Hello,
yesterday I committed to git new feature that allow write access to
branch attributes. It is about branches kept in core before TM takes
over and creates the branches for transaction. These branches are filled
when you do location lookup, alias db lookup or append_branch in route
block.
You can update the attributes:
- r-uri
- outbound proxy address (dst uri)
- path
- q value
- local socket to be used for sending
- branch flags
More at:
http://sip-router.org/wiki/cookbooks/pseudo-variables/devel#branch_attributes
The access can be done with index, 0 is the first. Negative value of
index starts counting from the last, therefore index -1 is the last
branch. If the index is missing, then first branch is used.
Adding a new branch can be done with km_append_branch(...) of kex module
or append_branch() functions. Dropping a branch is by assigning $null to
uri attribute of branch.
Among benefits:
- drop invalid branches before creating the transaction
- you can lookup the aor from branches in location table, avoiding a
loopback of a branch (e.g., for alias db case)
Cheers,
Daniel
--
Daniel-Constantin Mierla
* http://www.asipto.com/
* http://twitter.com/miconda
* http://www.linkedin.com/in/danielconstantinmierla
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