Can't create account with IPv6 address

[Sheldor]

Hello there,

I’m using DAVdroid 1.2 and tried to create a new DAVdroid account with a IPv6 address.

After entering the IP I got the following error message:
Expected a closing square bracket for IPv6 address at index 0: [2a02

The address is specified as
https://[2a02:xxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx]

CatLog gave Warnings at
at.bitfire.davdroid.ui.setup.LoginCredentialsFragment.validateLoginData(LoginCredentialsFragment.java:138)
at.bitfire.davdroid.ui.setup.LoginCredentialsFragment $1.onClick(LoginCredentialsFragment.java:75)

I’m using Android Version 6.0.1.
I hope you can help me.

[rfc2822]

And you’re sure that the closing square bracket is correctly entered? Did you try with slash at the end?

[Sheldor]

@rfc2822 Yes, no matter what I type everytime the closing square bracket is expected before the first colon.
It seems as if the first colon is recognized as the end of the host.

I also tried it with a slash at the end.

[rfc2822]

Maybe problems with the IDN conversion …

[rfc2822]

Turns out that Android’s Uri class doesn’t understand IPv6 literals. It returns Error parsing port string. java.lang.NumberFormatException: Invalid int: "2::3]" when calling it for http://[2a02:2::3]/test because it interprets everything before the first : as host name, and everything else as port number (quality crafted by Google).

Seems like we have to wrap the the check into a real Java URI.

[rfc2822]

IPv6 literals should work with DAVx⁵ 2.4. Can you confirm that?