[asterisk-dev] [Code Review] Added ability to perform SRV lookups for AGI URIs

Brent Thomson bthomson at getjive.com
Thu Dec 31 11:15:05 CST 2009

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(Updated 2009-12-31 11:15:05.698679)

Review request for Asterisk Developers.


Here is a new patch using the approach OEJ suggested and tilghman worked on. We've added a few tweaks to polish it up, too.


With this patch, you can run the Agi() dial plan application with a URI beginning with hagi:// (for HA Agi) to indicate that the host name should be resolved as an SRV service instead of a regular host name.

Regular Agi still works the same. Hagi URIs should look like this in your dial plan:

    exten => _X.,1,Agi(hagi://example.com/foo.agi)

Asterisk will look up _agi._tcp.example.com and will try the normal fastagi routine on each host:port in the result until one accepts the connection or all results fail. 

This addresses bug 0014775.

Diffs (updated)

  /trunk/CHANGES 234369 
  /trunk/include/asterisk/srv.h 234369 
  /trunk/main/srv.c 234369 
  /trunk/res/res_agi.c 234369 

Diff: https://reviewboard.asterisk.org/r/378/diff


* Made formatting changes per eliel's comments.
* Sniffing traffic shows correct DNS lookups, load balancing, and failover.
* Resulting AGI connections work as expected.
* Running for 6 months without issue.



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