Re: TCP Queue (Backlog)

I use BeginAcceptSocket() to make it asynchronous..

-------
public void StartListen()
{

    //log it
    CLog.WriteLine("===========\r\nListing on: " + m_szHost + ":" +
m_lPort.ToString() + "\r\n===========", CLog.LOG_TYPE.LOG_INFO);

    //start listing on the given port
    IPAddress inputDNS_IP = Dns.GetHostEntry(this.m_szHost).AddressList[0];

    try
    {
        //set to listen on specific IP:port
        this.svrListener = new TcpListener(inputDNS_IP, this.m_lPort);
        //setup timeouts..
        this.svrListener.Server.ReceiveTimeout = 30000;
        this.svrListener.Server.SendTimeout = 30000;
        //start with a backlog "TCP/IP Queue" of 1024
        this.svrListener.Start(1024);
    }
    catch (SocketException e)
    {
        //log it
        CLog.WriteLine("Error while creating the listener: " + e.Message,
CLog.LOG_TYPE.LOG_ERR);
    }

    while (true)
    {
        // Set the event to nonsignaled state.
        clientConnected.Reset();
        // Accept the connection.
        // BeginAcceptSocket() creates the accepted socket.
        this.svrListener.BeginAcceptSocket(new
AsyncCallback(DoAcceptSocketCallback), this.svrListener);

        //log it
        CLog.WriteLine("Socket Listening...", CLog.LOG_TYPE.LOG_INFO);
        // Wait until a connection is made and processed before
        // continuing.
        clientConnected.WaitOne();
    }
}

// Process the client connection.
public void DoAcceptSocketCallback(IAsyncResult ar)
{
    CLog.WriteLine("Client Connecting...", CLog.LOG_TYPE.LOG_INFO);

    //Get the listener that handles the client request.
    TcpListener listener = (TcpListener)ar.AsyncState;

    //End the operation and display the received data on the
    //console.
    Socket sckConnection = listener.EndAcceptSocket(ar);

    //Signal the calling thread to continue.
    clientConnected.Set();

    //log it
    CLog.WriteLine("{" + sckConnection.Handle.ToString() + "} Client
Accepted...", CLog.LOG_TYPE.LOG_INFO);

    //set vars for Socket Class
    CSocket socket = new CSocket(sckConnection, this.m_szHost,
this.m_lPort);

    //start the thread
    Thread th = new Thread(new ThreadStart(socket.Process));
    th.Start();

    CLog.WriteLine("{" + sckConnection.Handle.ToString() + "} Socket Thread
Created...", CLog.LOG_TYPE.LOG_INFO);
}
-------

----- Original Message -----
From: "Shen, ShunMing" <[email protected]>
To: <[email protected]>
Sent: Friday, January 04, 2008 2:57 AM
Subject: Re: [DOTNET-CX] TCP Queue (Backlog)


AcceptTcpClient() will remove TCP message from queue; Do you use it in your
program ?

-----Original Message-----
From: Discussion relating to the specifics of the C# and Managed C++
languages [mailto:[email protected]] On Behalf Of Gavin Landon
Sent: 2008年1月4日 16:12
To: [email protected]
Subject: [DOTNET-CX] TCP Queue (Backlog)

Morning all..

I'm having an issue that I've spent a few days on.   I'm building a web
server and when I stress tested the server I got great results, but with one
bad one..  I'm getting a lot of socket errors.   I have the following, but
this doesn't seem to be working list expected..

IPAddress inputDNS_IP = Dns.GetHostEntry(this.m_szHost).AddressList[0];
this.svrListener = new TcpListener(inputDNS_IP, this.m_lPort);
//setup timeouts..
this.svrListener.Server.ReceiveTimeout = 30000;
this.svrListener.Server.SendTimeout = 30000;
//start with a backlog "TCP/IP Queue" of 1024
this.svrListener.Start(1024);

I've changed the backlog param in Start() from 1 to 4096 and no matter what
the value it doesn't seem to queue up the TCP message like expected.   Am I
missing something?

/*Chizl*/


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