[sr-dev] [tracker] Comment added: Received replies should get higher preference than locally generated ones

[sip-router]

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The following task has a new comment added:

FS#54 - Received replies should get higher preference than locally generated ones
User who did this - Andrei Pelinescu-Onciul (andrei)

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Alex,

DNS failover is automatically attempted if a 503 is received or on timeout (just making sure that you don't try to do in script something that is already automatically handled). I guess your example is valid if you don't want to do DNS failover on the local proxy, but on the upstream one.

Regarding the invented response: I would always prefer a timeout over some 500 a downstream proxy might have sent (the 408 says at least that there might be a working phone, but the user didn't pick it up). For 4xx responses is not so clear, it's debatable if one should prefer
 a 408 over a 480 or even a 486.
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More information can be found at the following URL:
http://sip-router.org/tracker/index.php?do=details&task_id=54#comment69

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