Hi!

If I set upstream socks proxy (SSH tunnel via Putty) in Tools -> Fiddler Options -> Gateway, traffic doesn't go through it.

If I set it via X-OverrideGateway in rules, works like a charm. Is it possible to fix it?

Regards,

Eugene

Fiddler listens 8888 but can send any responce to 8888 ?



Hello ,

I add

ic function OnBeforeRequest(oSession: Session) { oSessiom.host=oSession.hostname +":8080";
this and my program using proxy 127.0.0.1:8888 and fiddler captures what my program sent.

My question is , in inspectors there is a response screen , fiddler can send the responce to 127.0.0.1:8888 , i want to capture that responce with my program ?

Thank you.

To Whom It May Concern:
I am trying to download/install the latest version of Fiddler Web Debugger tool in order to develop the performance test script for load testing.  
Fiddler is unable to capture the HTTPS traffic from web application, system is displaying "SSL Server probably obsolete.

See attached with a screenshot/log.zip file for more details.

Thanks,

William Truong

Hi!

Exception text is "The handshake failed due to an unexpected packet format".

Have tried enabling tls1.1 and tls1.2, didn't work. Any ideas? (I don't own the server, unfortunately)

Thanks in advance! 

Regards, Eugene

​

Hello,

I just wanted to let people know that the https decryption stopped working for me this morning after upgrading from 4.6.0.2 to 4.6.1.0

Fortunately I found an old installer on my pc (version 4.5.1.0) so I'm still able to work.

I'm using fiddler to monitor traffic from apps to google-analytics to verify that correct events and screenviews are being sent.

Thanks for reading.

Hello,

I was wondering if there's some sort of offline documentation bundle that I can use while working offline (for example on the road or in an isolated network).

Thanks.

Hello, this is my first time using FiddlerCore and am trying to grasp the concepts behind it. I am developing a simple project that should block websites that are specified in a database, and block all sites if the user is browsing at a time that is set by the administrator. It is for a school project. For now, I have hard-coded the site I want blocked: "facebook.com". Below is the code:

 

void FiddlerApplication_BeforeRequest(Session oSession)
        {
            if (oSession.url.Contains("facebook.com"))
            {
                oSession.utilCreateResponseAndBypassServer();
                oSession.oResponse.headers.SetStatus(307, "Redirect");
                oSession.oResponse["Cache-Control"] = "nocache";
                oSession.oResponse["Location"] = "http://microsoft.com";
                oSession.utilSetResponseBody(GenerateErrorMessage("Internet Time", "The request was set at a time interval that is blocked by the " +
                    "administrator(s) of this computer", oSession.fullUrl, "--"));
                return;
            }
        }

 However, I am getting an ERR_TUNNEL_CONNECTION_FAILED message in google chrome and I am getting a page cannot be displayed in internet explorer. Basically what I would like is if a site is block, display the html in the browser specified in oSession.utilSetResponseBody(GenerateErrorMessage("Internet Time", "The request was set at a time interval that is blocked by the " + "administrator(s) of this computer", oSession.fullUrl, "--"));

 

This works in all sites that do not have "https:". For ex: I am getting my desired result that I want if I try to block "microsoft.com".

Any help is appreciated. 

A while ago I wrote a simple .har parser which I still use sometimes. It works perfectly fine for the files from FF and Chrome. Recently I have tried Fiddler and found it very useful, however, my parser failed to parse Fiddler' .har

When I looked into this .har I can see it has no line delimiters which makes it hard to parse.

Has it been done on purpose or I can change it somehow? Basically, I would like to have the same format as produced by Chrome and FF

Hi,

I have a web application that sends an XML POST from the browser and I am using Fiddler to capture the body of the XML being sent out to ensure that the proper information is being sent from the application. I can see the POST to localhost:12345 captured in Fiddler, but when my co-worker clicks on the TextView tab in the Inspectors it is empty. This works fine on my machine and I am able to view the XML information in the TextView tab. This also works as expected for some of my other co-workers so it seems to be something specific with her machine that is interfering with the ​request. I observe this behavior whether she is connected to VPN or in the office using the network directly it doesn't appear to be an issue with the VPN.

We are using IE to view this information and my co-workers and I are using versions 10 and 11. I have looked at both setups (on my machine and my co-worker) and they are identical. Settings in my Connections tab for Fiddler Options are set to port 8888, allow remote computers to connect, reuse client connections, reuse server connections, act as a system proxy on startup, monitor all connections and <-loopback>; as a bypass for Fiddler. I tried to remove the loopback on my co-worker's machine but that did not resolve the issue. The gateway is set to use system proxy and HTTPS is set to capture and decrypt for all processes.

I have also had her try running Fiddler as an Admin and tried disabling the anti-virus programming we have on our company-issued laptops but neither of those seemed to have worked. Is there something else I'm missing here? Thanks.

 

Best Regards,

Randy

Hello,

I downloaded the most new version of Fiddler.

When I start it and enable "capture traffic" option, I can't surf the internet, and there is no capturing.

Heres the image of the message I get on firefox:

http://www.pntbrother.com/wp-content/uploads/2014/11/proxy_server_refusing_connection.jpg

Same on chrome and edge.

Why its happening?

 

 ​