Fiddler is not displaying the traffic though page gets loaded fine on chrome. What could cause this issue as there are no filters.

I keep getting the error "HTTP Request specified an invalid port number" in Fiddler.

It looks like the problem is that Fiddler is appending a "1" to the front of my port number.

The address I am plugging into my web browser is http://ourlocalserver:14485/api/...

This works fine when Fiddler is not capturing traffic. As soon as I turn Fiddler on, it starts failing, and Fiddler logs the address as http://ourlocalserver:114485/api/...

Notice that the port is now 114485 instead of 14485.

How can I get Fiddler to stop modifying the port number so that my tests work correctly?

Very new to this technology, apologies if this is a basic question. I am trying to understand if I download Fiddler on my mobile phone (iPhone 6), if I can "sniff" wifi packets from laptops/other devices on the same wifi? 

I'm learning Fiddler .
I use Fiddler certificate inside browser web, but Can I install Fiddler Certificate inside every application for Windows ?
Help me !

I can monitor almost every packet that passes through my device, but only the ones from Apple such as "http://api.smoot.apple.com:443" "http://keyvalueservice.icloud.com:443" "http://api-glb-msp.smoot.apple.com:443" are all encrypted.

 

I followed all instruction and guides, trying to solve this problem.

Is the device required to be jailbroken to decrypt Apple traffics? Or is there a way to solve this?

Hi,

I am software engineer.
Regarding license, would you mind letting me know whether it is ok for me to use Fiddler for work or not?
I do not embed the fiddler to product.
I will only use to analyze web packet.

Thank you in advance.

Hi,

Is Fiddler web debugger is free for a commercial environment?

Thanks,

Best regards

Hi all,

I'm not sure if I understand the possibilities on how to use Fiddler. From what I can read (and can see from my monitoring results) it monitors all web browser traffic. But what if I want to monitor the behaviour of a setup.exe file (or install.com). I want to check if it downloads any files, and if so, what files and from what URL.

Can that be done? Many thanks in advance.

Hello

I have a problem with fiddler when using proxifier to redirect traffic to fiddler 127.0.0.1 : 8888

actually, every https traffic with proxifier redirect causing this problem "SAN Certificate"

I'm trying to replace a response, but it is aborted every time. The original response it is a 206 partial content, when I put it in autoresponder and select other file it gave a 200 ok and it is aborted by the client.