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.

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

 

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! 

 

 

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 😉

Newly created certs are expiring on the 22/1/22
Any suggestions?

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

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.

I am trying to capture API endpoints by enabling fiddler capture, however, my application do not proceed, instead, it throws an error as ERR_EMPTY_RESPONSE.

 

If I disconnect the Fiddler application works fine, but then I am unable to capture the request/response

Ive been getting this error about once a day and fiddler will crash. Im stuck on this and have no more ideas what i can do. 

im trying fiddler classic ( also might be called fiddler 4? im not sure)

 

Progress Telerik Fiddler Web Debugger

v5.0.20204.45441 for .NET 4.6.1
Built: Tuesday, November 03, 2020

64-bit AMD64, VM: 110.0mb, WS: 141.0mb
.NET 4.8 WinNT 6.1.7601 SP1

 

 

Any ideas?

Thanks

I have a problem with cert while using fiddler with android and I finally found the best solution. Change cert to generated by plug-in fiddlercertmaker.exe. By the way, anything in window such as Firefox browser fail to work properly with this type of cert. I already trust install and all. Can I set the system to use original fiddler cert when I use windows's process e.g. Firefox, or specific domain. Even by scripting in Fiddler Script, any solution is fine that I can use fiddler with browser too if solution exists.

 

Some website is accessible but it completely not in session list table, some of them cant access at all.

This is the whole error text (facebook):

Did Not Connect: Potential Security Issue

Firefox detected a potential security threat and did not continue to www.facebook.com because this website requires a secure connection.

What can you do about it?

www.facebook.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it.

If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem.