I've not developed for silverlight, but normal .Net apps have the same
limit. The System.Net.ServicePointManager.DefaultConnectionLimit
property limits the number of connections, default is two... Maybe this
is available in silverlight?

David



-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Nick Hodge
Sent: Tuesday, 23 June 2009 12:23 a.m.
To: [email protected]
Subject: RE: Silverlight limited to 2 simultaneous connections?

>From the mighty Jorke:

http://blogs.msdn.com/wenlong/archive/2009/02/08/why-only-two-concurrent
-requests-for-load-testing.aspx

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Jordan Knight
> Sent: Monday, 22 June 2009 10:19 PM
> To: [email protected]
> Subject: RE: Silverlight limited to 2 simultaneous connections?
> 
> So go  crazy and use a few Silverlight controls and the new instance
to
> instance comms stuff in SL3 to load a few at once :P
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of John OBrien
> Sent: Monday, 22 June 2009 9:45 PM
> To: [email protected]
> Subject: RE: Silverlight limited to 2 simultaneous connections?
> 
> I think you may be onto something Jordan. The application that has
> brought
> this to my attention is not server restricted but I appreciate your
> comments
> Caleb, they are great general suggestions but it seems that
Silverlight
> is
> ignoring them.
> Take a look at:
> http://soulsolutions.com.au/silverlight/blacklight/
> 
> It is rendering 6 Bing map controls inside a single Silverlight
> application.
> The tiles are coming from 4 different domains and yet only two request
> at a
> time are coming from Silverlight. I'm using IE8.
> 
> The performance is horrible, you have to wait for each DeepZoom image
> to
> complete before the next one starts. Fiddler confirms sets of 2
> requests.
> 
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Jordan Knight
> Sent: Monday, 22 June 2009 9:22 PM
> To: [email protected]
> Subject: RE: Silverlight limited to 2 simultaneous connections?
> 
> I'd have thought it would be a lowest common denominator problem
> myself...
> the crappest browser can do 2 at once so thats what Silverlight
> supports to
> maintain the best compat?
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Caleb Jenkins
> Sent: Monday, 22 June 2009 9:13 PM
> To: [email protected]
> Subject: RE: Silverlight limited to 2 simultaneous connections?
> 
> John - generally that's a server restriction, and something that has
> been
> well documented on for IIS as well as various strategies in the HTML
> communities have been developed to help "get around" this.
> 
> For IIS its important when you are using IIS as an application /
middle
> teir
> / wcf server with an IIS front end web server. In that scenario you
> still
> want the limitation from the front end server to the clients, but you
> want
> to increase the allowed cnnection from the app server to the UI
server.
> 
> The more general html/web strategies involve breaking you resources in
> to
> various sub domains/servers. Images.domain /css/js/html can be placed
> on
> various "domains" to increase your simultanious connections from 2 to
> 8. The
> other strategy is to increase individual payloads and decrease number
> of
> requests. This plays out by combining multiple images on to a single
> image
> and the using css and css "sprite" support to slice and lay out the
> images
> client side. Take a look at the bing.com home page for an exaple of
> that.
> The "blurry" boxes are actually attached to the main image.
> 
> Hope that helps! (I'm going to blame all typo's on my phone's
"intelli-
> type"
> and the complete lack of a spell check :)
> 
> Caleb Jenkins
> 
> [email protected]
> m: 469.867.4552 | b: developingUX.com
> 
> [*] Improving - It's what we do!
> (send from Windows Mobile 6)
> 
> 
> ________________________________
> From: John OBrien <[email protected]>
> Sent: Monday, June 22, 2009 2:16 AM
> To: [email protected] <[email protected]>
> Subject: Silverlight limited to 2 simultaneous connections?
> 
> Anyone know why Silverlight2 seems to be restricted to 2 simultaneous
> requests only?
> I have changed the browser settings to allow 8, put in 4 different
> domains
> to allow for 8 and even used firefox that supports 8 natively with no
> luck.
> 
> Is there a configuration somewhere at the plugin level to change this?
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