[Mono-list] Weird remoting problems under Windows.

[Lluis Sanchez]

Hi,

My guess is that your problems are due to GTK code running in threads
other than the GUI thread. The remoting infrastructure has its own
thread pool, and remote calls are executed in arbitrary threads taken
from that pool. A solution would be to dispatch all incoming calls in
the GUI thread using ThreadNotify or something like that.

Lluis.

On dv, 2005-05-20 at 16:00 -0700, George Farris wrote:
> I have an app that will remote and run under Linux great but when run
> under Win2k it works a few times and then the entry widget no longer
> shows up.  It's very simple, the client connects to the remote object
> and pops up a simple window asking for a line of text.  There are two
> buttons (cancel, print).  Code follows:
> 
> Like I say I can run the server under Linux forever but under windows it
> goes weird and displays everything but the entry widget after working a
> couple of times.
> 
> Compiled under Linux, mono 1.0.5 and gtk#-1.9.2
> Windows 2000 has the mono-1.1.7 version.
> 
> Any help greatly appreciated.  
> 
> 
> 
> 
> Remoting server code:
> ---------------------------------
> using Gtk;
> using System;
> using System.IO;
> using System.Runtime.Remoting;
> using System.Runtime.Remoting.Channels;
> using System.Runtime.Remoting.Channels.Http;
> 
> class MainClass
> {
> 	public static void Main(string[] args)
> 	{
> 		Console.WriteLine("Cupsacc-server running, listening on port
> 8080...");
> 		ChannelServices.RegisterChannel(new HttpChannel(8080));
> 
> RemotingConfiguration.RegisterWellKnownServiceType(typeof(AccountNumber), 
> 				"control", WellKnownObjectMode.SingleCall);
> 		
> 		Console.WriteLine("Application loop...");
> 		Console.ReadLine();
> 	}
> }
> 
> public class AccountNumber : MarshalByRefObject 
> {
> 	public string GetAccount()
> 	{
> 		Application.Init ();
> 		MyWindow w = new MyWindow ();
> 		Application.Run ();
> 		return (w.AccountNo);
> 	}
> }
> 
> 
> 
> Gtk code
> ----------------------------------------------------------
> using System;
> using Gtk;
> 
> public class MyWindow : Window {
> 	
> 	private string returnValue;
> 	private Entry accountNo;
> 	private Window window;
> 	
> 	public MyWindow () : base ("Enter account code")
> 	{
> 		window = this;
> 			
> 		//this.SetDefaultSize (400, 300);
> 		this.DeleteEvent += new DeleteEventHandler (OnMyWindowDelete);
> 
>         /* Sets the border width of the window. */
>         this.BorderWidth = 10;
> 
>         HBox entrybox = new HBox();
>         entrybox.BorderWidth = 6;
>         entrybox.Spacing = 6;
> 
>         HBox buttonbox = new HBox();
>         buttonbox.BorderWidth = 6;
>         buttonbox.Spacing = 6;
>         
>         VBox vb = new VBox();
>         vb.Spacing = 6;
>         vb.PackStart(entrybox, false, false, 0);
>         vb.PackStart(buttonbox, false, false, 0);
>         vb.Show();
>         
>         this.Add(vb);
> 
>         Label l = new Label("Account Number");
>         
>         accountNo = new Entry();
>         accountNo.Activated += accountNo_cb;
>         
>         Button print = new Button("Print");
>         /* Connect the "clicked" signal of the button to our callback */
>         print.Clicked += print_cb;
> 
>         Button cancel = new Button("Cancel");
> 		cancel.Clicked += cancel_cb;
> 
>         /* Pack and show all our widgets */
>         entrybox.Show();
>         entrybox.Add(l);
>         entrybox.Add(accountNo);
>         
>         buttonbox.Show();
>         buttonbox.Add(print);
>         buttonbox.Add(cancel);
> 
>         print.Show();
>         cancel.Show();
> 		this.ShowAll ();
> 	
> 	}
> 	
>     public string AccountNo
>     {
>     	get { return returnValue; }
>     }
> 
>     /* Our callback functions */
>     private void print_cb( object obj, EventArgs args)
>     {
> 	returnValue = accountNo.Text;
>         window.Destroy();        
>         Application.Quit();
>     }
> 
>     private void accountNo_cb( object obj, EventArgs args)
>     {
> 	returnValue = accountNo.Text;
>         window.Destroy();        
>         Application.Quit();
>     }
> 
>     private void cancel_cb( object obj, EventArgs args)
>     {
>         returnValue = null;
>         window.Destroy();
>         Application.Quit();
>     }
> 
> 	
>     void OnMyWindowDelete (object o, DeleteEventArgs args)
>     {
>         returnValue = null;
>         window.Destroy();	    
> 	Application.Quit ();
>     }
> }
> 
> 
> -- 
> George Farris   farrisg at mala.bc.ca
> Malaspina University-College
> 
>