// Server.cpp: implementation of the CServer class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Example1.h"
#include "Server.h"
#include "Example1Dlg.h"


#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CServer::CServer()
{
	m_hSocket=NULL;
}

CServer::~CServer()
{
	WSAAsyncSelect(m_hSocket, m_hWnd, 0, 0);
}

BOOL CServer::InitAndListen(HWND hwnd,UINT port)
{
	m_uPort=port;
	m_hWnd=hwnd;

	if(m_hSocket != NULL)
    {
        //如果已經(jīng)創(chuàng)建了套接字先關(guān)閉原來的
		closesocket(m_hSocket);
		m_hSocket = NULL;
	}
	if(m_hSocket == NULL)
	{
		//創(chuàng)建新的套接字，這里是創(chuàng)建的流類型的套接字
		m_hSocket = socket(AF_INET, SOCK_STREAM,0);
		ASSERT(m_hSocket != NULL);
		ServerInit();
	}
	m_addr.sin_family = AF_INET;
	m_addr.sin_addr.S_un.S_addr = INADDR_ANY;
	m_addr.sin_port = htons(m_uPort);

	int ret = 0;
	int error = 0;
	//綁定一個(gè)套接字到本機(jī)的地址
	ret = bind(m_hSocket, (LPSOCKADDR)&m_addr, sizeof(m_addr));

	if(ret == SOCKET_ERROR)
	{	//綁定錯(cuò)誤
		AfxMessageBox("Binding Error");
		return FALSE;
	}
	
	//開始一個(gè)偵聽過程，等待客戶的連接
	ret = listen(m_hSocket, 5);    //這里的第二個(gè)參數(shù)表示最多支持的客戶連接數(shù)
	if(ret == SOCKET_ERROR)
	{	//listen失敗
		AfxMessageBox("Listen Error");
		return FALSE;
	}

	return TRUE;
}
void CServer::ServerInit()
{
	if(WSAAsyncSelect(m_hSocket, m_hWnd, SER_MESSAGE, FD_ACCEPT|FD_READ|FD_WRITE|FD_CLOSE)>0)
		AfxMessageBox("error select");
}