Problems opening long URL

Solar2D iOS
#1

My app shall open a rather long URL using system.openURL(). There are no problems whatsoever on Android, but on iOS it fails.

I have tried to shorten the URL, then its OK. How can I solve this? The URL in question is e.g. 

https://kart.gulesider.no/?c=59.941428,11.031561&z=14&d={%22m%22:[[59.941686,11.02169,null,0],[59.944609,11.048555,null,0]]}

It opens OK directly in Safari, but not from the app. Any help highly appreciated.

#2

Found the solution myself. An URL containing special characters like { [] } is not accepted by Safari (when parsed from Corona). These special characters must be replaced by

{ - %7B

[ - %5B

] - %5D

} - %7D

For other characters please refer to https://www.w3schools.com/tags/ref_urlencode.ASP, URL Encoding Functions.

Android  is satisfied with both formats, so no need to make separat URL’s depending on target OS.

#3

Why not use base64 for urls?