Top "Fiddler" questions

Fiddler (aka "Fiddler classic") is a .net based web debugging proxy, which allows you to log, examine, modify and replay HTTP/HTTPS traffic from your computer.

Fiddler not capturing traffic from browsers

I've been using Fiddler for quite a while, but all of a sudden it no longer captures internet traffic. I'm …

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Chrome:The website uses HSTS. Network errors...this page will probably work later

I am developing against localhost. This morning right after I used fiddler I started getting this error on chrome (works …

google-chrome fiddler
How do I get Fiddler to stop ignoring traffic to localhost?

When using Fiddler to monitor HTTP Requests & Responses in Internet Explorer it ignores all traffic directed to http://localhost.

localhost fiddler
How to configure Fiddler to listen to localhost?

I want to monitor HTTP traffic between a process on my local machine and another (server) process, also running on …

localhost fiddler
How do I monitor all incoming http requests?

I need to monitor my application from incoming http POST and GET requests originating from outside and sometimes inside the …

asp.net http fiddler wireshark
How to use Fiddler to monitor WCF service

I have a WCF service that accepts a complex type and returns some data. I want to use Fiddler to …

wcf fiddler
Wireshark vs Firebug vs Fiddler - pros and cons?

Recently, I came across an issue where a CGI application is not responding. Symptom is Firefox displaying: Transferring data from …

debugging web-applications firebug fiddler wireshark
Filter Fiddler traffic

Is it possible to instruct Fiddler to only show me traffic directed to a specific host name? In other words, …

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Use Fiddler with Basic Authentication to access RESTful WebAPI

I have a WebAPI that works without issue. I have tested locally and deployed to my server and configured this …

rest asp.net-web-api fiddler
How do you remove the root CA certificate that fiddler installs

Fiddler helpfully offers to add a unique root CA certificate to intercept HTTPS traffic. Once this certificate has been added, …

ssl certificate fiddler