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Fiddler fixes my https calls

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james
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james asked on 06 Jul 2020, 08:27 PM

I have a .net app (using framework 4.7.1) making a simple call to fetch images from various sites. One site for some reason will always timeout the request. But if I use Fiddler as a proxy, then it always works just fine. The image URL also works just fine in a browser. I'm aware of the various things to look for when Fiddler seems to 'fix' your app, but none of them seem to apply here. I have tried using different protocols in options ... https ... protocols to see if I could get Fiddler to also fail in the same way, but no luck, it always succeeds. Even if I uncheck 'capture https connects' it works. 

Any ideas what Fiddler could be doing to make it work so I can fix my app?

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Nick Iliev
Telerik team
answered on 07 Jul 2020, 09:53 AM

Hi James,

 

Hard to say what exactly might be causing the timeout in your .NET application but you could try some of the suggestions provided in the following resources:

https://stackoverflow.com/questions/1030218/httpwebreqest-works-with-fiddler-on-otherwise-timeout

https://www.telerik.com/blogs/help!-running-fiddler-fixes-my-app-

 

Regards,
Nick Iliev
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