When I used 300 threads, a lot of tunnel to appeared after a while, and then all the following failed.

Hello there,

One of my clients can access a specific ftp site successfully but she can only access there from her laptop. According to the company (which gives this ftp service), she can access it from anywhere. 

For that, even if I am very new to Fiddler, I wanted to see what's going on behind the scenes. I enabled ftp connections to be captured via Fiddler.

The problem is that when I open Fiddler and try to open the ftp site, it simply writes "This FTP server requires login credentials". When I close the fiddler and try to open the ftp site again, it pops up the credentials screen (which I am currently failing). 

How can I let the credentials page to be popped-up so at least I can see what's going on?

Thank you

Melih

hello, I'm testing an android application, however, when configuring fiddler I get many lines with port 443 and tunnel to <host> 443, is there a way to decipher them? attached example image

I come to this product and forum on a mission and hope to learn a lot on the way. In the meantime, I am really stuck. My objective is to sniff the IMAP password coming from my iPnone to Gmail because like the idiot that I am, I forget the password and cannot now log into my account regularly, all I can do is get my email via the iPhone Mail app.

So, what I need to do is detect the IMAP password as it is sent over WiFi to the Gmail servers. Here is what I've done so far:

1) Installed the program on a Win 7 laptop.

2) Accepted the certificate it installed.

3) Checked to make sure there was a rule allowing incoming connections to any port for Fiddler.

4) Began following each instruction on https://docs.telerik.com/fiddler/Configure-Fiddler/Tasks/ConfigureForiOS

5) Enabled "Allow remote computers to connect.

6) Restarted Fiddler.

7) Identified the Fiddler machines' IP address.

8) And here is where the trouble started because I cannot complete the next task: Verify client iOS device can reach Fiddler by navigating in the browser to http://FiddlerMachineIP:8888. This address should return the Fiddler Echo Service page.

Every time I type it into the Safari bar on the iPhone, or Chrome on a laptop also connected to the same WiFi, I get an error that the page cannot be found. 3G/4G is turned off, so the phone is definitely using WiFi, as is the third laptop, and I cannot get anywhere with that address. I was wondering whether the router has something to do with this (Optimum) but I figured such a common issue would surely be listed in the instructions page, and moreover, this is all local and I thought the traffic doesn't even hit the router when on the local network, but I could be wrong.

Any help with this would be great...

And if I could also ask, once I get this working, what is the precise setup I need to use in Fiddler to find the name/password combination for my Gmail account. I assume I need to identify the exact capture line and click on it, but where would I see the data itself, and is there an easy way to identify what the line might say since it seems to capture so much and it's hard for a newbie like me to make sense of most of it.

Thanks so much for anyone who can help me!

My program is very simple, but a memory leak in the run-off after a period of time, because BUG appear in the customer so that way I do not reproduce, and there is another problem, everything is normal in the listening process, but will suddenly appear accept the request fails, chrome tips ERR_PROXY_CONNECTION_FAILED, after refreshing the page correctly, you can help me?

I wonder how one might set up fiddler core to be able to handle tests running a parallel. I saw a similar post but no resolution to it.

My first thought was that I could get my test to add a custom header to each request using a guid for example which means each test would get a unique header.

But in the BeforeRequest delegate how would I check that the proxySession has the header that matches that of the test?

I can read the headers in proxySession but I have no way of passing this header in from the test as this delegate is called from an event. 

Hello, i'm working on python script and when I want to stop Fiddler from module subprocess (or taskkill from windows) fiddler keeps running(and his proxy enabled) My question is there anyway quit it properly from external methods ? Thanks.

I have installed Mono 5.2.0 for OSX and MonoFiddler 4.4.8.4 Built for Linux, and I also run mozroots —import —sync for HTTPS, however, when I run mono Fiddler.exe , it said "NameError: name 'lldb' is not defined" 
"Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application."    

and the mono process exited unexpectedly!

and I want to know why.. 

 

 

hi, how can i disable fiddler4 follow last line ?

Hello,

 

I've been using FiddlerCore on Windows for some time now and it's been great. However some of my users have recently started to report

issues where the proxy fails to connect to anything. I've checked the logs and every time this user happens is because of BCCertMaker.

This is what's shown in the log:

Fiddler.BCCertMaker> Failed to create certificate for localhost: Key not valid for use in specified state. at System.Security.Cryptography.Utils.CreateProvHandle(CspParameters parameters, Boolean randomKeyContainer) at System.Security.Cryptography.Utils.GetKeyPairHelper(CspAlgorithmType keyType, CspParameters parameters, Boolean randomKeyContainer, Int32 dwKeySize, SafeProvHandle& safeProvHandle, SafeKeyHandle& safeKeyHandle) at System.Security.Cryptography.RSACryptoServiceProvider.GetKeyPair() at System.Security.Cryptography.RSACryptoServiceProvider..ctor(Int32 dwKeySize, CspParameters parameters, Boolean useDefaultKeySize) at BCCertMaker.BCCertMaker.ConvertBCPrivateKeyToDotNet(RsaPrivateCrtKeyParameters bcPVK, String sKeyName) at BCCertMaker.BCCertMaker.CreateCertificateFromCA(String sCN, X509Certificate caCert, AsymmetricKeyParameter caKey) at BCCertMaker.BCCertMaker.MakeNewCert(String sHostname)

 

I've done research on this error and it's not clear what it's cause is but I've found that it can be solved by deleting

the "Crypto" folder in %AppData%\Microsoft\. This is clearly not ideal and would appreciate if someone had an idea on how to work

around this issue in the future.

 

Thanks.