How to replace an online folder by local folder?

[Yevgeniy]

I'm struggling to make my browser fetch all files from local folder instead of all files from target online folder.
I want to achieve it using Fiddler's AutoResponder.
As I understood, I should write corresponding regular expressions for target online folder and for local folder as well. But I can't figure out how they should look. In another proxy debugger, Charles Proxy, it would be basically this easy:

location: http://examplesite.com/target_folder/*
local path: c:\local_folder

Same approach didn't work in Fiddler for me. Then I've found some example (https://groups.google.com/forum/#!topic/httpfiddler/BWfUoCuih8k) by Eric Lawrence, but either it is irrelevant, or I'm applying it incorrect. Anyway it doesn't work for me too. I've tried something like this:

REGEX:^http://examplesite.com/target_folder/(.+)$
REGEX:C:\local_folder\$1

So, please, give me a hint, how regexps for replacing whole folder (online) to whole folder (local) should be written in Fiddler.

If there is another way beside regexps, I would like to know it as well.
Thank you!

[Eric R | Senior Technical Support Engineer]

Hi Yevgeniy,

I am not certain that REGEX will be the best approach for this. There is a nice post on OhadSoft's blog about Mapping Network Resources to Local Files using Fiddler that may be helpful.

I hope this helps. Please let me know if you need any additional information. Thank you for using the Fiddler Forums.

Regards,

Eric R | Technical Support Engineer
Progress Telerik

[Yevgeniy]

Thank you for your reply, Eric!
I'm afraid, Mapping network resources to local files using Fiddler post doesn't fit in my case as there explained how to map single online file to single local file, so Fiddler is able to replace one by another - and I want to map whole folder at once.
Example:

1. There is some site "examplesite.com"
2. This site includes folder named "target_folder", which contains this files:

• picture1.jpg
• picture2.jpg
• code1.js
• code2.js
• configuration1.json
• sound1.mp3

I have copy of that folder on my pc. And I don't want to manually map in AutoResponder "picture1.jpg" (online) to "picture1.jpg" (local), then "picture2.jpg" (online) to "picture2.jpg" (local) etc. Because mapping file by file may be very time consuming, especially in case there are lot of files within folder.

Instead of mapping file by file I want to give this instruction to AutoResponder:

"when http response includes file, whose parent folder is "examplesite.com/target_folder", - replace it by same file from here "C:\local_folder" ".
So then "picture1.jpg", "picture2.jpg", "code1.js", "code2.js", "configuration1.json" and "sound1.mp3" will be replaced by local files with same name and format automatically.

I'm pretty sure that can be done using Fiddler's AutoResponder, but I don't know how exactly to do it.
So, any suggestions would be much appreciated :)

[Eric R | Senior Technical Support Engineer]

Hi Yevgeniy,

Apologies for my misunderstanding. In this case, Regular Expressions might be the better approach. See the AutoResponder Regular Expressions Knowledge Base Article for more details.

I hope this helps. Please let me know if you need any additional information. Thank you.

Regards,

Eric R | Technical Support Engineer
Progress Telerik

[shashank]

How can we redirect a request url (containing https protocol) to a local file via C# fiddler extension. I tried using oSession.fullUrl = <Complete local file path> but it throws error of URI schema not being https, https and ftp. Is there any way how we are achieving the same via AutoResponder, the same can be achieved via extension ? Thanks in advance for help :)

[Nick Iliev]

Hey shashank,

 

Check the flag x-replywithfile  as taken from the FIddler book.

Respond to a request with a file loaded from the \Captures\Responses folder

if (oSession.PathAndQuery=="/version1.css") {   oSession["x-replywithfile"] ="version2.css"; }

OnBeforeRequest or OnBeforeResponse