Re: [gnet-dev] gnet-win32 message callback

[Andrew J Lanoix <alanoix umich edu>]

On Fri, 4 May 2001 wroberts1 home com wrote:

> about the 20 sockets limit:
> The problem is that winsock2 runs out of buffer space.
> I went into gnet_tcp_socket_server_new2() and added a WSAGetLastError()
> after the listen(), it returns WSAENOBUFS.  I changed the listen
> backlog to two and then i didnt get a no buffer error.  This is in win98.
> 
> Possibly the gnet_tcp_socket_server_new() needs a backlog arguement,
> rather than just the hardcoded 10.
OK. We will probably change gnet_tcp_socket_server_new2() and leave
gnet_tcp_socket_server_new() alone.
 
> It might also be a good idea to print the WSAGetLastError() in the
> error handler of gnet_tcp_socket_server_new2().  I dont know of any
> perror() equivalent in winsock.
I'll make this change also.

Andy

> 
> On Thu, May 03, 2001 at 11:03:22PM -0400, Andrew J Lanoix wrote:
> > 
> > On Thu, 3 May 2001 wroberts1 home com wrote:
> > 
> > > 
> > > I hate to disturb vacations, but..
> > > 
> > > 
> > > Too bad that GetMessages(&msg, gnet_hWnd, 0, 0) will block forever when the
> > > message is for gtk, since this callback is always called for gtk messages too.
> > > 
> > > The PeekMessage() will never block, so if the message is for gtk, it just
> > > falls out of gnet dll callback.  I dont know much about win32, but
> > > that GetMessage() in the IA_NEW_MSG and GET_NAME_MSG handlers might be need
> > > to get the message out the queue.
> > gnet's callback should not be called on any gtk events. (No one except
> > gnet should be posting to gnet_hWnd.) If this is happening, it could be a
> > bug in gtk or glib. Could you send me a sample program that shows this
> > problem? I won't be able to investigate until late next week at the
> > earliest.
> > 
> >  
> > > On another note..
> > > Another thing i observed is that I cant have more than 20 sockets open.
> > > I have one udp socket, and 24 tcp sockets each on a different source port.
> > > Binding the last five tcp will fail.  However, when I limit my
> > > application to 16 its fine.  I have no such troubles on linux.
> > That is odd. I will look into that. Do you have a sample program that
> > your can send me?
> > 
> > Andy
> >  
> > > 
> > > On Thu, May 03, 2001 at 06:46:34PM -0400, Andrew J Lanoix wrote:
> > > > 
> > > > That may work but the correct way is explained here:
> > > > http://www.gnetlibrary.org/pipermail/gnet-dev/2001-April/000016.html
> > > > 
> > > > Andy (still on vacation)
> > > > 
> > > > On Thu, 3 May 2001 wroberts1 home com wrote:
> > > > 
> > > > > 
> > > > > Apparently some messages for gtk will pass thru iochannel watch created
> > > > > buy gnet-win32 dll.  The gnet_MainCallBack() also gets called for gtk
> > > > > messages.  GetMessages() will swallow these messages and gtk events
> > > > > will be lost.  So i replaced it with:
> > > > >     PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE);
> > > > > 
> > > > > With this, the messages not meant for gnet are ignored, but not absorbed.
> > > > > 
> > > > > The messages I saw absorbed were for gtk button press/released and
> > > > > mouse leave/enter.
> > > > > 
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> > 
>