380483 - Sunbird on MacOS X does not use IPv6 when given a server name

Status: RESOLVED INCOMPLETE

(Calendar :: Provider: ICS/WebDAV, defect)

Description

[Andrew Jones]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.10) Gecko/20070313 Fedora/1.5.0.10-5.fc6 Firefox/1.5.0.10
Build Identifier: Sunbird 0.3.1 for MacOS X as released on the Web site

When subscribing to calendars with Sunbird 0.3.1 on MacOS X 10.4, one has to type in a server name in the URL. Sunbird on other platforms will use the IPv6 address for the name first, followed by an IPv4 address. Other MacOS X applications use IPv6 when given the opportunity. Sunbird does not. In fact, even if there is no IPv4 address, Sunbird will not even attempt to look up an IPv6 address. I tried adding something like calendar.ipv6.mydomain.com with only an AAAA record in DNS, but Sunbird looked for A records, and, not finding any, gave up immediately.

What DOES work is using the IPv6 address in the url (i.e. http://[fe40::...]/).

Reproducible: Always

Steps to Reproduce:
1. Try to import an ICS calendar from a WebDAV server that only has an IPv6 address.
Actual Results:  
Server cannot be found.

Expected Results:  
Server should be found.

Tried looking for AAAA records.

Comment 1

[Stefan Sitter [:ssitter]]

Does the problem also exists using a Sunbird 0.5pre nightly build?

Does the problem also exists when accessing the URL with Firefox trunk build?

Sunbird doesn't handle networking itself. This is done by the underlying Mozilla Toolkit. There seem to be similar issues with Firefox on Mac OS X, e.g. Bug 376226 and Bug 377282. 

Please also try the fix suggested in Bug 377282 Comment #4 ff. (setting "network.dns.disableIPv6" to false).

Comment 2

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

Andrew, could you please test with the latest trunk / 0.8pre nightly builds and see if this issue still occurs?

Comment 3

[Philipp Kewisch [:Fallen][☁️📆]]

No response from reporter, closing INCOMPLETE. Please reopen if you can reproduce or answer any unanswered questions