我最近写代理服务器类似的程序，但是我将客户机给我的包处理后，发送到服务器确没有得到客户机的相应，一会儿就会显示"The remote server has closed."

不知道五一还有高手在线帮我看看不？

唉，最近老师崔着要在五一后必须把毕业设计搞定，五一也不能玩了，郁闷中...

部分代码：
... ...
typedef struct CombineSock{
    SOCKET sClient;//socket communicate with client.
    SOCKET sServer;
    SOCKADDR_IN addrClient;//client address.
    SOCKADDR_IN addrServer;
    BOOL bIsClientClosed;//if the client closed.
    BOOL bIsServerClosed;
}COMBINESOCK,FAR *PCOMBINESOCK;

typedef struct Package{
    COMBINESOCK csCom;
    char szInfo[DEFAULT_BUFFER_SIZE];//the data buffer.
}PACKAGE,FAR *PPACKAGE;
... ...

sCom[i].sClient=accept(g_sListen,(SOCKADDR*)&sCom[i].addrClient,&iAddrSize);

if(sCom[i].sClient==INVALID_SOCKET)
{
    printf("Accept connection failed with error:\n");
    WSAGetErrorToInfo();
    break;
}

//get the client name,and display status information.
... ...

//create a thread to handle the request.
hRecv=CreateThread(NULL,0,RecvClient,(PVOID)&sCom[i],0,NULL);

DWORD WINAPI RecvClient(LPVOID lpParam)
{
    PACKAGE ComPack;

    ... ..

    ComPack.csCom=*((COMBINESOCK*)lpParam);
    memset(ComPack.szInfo,0,DEFAULT_BUFFER_SIZE);

    ... ...

    while(TRUE)//always accept the client request until encountered errors,
        //or client closed connection.
    {
        retRecvC=recv(ComPack.csCom.sClient,ComPack.szInfo,DEFAULT_BUFFER_SIZE,0);
        if(retRecvC==0)//the client closed the connection gracefully.
        {
            printf("Client %s closed the connection.\n",
                szClientName);
            ComPack.csCom.bIsClientClosed=TRUE;
            break;
        }
        else if(retRecvC==SOCKET_ERROR)//encountered errors.
        {
            printf("Receive form %s failed with error:\n",
                szClientName);WSAGetErrorToInfo();
            ComPack.csCom.bIsClientClosed=TRUE;
            break;
        }
        ComPack.szInfo[retRecvC]='\0';
        #ifdef _DEBUG
        printf("Received %s:\n%s\n",szClientName,ComPack.szInfo);
        #endif

        GetAddrAndPort(ComPack.szInfo,szAddrReq,
            &ComPack.csCom.addrServer.sin_port);
                   ... ...

        if(!GetAddr(szAddrReq,&ComPack.csCom.addrServer.sin_addr.s_addr))
        {
            printf("The server %s requested by client %s can't reach.\n",
                szAddrReq,szClientName);
            //send the error message to the client.
            ... ...
            break;
        }
        
        HANDLE hSendToServer;
        //create thread to fetch the request from remote server.
        hSendToServer=CreateThread(NULL,0,ProxyToServer,(LPVOID)&ComPack,
            0,NULL);
        ... ...
    }
    closesocket(ComPack.csCom.sClient);
    return 1;
}