,sizeof(clibuff),0);
        cout << clibuff << endl;
    }
    return 0;
}