TcpClient Close method problem

[Sharpov]

Hello,

 

I send some data to a server (but don't wait for any answer) with this piece of code:

 

private void Send()
{
   TcpClient client = null;

   try
   {
       client = new TcpClient(s_host, s_port);
   }
   catch
   {
       PushLog("Failed to connect to {0}:{1}...", s_host, s_port);
       return;
   }

   NetworkStream networkStream = client.GetStream();
   StreamWriter streamWriter = new StreamWriter(networkStream);
   streamWriter.AutoFlush = true;
   streamWriter.NewLine = "\r\n";

   try
   {
       string req = string.Format("foo", s_loginName);
       streamWriter.WriteLine("POST /myendpoint?message=foo HTTP/1.0\r\nContent-Type: text/plain; charset=utf-8\r\nContent-Length: 0\r\n");
   }
   catch (Exception err)
   {
       PushLog("Failed to send message...\n-> {0}", err.Message);
   }
   finally
   {
       networkStream.Dispose();
       client.Close();
   }
}

 

The problem I have with this code is that the server receives my message approximatively 1 time out of 10.

But if I remove the finally block (NetworkStream and TcpClient closing), the server receives my message every time.

 

What am I doing wrong here?

I'm pretty sure I have to close my connection and I read in some doc that the underlying NetworkStream should also be closed.

 

Why is it working sometimes?

Should I specify a SendTimeout value?

 

Thanks for your help!

[PlausiblyDamp]

Have you tried manually calling Flush on the StreamWriter before disposing of the underlying stream, just to see if that makes a difference?