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POServer not receiving write() here and there
 

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  1. POServer not receiving write() here and there
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    <p>I have a hard time figuring out weather it's the servers fault, or a bug in my application somewhere. If I look in Wireshark it looks as if it's sending the data to the server; but how can I be sure it's received?</p> <p>In regards to the server's fault.. it probably isn't, as it's a Java app running in the browser (I Just make my own client for it) and I can execute the commands just fine through the browser all the time. It also works in my app, but after 2-3 commands to the server (still connected), it stops working - like something is blocking the actual sending.</p> <p>Hope for some guidance. Maybe the loop has something to do with it? If I restart the application, the commands work fine again, so it's after some time it stops working. Actually had this bug for over 5 years now; but just compiled the app again and it's still a problem :-)</p> <p>Thanks for reading.</p> <p>I should probably mention that inside the HandleIncomingMessages() function I have this thread running sending a keep-alive to the server (character "g").</p> <pre><code>// Create send-alive thread. Thread aliveThread = new Thread((ThreadStart)delegate { do { Connection.Send("g"); Thread.Sleep(100000); } while (true); }); aliveThread.Name = "Send-alive Thread"; aliveThread.Start(); aliveThread.IsBackground = true; </code></pre> <p>Here's some snippets of how it works.</p> <pre><code>client = new TcpClient(server, port); //client.NoDelay = true; // both has same result using (stream = client.GetStream()) using (reader = new StreamReader(stream, Encoding.ASCII)) { do { try { // Read the stream into the buffer. while ((readBuffer = reader.ReadLine()) != null) { ConnectionHelper.HandleIncomingMessage(readBuffer); } } catch (Exception E) { WriteLine("CreateConnection() Exception: " + E.Message); WriteLine("CreateConnection() Exception: StackTrace: " + E.StackTrace); // Exit on error. Environment.Exit(1); } } // do while (stream.DataAvailable); // Clean up. reader.Close(); stream.Close(); client.Close(); WriteLine("Disconnected."); } </code></pre> <p>HandleIncomingMessage() just parses the data and sends commands to the Send() function below.</p> <pre><code>internal static void Send(string message) { if (stream.CanWrite) { byte[] byteData = Encoding.ASCII.GetBytes(message + Environment.NewLine); Encoding enc = Encoding.ASCII; WriteLine("Send(): " + enc.GetString(byteData)); // Send &lt;message&gt; stream.Write(byteData, 0, byteData.Length); stream.Flush(); return; } WriteLine("Send(): Exception: Cannot write to stream!"); } </code></pre>
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    1. USMichael
    1. USMichael
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    1. COHi dtb. Well, I'm not sending back what it sent to me - where do you draw this conclusion at? :-). The HandleIncomingMessage() parses incoming data like: <space>,Hello - I then just send back something else using the Send() function I pasted above. I can't help but think it has something to do with the two loops inside eachother.
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      1. POServer not receiving write() here and there
      1. USMichael
    2. COAt the very beginning of your code, you issue a ReadLine(), but you never do anything with it. In fact, readBuffer gets overwritten in the inner loop and you only HandleIncoming message if that second ReadLine() does not return null. What happens if only one line was sent? Your first readline would consume it, causing your second readline to return null.
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      1. POServer not receiving write() here and there
      1. USTung
    3. COHi Tung. Thanks for replying. Correct - that's because I do some initial handling using the first readline, you can ignore that. But this is not a read question, but a write question.. I do receive all the reads, as I can follow using the browser what happends; I can see the player (application) visually. My commands executed to the server stops working after a while.
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      1. POServer not receiving write() here and there
      1. USMichael
 

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