Response aborted from many clients after fiddler use for a while

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Windows
Ryuu
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Ryuu asked on 08 Jul 2021, 10:57 AM | edited on 08 Jul 2021, 10:57 AM

Sometimes when I use fiddler for a while, connection will closed by client when response is large (random for small/medium size).

With browser (Firefox and Chrome), I'll get
SSL_ERROR_BAD_MAC_READ or
SSL_ERROR_RX_RECORD_TOO_LONG

Even in emulator (android), it's the same. Response time is not different from when it's normal.

More info:
- Problem persist even without Fiddler script
- But if I use oSession.Ignore() in Fiddler script, it'll run fine.
- If I close Fiddler, it'll run fine.
- Restart Fiddler not eliminate the problem but restart the computer works.
- If I replay (r) in Fiddler, it has no abort icon in new request
- I try to export .saz the only different is: Process name and PipeInfo CltReuse="true" (ClientPipeReused?) so I try uncheck "Reuse client&server connections" in Options. But it's still ClientPipeReused and aborted > This is only my testing. But I think it's unrelated, replay is issue by Fiddler so it just not abort it own request.

It's not a big deal as I can restart my pc and it's not too often but it would be good if there's a way to fix a problem without restarting the pc.

Lini
Telerik team
commented on 12 Jul 2021, 02:04 PM | edited

Hi,

The default generator might have problems if it runs for a long time and generates a lot of certificates (one for each captured web site). So you can also try going to the Fiddler HTTPS options and in the generator options, check the "Clear server certs on exit" option. This could fix the issue where you see the errors even after restarting Fiddler.

You can also try using a different certificate generator - e.g. the CertMaker addon from here - http://fiddler2.com/r/?fiddlercertmaker). More information about it is available in this blog post - https://www.telerik.com/blogs/faq---certificates-in-fiddler 

 


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