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From "Ian Dykes" <ian.dy...@esendex.com>
Subject RE: UdpAppender uses UdpClient?
Date Thu, 25 Oct 2007 15:17:25 GMT
Ahh, that does explain something.  I'll give it a go and see if it
works.

Thanks
Ian 



Ian Dykes
Software Developer
Esendex Ltd

T: +44 (0)115 852 5762
F: +44 (0)115 852 5757
Email: ian.dykes@esendex.com
Web: www.esendex.com
Blog: http://devproj20.blogspot.com/

Esendex: Connect and Communicate
-----Original Message-----

From: Walden H. Leverich [mailto:WaldenL@TechSoftInc.com] 
Sent: 25 October 2007 16:13
To: Log4NET User
Subject: RE: UdpAppender uses UdpClient?

Are you setting the LocalPort for the RemoteSyslogAppender? You
shouldn't be. In the InitializeClientConnection of the UdpAppender you
should see:

       if (this.LocalPort == 0)
        {
            this.Client = new UdpClient();
        }
        else
        {
            this.Client = new UdpClient(this.LocalPort);
        }

If localport is 0 then the client is created w/out a port, so you should
get a random (and unused) one. If you've set the local port, then yes,
the second attempt to open will fail since you've already bound
something to that port.

-Walden

--
Walden H Leverich III
Tech Software
(516) 627-3800 x3051
WaldenL@TechSoftInc.com
http://www.TechSoftInc.com

Quiquid latine dictum sit altum viditur.
(Whatever is said in Latin seems profound.)


-----Original Message-----
From: Ian Dykes [mailto:ian.dykes@esendex.com]
Sent: Thursday, October 25, 2007 6:22 AM
To: Log4NET User
Subject: UdpAppender uses UdpClient?

Hi,

We're looking to use the RemoteSyslogAppender from a bunch of Windows
services running on the same machine, sending log events to one server
listening to one port.  Looking through the source, RemoteSyslogAppender
inherits from UdpAppender, and UdpAppender uses a UdpClient object.  If
I try to start two applications on the same machine aiming to send log
event to the same remote sys log I get an error saying "only one usage
of socket address is normally permitted".

I've seen this exception before in my own work with sockets, and I got
around it by using a Socket instead of UdpClient, but I suspect you can
set the ExclusiveAddressUse property as well.  I can't see a way of
setting this property through the appender though.

Is there any way I can use multiple UdpAppenders/RemoteSyslogAppenders
sending to the same address/port on the same machine?

Thanks
Ian 

Ian Dykes
Software Developer
Esendex Ltd

T: +44 (0)115 852 5762
F: +44 (0)115 852 5757
Email: ian.dykes@esendex.com
Web: www.esendex.com
Blog: http://devproj20.blogspot.com/

Esendex: Connect and Communicate
 
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