Windows Socket编程

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原文地址：Windows Socket编程

Windows下Socket编程主要包括以下几部分：
服务端
   1、初始化Windows Socket库。
   2、创建Socket。
   3、绑定Socket。
   4、监听。
   5、Accept。
   6、接收、发送数据。

客户端
   1、初始化Windows Socket库。
   2、创建Socket。
   3、连接Socket。
   4、接收、发送数据。

服务端每接收到一个客户端的Socket,则创建一个线程。满足一个服务端连接多个客户端

//Server.cpp#include <iostream>#include <winsock2.h>#pragma comment(lib,"ws2_32.lib")#include <Windows.h>using namespace std;#define  PORT 4000#define  IP_ADDRESS "192.168.1.145"DWORD WINAPI ClientThread(LPVOID lpParameter){    SOCKET CientSocket = (SOCKET)lpParameter;    int Ret = 0;    char RecvBuffer[MAX_PATH];    while ( true )    {        memset(RecvBuffer, 0x00, sizeof(RecvBuffer));        Ret = recv(CientSocket, RecvBuffer, MAX_PATH, 0);        if ( Ret == 0 || Ret == SOCKET_ERROR )         {            cout<<"客户端退出!"<<endl;            break;        }        cout<<"接收到客户信息为:"<<RecvBuffer<<endl;    }    return 0;}int main(int argc, char* argv[]){    WSADATA  Ws;    SOCKET ServerSocket, CientSocket;    struct sockaddr_in LocalAddr, ClientAddr;    int Ret = 0;    int AddrLen = 0;    HANDLE hThread = NULL;    //Init Windows Socket    if ( WSAStartup(MAKEWORD(2,2), &Ws) != 0 )    {        cout<<"Init Windows Socket Failed::"<<GetLastError()<<endl;        return -1;    }        //Create Socket    ServerSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);    if ( ServerSocket == INVALID_SOCKET )    {        cout<<"Create Socket Failed::"<<GetLastError()<<endl;        return -1;    }    LocalAddr.sin_family = AF_INET;    LocalAddr.sin_addr.s_addr = inet_addr(IP_ADDRESS);    LocalAddr.sin_port = htons(PORT);    memset(LocalAddr.sin_zero, 0x00, 8);    //Bind Socket    Ret = bind(ServerSocket, (struct sockaddr*)&LocalAddr, sizeof(LocalAddr));    if ( Ret != 0 )    {        cout<<"Bind Socket Failed::"<<GetLastError()<<endl;        return -1;    }    Ret = listen(ServerSocket, 10);    if ( Ret != 0 )    {        cout<<"listen Socket Failed::"<<GetLastError()<<endl;        return -1;    }    cout<<"服务端已经启动"<<endl;    while ( true )    {        AddrLen = sizeof(ClientAddr);        CientSocket = accept(ServerSocket, (struct sockaddr*)&ClientAddr, &AddrLen);        if ( CientSocket == INVALID_SOCKET )        {            cout<<"Accept Failed::"<<GetLastError()<<endl;            break;        }        cout<<"客户端连接::"<<inet_ntoa(ClientAddr.sin_addr)<<":"<<ClientAddr.sin_port<<endl;                hThread = CreateThread(NULL, 0, ClientThread, (LPVOID)CientSocket, 0, NULL);        if ( hThread == NULL )        {            cout<<"Create Thread Failed!"<<endl;            break;        }        CloseHandle(hThread);    }    closesocket(ServerSocket);    closesocket(CientSocket);    WSACleanup();    return 0;}

//Client.cpp#include <iostream>#include <winsock2.h>#pragma comment(lib,"ws2_32.lib")#include <Windows.h>using namespace std;#define  PORT 4000#define  IP_ADDRESS "192.168.1.145"int main(int argc, char* argv[]){    WSADATA  Ws;    SOCKET CientSocket;    struct sockaddr_in ServerAddr;    int Ret = 0;    int AddrLen = 0;    HANDLE hThread = NULL;    char SendBuffer[MAX_PATH];    //Init Windows Socket    if ( WSAStartup(MAKEWORD(2,2), &Ws) != 0 )    {        cout<<"Init Windows Socket Failed::"<<GetLastError()<<endl;        return -1;    }    //Create Socket    CientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);    if ( CientSocket == INVALID_SOCKET )    {        cout<<"Create Socket Failed::"<<GetLastError()<<endl;        return -1;    }    ServerAddr.sin_family = AF_INET;    ServerAddr.sin_addr.s_addr = inet_addr(IP_ADDRESS);    ServerAddr.sin_port = htons(PORT);    memset(ServerAddr.sin_zero, 0x00, 8);    Ret = connect(CientSocket,(struct sockaddr*)&ServerAddr, sizeof(ServerAddr));    if ( Ret == SOCKET_ERROR )    {        cout<<"Connect Error::"<<GetLastError()<<endl;        return -1;    }    else    {        cout<<"连接成功!"<<endl;    }    while ( true )    {        cin.getline(SendBuffer, sizeof(SendBuffer));        Ret = send(CientSocket, SendBuffer, (int)strlen(SendBuffer), 0);        if ( Ret == SOCKET_ERROR )        {            cout<<"Send Info Error::"<<GetLastError()<<endl;            break;        }    }        closesocket(CientSocket);    WSACleanup();    return 0;}