[BUG] Scripting Tool cannot handle URL querystring parameters containing square brackets

Proxyman version? (Ex. Proxyman 1.4.3)

2.19.0 (21900)

macOS Version? (Ex. mac 10.14)

10.14.3

Steps to reproduce

1. Enable SSL proxying for domain deliver.kenticocloud.com:
   1. Tools menu > SSL Proxying List.
   2. Check the Enabled SSL Proxying Tool checkbox.
   3. Add the domain deliver.kenticocloud.com to the Include List.
2. Create a script for deliver.kenticocloud.com:
   1. Scripting menu > Script List
   2. Create a new rule, and configure it with:
      • URL = *deliver.kenticocloud.com*
      • Method = GET
      • Pattern matching = Use Wildcard
      • Leave the Include all subpaths of this URL checkbox unchecked
      • Run Script on = Response only
      • Script:

        function onResponse(context, url, request, response) {
          console.log('response.statusCode = ' + response.statusCode);
          return response;
        }
        

   3. Click the Save & Activate button.
3. Click the Console button to open the Scripting Console.
4. In your browser (eg: Chrome), load this URL:

   https://deliver.kenticocloud.com/5ac93d1e-567d-01e6-e3b7-ac435f77b907/items?system.id[eq]=a5f68d0f-6c6c-4845-b4d4-6bda702f0c1c
   

5. In the Scripting Console, the following error is displayed:

   ----------------------------------
   01:23:48.444: [onResponse] with Request ID=15
   ❌Error: Couldn not build JSObject with URL=https://deliver.kenticocloud.com/5ac93d1e-567d-01e6-e3b7-ac435f77b907/items?system.id[eq]=a5f68d0f-6c6c-4845-b4d4-6bda702f0c1c
   

Expected behavior

The Scripting Console should display:

----------------------------------
01:23:48.444: [onResponse] with Request ID=15
response.statusCode = 200
01:23:48.446 onResponse() is executed!

Screenshot

Further details

If I remove [eq] from the URL:

- https://deliver.kenticocloud.com/5ac93d1e-567d-01e6-e3b7-ac435f77b907/items?system.id[eq]=a5f68d0f-6c6c-4845-b4d4-6bda702f0c1c
+ https://deliver.kenticocloud.com/5ac93d1e-567d-01e6-e3b7-ac435f77b907/items?system.id=a5f68d0f-6c6c-4845-b4d4-6bda702f0c1c

and then load this modified URL in Chrome, the Scripting Console displays the expected output:

----------------------------------
01:26:07.738: [onResponse] with Request ID=20
response.statusCode = 200
01:26:07.740 onResponse() is executed!

So it seems to be the [eq] querystring parameter in square brackets which is causing the Couldn not build JSObject with URL error ❌

There is some discussion online about whether square brackets should be percent-encoded ([] encoded as %5B%5D) to make a valid URL:

• [Stack Overflow] Is array syntax using square brackets in URL query strings valid?
  • "For many years, every browser has left square brackets in query strings unencoded when submitting the request to the server. As such, I imagine a huge portion of the web has come to rely on this behavior, which makes it extremely unlikely to change."

As an example, the Kentico Kontent Delivery API expects unencoded square brackets:

• https://docs.kontent.ai/reference/delivery-api#tag/Filtering-content
  • system.type[eq]=article
  • elements.price[lt]=10
  • elements.price[range]=10.5,50

So I think Proxyman's Scripting Tool needs to be able to support unencoded square brackets in querystring parameters, without crashing with the Couldn not build JSObject with URL error.