[RESOLVED] TcpListener Multi-threaded

I've created a multi-threaded TcpListener to receive request from clients.

I created a background worker to handle the endless loop that checks if there is a new connection.

Code:

---

bw.WorkerSupportsCancellation = true;
                bw.WorkerReportsProgress = true;
                bw.DoWork += new DoWorkEventHandler(bw_start);

                if (!bw.IsBusy)
                    bw.RunWorkerAsync();

---

This is the bw_start:

Code:

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private void bw_start(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
           
            TcpClient clientSocket = default(TcpClient);
            tListener.Start();

            int counter = 0;
           
            counter = 0;
            while (true)
            {
                counter += 1;
                clientSocket = tListener.AcceptTcpClient();
                HandleClient client = new HandleClient();
                client.startClient(clientSocket, Convert.ToString(counter));
            }

            clientSocket.Close();
            tListener.Stop();
        }

---

HandleClient Methods:

Code:

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public void startClient(TcpClient inClientSocket, string clineNo)
        {
            this.clientSocket = inClientSocket;
            this.clNo = clineNo;
           
            ThreadPool.QueueUserWorkItem(new WaitCallback(doTransact));           
        }

---

Code:

---

private void doTransact(object state)
        {
//some declarations here

while (True)
            {
try
                {
                    if (clientSocket.Connected)
                    {

recv = networkStream.Read(bytesFrom, 0, (int)clientSocket.ReceiveBufferSize); //this part receives an error that is realted about threading
//some processing here

//send response

}
else
{
break;
}
}
else
{
break;
}
}
}

---

Then I've created a multi-threaded client that sends transactions with random interval between 0-1000ms.
Then after 100+ sending it stucks in:

Code:

---

recv = networkStream.Read(bytesFrom, 0, (int)clientSocket.ReceiveBufferSize);

---

When I restart the client, it says that the server isn't listening.

I'm trying to reproducing the error and post the exact exception here.

The TcpListener inherently supports asynchronous processing via the BeginAcceptTcpClient and EndAcceptTcpClient methods.

Quote:

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Originally Posted by jmcilhinney

The TcpListener inherently supports asynchronous processing via the BeginAcceptTcpClient and EndAcceptTcpClient methods.

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I'll try it.
But is it possible for a Java-based client to connect to an asynchronous .NET-based server?
Thanks.

Quote:

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Originally Posted by eSPiYa

I'll try it.
But is it possible for a Java-based client to connect to an asynchronous .NET-based server?
Thanks.

---

TCP is TCP. It's a standard protocol. It doesn't have to be a .NET TcpClient at the other end. It just has to be something talking TCP.

Quote:

---

Originally Posted by jmcilhinney

TCP is TCP. It's a standard protocol. It doesn't have to be a .NET TcpClient at the other end. It just has to be something talking TCP.

---

Thanks.
But I've tried before to use an asynchronous TcpClient to connect to a Java-based server and I can't connect.
Anyway, I'll try to test it.

What's your definition of an asynchronous TcpClient? Are you talking about calling BeginConnect instead of Connect? How exactly did you do it? Did you provide a callback and then call EndConnect in that method?

Quote:

---

Originally Posted by jmcilhinney

What's your definition of an asynchronous TcpClient? Are you talking about calling BeginConnect instead of Connect? How exactly did you do it? Did you provide a callback and then call EndConnect in that method?

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I can't remember how I did it exactly but I used BeginConnect then when I tried to send any message; the connection was dropped.

It is working with Java, but after several connect-send-receive-disconnect(500+); the server refuses another connection.

Define "refuses".

It seems that the socket connection drops.
This is the error message from client:

Code:

---

No connection could be made because the target machine actively refused it

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On the server side, it doesn't throw any exception.

I can't tell you much more I'm afraid as I've not really used TCP comms much myself. Hopefully the extra info will enable someone else to help you though.

Thanks.
I think I just need to limit incoming connections.

Have you googled for that error message - first link I saw had good info

https://www.google.com/webhp?sourcei...bih=1087&ion=1

Sorry, forgot to tag this thread as resolved.

If I remembered it correctly, after 3years, it is the .NET and Java [int] variable. One of them is using unsigned integer as default int, while the other one is signed integer.