Bug 59101 - IOSPlatformServices.OpenUriAction fails to send querystrings with encoded characters
Summary: IOSPlatformServices.OpenUriAction fails to send querystrings with encoded cha...
Alias: None
Product: Forms
Classification: Xamarin
Component: iOS ()
Version: 2.4.0
Hardware: PC Windows
: High critical
Target Milestone: 2.4.0
Assignee: Rui Marinho
Depends on:
Reported: 2017-08-29 20:39 UTC by brett.lefebvre
Modified: 2017-09-01 15:31 UTC (History)
5 users (show)

Tags: ac ios OpenUri uri parameters, fr
Is this bug a regression?: Yes
Last known good build:

repro project (55.87 KB, application/zip)
2017-08-29 22:51 UTC, Jimmy [MSFT]

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Description brett.lefebvre 2017-08-29 20:39:59 UTC
In IOSPlatformServices.OpenUriAction Uri.ToString is being called which returns a very strange usually incorrect human readable url which then NSUrl.FromString cannot correctly parse and returns null.

You can try to open "http://test.com/?data=%7B%22Customer%22%3A%7B%22FirstName%22%3Anull%2C%22LastName%22%3Anull%2C%22Email%22%3Anull%7D%2C%22Description%22%3Anull%7D" which is url encoded json. The link will open but the entire querystring will be gone.

This PR broke it: https://github.com/xamarin/Xamarin.Forms/pull/734
Comment 1 Jimmy [MSFT] 2017-08-29 22:51:07 UTC
Created attachment 24463 [details]
repro project

### Overview
The parameters in a URI are being stripped out when using Device.OpenUri() on iOS.

### Affected Platforms

### Steps to Reproduce
1. Run the attached repro project
2. Click on "With encoded Params"

### Expected Results
The web browser will open to the Bing search results page

### Actual Results
The web browser opens the Bing homepage because the search parameters were removed

### Version Test
2.4.0-pre2  BAD   GOOD
Comment 2 Philipp Sumi 2017-08-30 07:25:49 UTC
Also try custom protocols - I recall getting weirdly formatted URIs using Uber's scheme, where an additional slash was inserted right after the protocal after parsing (so I ended up with uber:///?xxx). Here's a URI:

Comment 4 Rui Marinho 2017-09-01 15:31:44 UTC
Should be fixed on 2.4.0-pre3