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I have a SPA application using Durandal.

My program starts to have a http request periodically:

http://localhost:1551/f9750d8f8aa54265835e72d56d23144a/arterySignalR/poll?transport=longPolling&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAACM1YyjLngEiQsL54ET%2B%2FqwAAAAACAAAAAAADZgAAwAAAABAAAAAyZZfHz09psv64kIgPPwQNAAAAAASAAACgAAAAEAAAABMZImCidzdmb21ehxuGD4IoAAAAbazfW7CYR7y7HKb8JPt9ZH9b6fUDlZao60kBG662Vy%2Fb0IHwkwidthQAAAA1qSqnsCOheiNyXiINEyBPBAkqVg%3D%3D&messageId=d-79160814-B%2C0%7CC%2C4%7CD%2C0&requestUrl=http%3A%2F%2Flocalhost%3A2690%2F&browserName=Firefox&tid=5&_=1391326350868

I don't know where does it come from? As I remember I haven't added any reference to SignalR or something like.

How can I check what part of my code is generating this request? and then remove it maybe.

The technologies I'm using are:

  • Durandal
  • ASP.NET MVC 4.0
  • Knockout
  • ASP.NET WebApi
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This is coming from the browser link feature in Visual Studio 2013 in the Standard toolbar. It is code that allows Visual Studio to interact with browsers running the code, and should only show up when running it in debug mode.

To disable it (until the fix to the issue is made live in an upcoming update), follow the directions in #4 of the msdn page to disable it:

  1. Uncheck "Enable Browser Link" in the Browser Link menu item
  2. Set appSetting "vs:EnableBrowserLink" to "false" in web.config or debug=false.

Or you can just ignore it. It wont do any harm, will only happen locally, and should be fixed soon.

Also see this question and this question.

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  • Thanks, as a matter of fact it exactly came after I've upgraded to Visual Sutdio 2013
    – mehrandvd
    Commented Feb 2, 2014 at 7:54
  • 2
    Exactly what I needed to get rid of the network traffic clutter -- thank you!
    – Mass Dot Net
    Commented Apr 28, 2015 at 20:02
  • This helps to have real-time updates done in the files. Example, if you update a CSS, it reflects changes immediately. Unless you want this feature, turning off Browser link helps remove the network request clutters.
    – Mahesh
    Commented Mar 3, 2016 at 22:47
  • can we enable this feature in production in IIS for my app?
    – Ehsan Sajjad
    Commented Jul 19, 2016 at 22:29
  • I'm still getting this in visual studio 2015. After leaving a debug session running for 24 hours (the web app has a 5 second heartbeat) visual studio becomes slow and affects the whole machine.
    – user2728841
    Commented Nov 5, 2016 at 19:43

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