Summary: | ASTERISK-07976: Asterisk doesn't like CNAMEs or DNS servers that are down | ||
Reporter: | The Elite Geek (the_elite_geek) | Labels: | |
Date Opened: | 2006-10-21 19:16:40 | Date Closed: | 2006-11-16 13:01:23.000-0600 |
Priority: | Blocker | Regression? | No |
Status: | Closed/Complete | Components: | Core/General |
Versions: | Frequency of Occurrence | ||
Related Issues: | |||
Environment: | Attachments: | ||
Description: | Asterisk 1.2.12.1 doesn't like CNAME records, for example, have two providers (or more), listed and then execute a "sip show peers". When one provider uses a CNAME record (to a different server), Asterisk simply copies the stats of the previous provider, as per this: WDP/61990150xxx 202.60.75.46 5060 OK (27 ms) VoXaLot/465xxxxx 202.60.75.46 N 5060 OK (27 ms) When a providers DNS isn't reachable, asterisk reports all providers as UNREACHABLE (Down), even when queried single. Other behaviours caused are ATAs dropping out randomly, calls not working, and asterisk basically unusable. What I suggest as a resolution, though not sure how easy it would be to implement is better error handling, checking that it is an IP, much like PHP's gethostbyname() function. I have given this "block" status, as it does affect all abilities of asterisk when a remote DNS issue occurs. | ||
Comments: | By: Olle Johansson (oej) 2006-10-29 14:07:16.000-0600 It's a known problem that our DNS handling is very buggy and needs to be rewritten. You are recommended to use a local DNS server that is always running and will handle these kind of situations, until we develop a proper DNS implementation in Asterisk. By: Joshua C. Colp (jcolp) 2006-11-16 13:01:22.000-0600 DNS in Asterisk currently is blocking based, this leads to all sorts of issues when the DNS is down. This is something we will hopefully be making an effort to solve in the next development cycle but at this point in time there's nothing we can do. I would suggest following oej's suggestion. Peace! |