Databases
StackOverflow2013
Postsdbo
POC# Async Sockets Server Receive Problems
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POC# Async Sockets Server Receive Problems
    primarykey
    data
    text
    <p>I have implemented my Server application regarding this post here: <a href="http://www.codeguru.com/csharp/csharp/cs_network/sockets/article.php/c8781#Client1" rel="nofollow">http://www.codeguru.com/csharp/csharp/cs_network/sockets/article.php/c8781#Client1</a></p> <p>Sum up: I am using async Sockets ala BeginAccept(..), BeginReceive(..). My Server is capable of handling mutliple clients and everything works fine until a client performas two or more synchronous send operation without waiting some time. The client does not get any error and so is not notified, that the server does not get the second message! If the client waits approx. 100ms after the first send operation, everything works fine. I thought that when i use TCP i can ensure that the server receives the message. (Except there is an exception thrown)! Could you provide me a solution to fix this. </p> <p>Here are the WaitForData(..) &amp; OnDataReceive(..) Methods that i implemented in the server</p> <pre><code>public void WaitForData(MyClient client) { try { if (pfnCallBack == null) { pfnCallBack = new AsyncCallback(OnDataReceived); } iarResult = client.Socket.BeginReceive(client.DataBuffer, 0, client.DataBuffer.Length, SocketFlags.None, pfnCallBack, client); } catch (SocketException se) { MessageBox.Show("SocketException@WaitForData" + se.Message); } } public void OnDataReceived(IAsyncResult asyn) { try { MyClient user= (MyClient)asyn.AsyncState; int iRx = user.Socket.EndReceive(asyn); byte[] receivedData = user.DataBuffer; MemoryStream memStream = new MemoryStream(); BinaryFormatter binForm = new BinaryFormatter(); memStream.Write(receivedData, 0, receivedData.Length); memStream.Seek(0, SeekOrigin.Begin); MyMessage msg = (MyMessage)binForm.Deserialize(memStream); switch (msg.Command) { case (MyMessage.MyCommand.ConnId): this.connId = (int) msg.MyObject; tsslConnStatus.Text += " | ID: " + connId.ToString(); break; case (MyMessage.MyCommand.Text): MessageBox.Show(msg.MyObject.ToString()); break; } WaitForData(server); } catch (ObjectDisposedException ode) { MessageBox.Show("ObjectDisposedException@OnReceiveData" + ode.Message); } catch (SocketException se) { MessageBox.Show("SocketException@OnReceiveData" + se.Message); } } </code></pre> <p>The CLIENT calls a synchronous SEND METHOD TWICE or MORE! server INSTANCEOF MyClient</p> <pre><code>if (server.Socket.Connected) { BinaryFormatter bf = new BinaryFormatter(); MemoryStream ms = new MemoryStream(); bf.Serialize(ms, message); MyMessage = new MyMessage(something); server.Socket.Send(ms.ToArray()); } </code></pre> <p>so, i think this code snippets must be enough for you to get the idea i was trying to use! If you need further details or code snippets, just tell me i will post it!</p> <p>Thanx!</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMartin F.
    1. USMartin F.
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTDuplicate
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POC# Async Sockets Server Receive Problems
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POC# Async Sockets Server Receive Problems
      1. USAlex Essilfie
      1. VTFavorite
    3. VO
      singulars
      1. POC# Async Sockets Server Receive Problems
      1. This table or related slice is empty.
      1. VTUpMod
    1. COWith the SerialPort.OnDataReceived handle I learned, that the handler is called, when the transtition "idle"->"received" occurd. I hat to read until no data is available. Probably something similar here.
      singulars
      1. POC# Async Sockets Server Receive Problems
      1. USharper
    2. COI would not expect to receive the complete message in the handler. Keep care for incomplete messages.
      singulars
      1. POC# Async Sockets Server Receive Problems
      1. USharper
    3. COto be honest, i don't know exactly how those "transitions" can be accessed and read?
      singulars
      1. POC# Async Sockets Server Receive Problems
      1. USMartin F.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload