Window TCP Server

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#include "stdafx.h"

#include <winsock2.h>

#include <iostream>

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

const static int _MAX_BUF_SIZE = 256;

using namespace std;

int _tmain( int argc , _TCHAR* argv[])

{

// 初始化Winsock 2.2

WSADATA wsaData ;

if( WSAStartup ( MAKEWORD( 2, 2 ), & wsaData ) != 0 )

{

cout<<"WSAStartup 无法初始化 !" <<endl ;

return -1;

}

// 通过WinSock 实现网络通信

SOCKET sServer ;

// 创建用于监听的Socket

sServer = socket ( AF_INET, SOCK_STREAM, IPPROTO_TCP );

if( INVALID_SOCKET == sServer )

{

cout<<"Socket Failed !" <<endl;

WSACleanup();

return -1;

}

// 设置服务器Socket 地址

SOCKADDR_IN addrServ ;

addrServ.sin_family = AF_INET;

addrServ.sin_port = htons( 9990 ); // 服务器端口号

addrServ.sin_addr .S_un. S_addr = htonl ( INADDR_ANY );

// 绑定

int retVal ;

retVal = bind ( sServer, ( const struct sockaddr *)&addrServ , sizeof( SOCKADDR_IN ) );

if( SOCKET_ERROR == retVal )

{

cout<<"bind failed !" <<endl;

closesocket( sServer );

WSACleanup();

return -1;

}

// 监听

retVal = listen ( sServer, 1 );

if( SOCKET_ERROR == retVal )

{

cout<<"listen failed !" <<endl;

closesocket( sServer );

WSACleanup();

return -1;

}

// 接受来自客户端的请求

SOCKET sClient ;

cout<<"TCP Server Start... ..." <<endl;

sockaddr_in addrClient ;

int addrClientlen = sizeof( addrClient );

sClient = accept ( sServer, ( sockaddr FAR *)&addrClient , &addrClientlen );

if( INVALID_SOCKET == sClient )

{

cout<<"accept failed " <<endl;

closesocket( sServer );

WSACleanup();

return -1;

}

// 循环接受客户端数据，直到客户端发送 quit 命令

char buf [_MAX_BUF_SIZE];

while( true )

{

ZeroMemory( buf , _MAX_BUF_SIZE );

retVal = recv ( sClient, buf, BUFSIZ , 0 );

if( SOCKET_ERROR == retVal )

{

cout<<"recv failed !" <<endl;

closesocket( sServer );

closesocket( sClient );

WSACleanup();

return -1;

}

// 获取系统的时间

SYSTEMTIME st ;

GetLocalTime(&st );

char sDateTime [30];

sprintf( sDateTime , "%4d-%2d-%2d %2d:%2d:%2d", st.wYear , st. wMonth, st .wDay, st.wHour , st. wMinute, st.wSecond );

cout<<sDateTime <<" , Recv From Client ["<< inet_ntoa(addrClient .sin_addr)<< ":"<<addrClient .sin_port<< "]: "<<buf <<endl;

if( strcmp ( buf, "quit" ) == 0 )

{

retVal = send ( sClient, "quit", strlen ("quit"), 0 );

break;

}

else

{

char msg [_MAX_BUF_SIZE];

sprintf( msg , "Message received - %s ", buf );

retVal = send ( sClient, msg, strlen (msg), 0 );

if( SOCKET_ERROR == retVal )

{

cout<<"send failed!" <<endl;

closesocket( sServer );

closesocket( sClient );

WSACleanup();

return -1;

}

// 最后做一些清理工作

closesocket( sServer );

closesocket( sClient );

WSACleanup();

system("pause" );

return 0;

}

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