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i want to timeout and retry a session that's already send out to server but server is under heavy load and can't response in a reasonable time so i want to retry the request if the server didn't respond in xx second after the request is send is that possible with fiddler?
Nick Iliev
Telerik team
 answered on 18 Apr 2022
0 answers
677 views

Hi,

I lost my data after recovering the data when I'm opening the saz file it shows me this error. "The selected file is not a Fiddler-generated .SAZ archive of Web Sessions."  Picture attached. A quick response will be highly appreciated 

Regards,
Raph

Raph
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 asked on 14 Apr 2022
1 answer
3.5K+ views

Fiddler Classic v5.0.20211.51073 for .NET 4.6.1 and Android 9.

  1. install Fiddler.
  2. Install "CertMaker for iOS and Android".
  3. open Fiddler.
  4. Check "Decrypt HTTPS traffic" in Option.
  5. Install the certificate when the install dialog box appears.
  6. set "Protocols" to "<client>;ssl3;tls1.2".
  7. add the following code to the end of "static function OnBeforeRequest(oSession: Session)" in "Fiddler Script".
        if (oSession.HTTPMethodIs("CONNECT"))
        {
            oSession["https-DropSNIAlerts"] = "yup";
            FiddlerApplication.Log.LogString("Legacy compat applied for request");
        }
  1. Restart Fiddler.
  2. set Android proxy settings to the Fiddler address.
  3. access Fiddler's website with an Android browser and download the certificate.
  4. Install the certificate.
  5. move the converted certificate in /data/mics/user/0/cacerts-added/ to /system/etc/security/cacerts/.
  6. set the owner and group of the moved file to root and set permissions to rw-r--r--.
  7. Remove the first installed certificate
  8. Restart Android.
  9.  

When I access an HTTPS site with Chrome after following these steps, I get the message "NET::ERR_CERT_AUTHORITY_INVARID" and cannot access the site. Fiddler just comes up with CONNECT. At the stage of just installing in the user area in 11., I am able to access the HTTPS site from Chrome and it is decrypted in fiddler. However, when I move it to the system area, I am having trouble communicating with it. The list of trusted credentials for the system in the settings app reflects it correctly and I can view the information inside by tapping on it. Why is there an error?

PS: When I run Chromium Edge on a PC running Fiddler and look at the serial number of the root certificate for the certificate to the https site and compare it to the serial number in the CA certificate list installed on the Android system, it matches. The former does not cause an error, but the latter does.

Nick Iliev
Telerik team
 answered on 13 Apr 2022
5 answers
3.0K+ views

Hello,

I have set up fiddler on my android phone and it works well but some services like netflix, youtube just say that there is no internet connection. While I installed the certificate for wifi and as AC certificate. How can I fix that ?

I attached the infos of the ipv4.fiddler:889.

Nick Iliev
Telerik team
 answered on 25 Mar 2022
1 answer
1.8K+ views

This is what I am using

1. Proxifier

2. Fiddler Classic

My code makes web requests which are intercepted by Proxifier and forwarded to Fiddler Classic. 

Note: All 3 are on the same dev machine (127.0.0.1).

Earlier it was working smooth, now I get strange 502 errors in Proxifier. It happens randomly and only once every 10-15 requests. When I retry the curl request in my code, it executes successfully next time even without a sleep condition / any delay.

Note:

A) While I see the 502 error in the Proxifier log, the failed request is not visible in the Fiddler requests list. I am not sure what is the problem?

B) I only face this issue when using one particular API from eodhistoricaldata.com. I never face this issue if I use other API endpoints from the same provider

C) It started randomly few days ago. Before that, the code was working fine.

[03.24 15:33:50] php.exe - eodhistoricaldata.com:443 close, 1193 bytes (1.16 KB) sent, 2206 bytes (2.15 KB) received, lifetime <1 sec
[03.24 15:33:50] php.exe - eodhistoricaldata.com:443 open through proxy 127.0.0.1:8888 HTTPS
[03.24 15:33:56] php.exe - eodhistoricaldata.com:443 close, 1194 bytes (1.16 KB) sent, 441336 bytes (430 KB) received, lifetime <1 sec
[03.24 15:34:00] php.exe - eodhistoricaldata.com:443 open through proxy 127.0.0.1:8888 HTTPS
[03.24 15:34:01] php.exe - eodhistoricaldata.com:443 close, 1191 bytes (1.16 KB) sent, 16082 bytes (15.7 KB) received, lifetime <1 sec
[03.24 15:34:22] php.exe (32564) - eodhistoricaldata.com(134.209.140.199):443 error : Could not connect through proxy 127.0.0.1(127.0.0.1):8888 - Proxy server cannot establish a connection with the target, status code 502
[03.24 15:34:22] php.exe - eodhistoricaldata.com:443 open through proxy 127.0.0.1:8888 HTTPS
[03.24 15:34:23] php.exe - eodhistoricaldata.com:443 close, 1192 bytes (1.16 KB) sent, 2206 bytes (2.15 KB) received, lifetime <1 sec

 

Varun
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Iron
 updated answer on 24 Mar 2022
0 answers
209 views

Hello,

I am able to see my bar chart when designing my report, but when I click on Preview, the chart appears blank. I am not sure how to resolve this issue.

I have one datasource for my query, and another datasource for the parameter (paramApp). Ideally I want the client to select an Application Period and visually see how many applications were received, completed, etc.

Any help is greatly appreciated! 

 

 

Kristine
Top achievements
Rank 1
 asked on 14 Mar 2022
1 answer
202 views

Hello,

i would like to recover a request of an IOS app. this application has many security which means that to recover a request it is necessary to use an upstream proxy like smart proxy.
It’s possible to do this on ios with fiddler ?
or is it possible to change the proxy configurations so as not to be detected by the application ?

this application use https requests and it is after accepting the certificate for https requests that the application detects the fiddler proxy.

Thanks for your help 😉

Nick Iliev
Telerik team
 answered on 09 Mar 2022
0 answers
1.5K+ views
Newly created certs are expiring on the 22/1/22
Any suggestions?

Rick
Top achievements
Rank 1
 asked on 06 Mar 2022
1 answer
3.0K+ views

When I run an app as the Windows LOCAL SYSTEM account, using psexec, and try to access a WebService, it appears to be failing Authentication with the following error message:

No connection could be made because the target machine actively refused it 127.0.0.1:8888

I checked the logs, and this dates back to when I installed Fiddler and was using it to test this app by impersonating requests as the LOCAL SYSTEM account. I've tried looking through the settings and even uninstalled Fiddler, restarted the machine, but I continue to get this error on my machine?

It's not happening on other machines or when I run the app at my own account on my machine. I'm really stumped here, I read this link, but uninstalling it didn't work and I have no proxy set on the machine, it's set to Automatically detect settings:

https://www.telerik.com/forums/disable-fiddler-as-system-proxy

Nick Iliev
Telerik team
 answered on 28 Feb 2022
1 answer
337 views

EDIT: The title might be confusing, but I can't edit it. I mean I want to update the public version of AppContainer Loopback Utility.

I find that "AppContainer Loopback Utility" on https://www.telerik.com/fiddler/add-ons is still at the version of 1.2.0.1 .

And the latest release of Fiddler Classical has 1.4.3.0 .

The reason for the request is that version 1.4 can read the list through the registry when it is not available through the system API (see attach pic ). But version 1.2 can not do that.

I don't know if there are infringement issues if I take "AppContainer Loopback Utility" from Fiddler Classical and embed it in a third party application. So I hope Telerik can update the public version.

Nick Iliev
Telerik team
 answered on 21 Feb 2022
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