IPv6 AAAA record misunderstood

nextcloud / android

📱 Nextcloud Android app

https://play.google.com/store/apps/details?id=com.nextcloud.client

GNU General Public License v2.0

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IPv6 AAAA record misunderstood #5746

Closed roncamma closed 4 years ago

roncamma commented 4 years ago

Steps to reproduce

domain name (exemple.com) with only AAAA record
try to connect with the app using https://exemple.com

Expected behaviour

The app should be connect to the server ising ipv6 address provided by the DNS

Actual behaviour

The app can't find the server error : Unable to fiind server

Environment data

Android version: 10

Device model: OnePlus 6

Stock or customized system: Stock OxygenOS 10.3.1

Nextcloud app version: 3.10.1

Nextcloud server version: 17.0.3

Test realized :

No issues with a web browser.
When I use directly the IPv6 addresse with the right format : https://[xxx.xx.x...] it works 👍
If I put the address in incorrect format : https://xxx.xxxx... same error ! I believe that the app doesn't use the right format to connect to the host. My android device resolve well the AAAA record. It works using Firefox on the same device.

Thanks.

tobiasKaminsky commented 4 years ago

Can you create us a test account and send the credentials to tobias at nextcloud dot com with a reference to this issue?

roncamma commented 4 years ago

Hello @tobiasKaminsky Email sent. Thank you !:)

tobiasKaminsky commented 4 years ago

Hm. No mail received?

roncamma commented 4 years ago

Is it okay now ? Thanks.

svennissel commented 4 years ago

Same Problem with Samsung Galaxy S10e (Android 10). My nextcloud has an a and AAAA Record but in my Network the clients use IPv6 primary. My Nextcloud Version is 18.0.3. I run nextcloud in a docker container and behind a nginx https proxy. Linux/Windows App and Browser works fine

tobiasKaminsky commented 4 years ago

Is it okay now ?

Thanks, I received the mail and will have a look soon.

svennissel commented 4 years ago

In a tcpdump on the server i see no incomming traffic from the smartphone with the nextcloud app (connected over LTE). My domain is subdomain.domain.de and my dns record is ipv6 ip in a short notation: *.domain.de. 86400 IN AAAA xxxx:xxx:xxx:xxxx::1

tobiasKaminsky commented 4 years ago

sorry for coming back so late. I tested with @roncamma credentials via mail:

on my laptop with ipv4 only: no connection at all
with my Android 10 lineageos, with ipv4/ipv6: connection, browsing and image upload worked fine

I used the address to connect, even without https prefix, not the ip: next.xxx.tld

roncamma commented 4 years ago

Thanks Tobias for your message. It works also for me now. Any app update ? Or maybe the app use its own dns server ? Maybe the DNS record was not yet propagated to the dns server that app use when I post this issue.

tobiasKaminsky commented 4 years ago

Last update was ~2 weeks ago and we did not changed anthing in this regard.

tobiasKaminsky commented 4 years ago

@svennissel in your case I unfortunately do not have an idea :/

svennissel commented 4 years ago

In between a had turned on the firewall. So i have seen no packeges in TCP Dump. Know I see TCP errors "Port unreachable (Destination Port: 41740)". But this will be a error with my nginx Proxy. Sorry for my wrong comments. Thank you for your help.