apple
Twext attempts to bind to IPv6 address and fails
jroweboy@… originally submitted this as ticket:812
- Owner: @glyph
Note: this is a bug that was previously discussed on the calendar server users list at https://lists.macosforge.org/pipermail/calendarserver-users/2013-July/002266.html
When installing Calendar server on a platform where the DNS returns an IPv6 address, but is unable to bind on IPv6 address the Calendar Server fails to start and produces the following stack trace
2013-07-09 16:41:26-0600 [-] [caldav-0] [HTTPChannel,1,::ffff:192.168.105.109] [twext.web2.server#info] GET / HTTP/1.1
2013-07-09 16:41:26-0600 [-] [caldav-0] [HTTPChannel,1,::ffff:192.168.105.109] Unhandled error in Deferred:
2013-07-09 16:41:26-0600 [-] [caldav-0] [HTTPChannel,1,::ffff:192.168.105.109] Unhandled Error
2013-07-09 16:41:26-0600 [-] [caldav-0] Traceback (most recent call last):
2013-07-09 16:41:26-0600 [-] [caldav-0] Failure: twisted.internet.error.ConnectError: An error occurred while connecting: 13: Permission denied.
2013-07-09 16:41:26-0600 [-] [caldav-0]
2013-07-09 16:41:26-0600 [-] [caldav-0] [HTTPChannel,1,::ffff:192.168.105.109] [twext.web2.server#info] Exception rendering:
2013-07-09 16:41:26-0600 [-] [caldav-0] [HTTPChannel,1,::ffff:192.168.105.109] [twext.web2.server#error] [Failure instance: Traceback: <class 'socket.error'>: Address family not supported by protocol
2013-07-09 16:41:26-0600 [-] [caldav-0] /usr/lib64/python2.6/site-packages/twext/web2/channel/http.py:819:lineReceived
2013-07-09 16:41:26-0600 [-] [caldav-0] /usr/lib64/python2.6/site-packages/twext/web2/channel/http.py:1155:lineReceived
2013-07-09 16:41:26-0600 [-] [caldav-0] /usr/lib64/python2.6/site-packages/twext/web2/channel/http.py:259:lineReceived
2013-07-09 16:41:26-0600 [-] [caldav-0] /usr/lib64/python2.6/site-packages/twext/web2/channel/http.py:537:processRequest
2013-07-09 16:41:26-0600 [-] [caldav-0] --- <exception caught here> ---
2013-07-09 16:41:26-0600 [-] [caldav-0] /usr/lib64/python2.6/site-packages/twext/web2/server.py:366:process
2013-07-09 16:41:26-0600 [-] [caldav-0] /usr/lib64/python2.6/site-packages/twext/web2/server.py:328:_fixupURLParts
2013-07-09 16:41:26-0600 [-] [caldav-0] /usr/lib64/python2.6/site-packages/twext/web2/channel/http.py:644:getHostInfo
2013-07-09 16:41:26-0600 [-] [caldav-0] /usr/lib64/python2.6/site-packages/twext/web2/channel/http.py:137:_cachedGetHostByAddr
2013-07-09 16:41:26-0600 [-] [caldav-0] ]
What is expected: Maybe if the server fails to connect on a IPv6 address, it will attempt to determine and fall back to using a IPv4 address. Another solution may be to print a message saying that it was unable to bind to a IPv6 address and inform the user to explicitly set the IPv4 address under the BindAddress setting in caldavd.plist
Workaround: Setting an explicit IPv4 address in the BindAddress portion of the caldavd.plist solved this issue.
jroweboy@… originally submitted this as comment:1:ticket:812
Oh, my formatting could use some help, but I see no way for me to edit the ticket.
@glyph originally submitted this as comment:2:ticket:812
- Description modified
Formatting fixed. Thanks for your bug report.
@wsanchez originally submitted this as comment:3:ticket:812
- Owner changed from @wsanchez to @glyph
- Priority changed from 1: Blocker to 2: Expected
- Milestone set to CalendarServer-5.x
@wsanchez originally submitted this as comment:4:ticket:812
- Milestone changed from CalendarServer-5.x to CalendarServer-6.x
@wsanchez originally submitted this as comment:7:ticket:812
- Milestone changed from CalendarServer-6.x to Sooner
@wsanchez originally submitted this as comment:8:ticket:812
- Component changed from Calendar Server to twext