Am 25.08.2011 10:14, schrieb Jason Penton: > > From some initial work and testing I can confirm that this works ONLY > when using the top Via *without* branch tags. Not sure what impact this > could have? > This is because a BYE results in a different set of branch tags from the > original set of invite branches - I am investigating why and how this > works now.
Sure. the branch tag is a transaction identifier and must be unique in space and time. Thus, BYE must have another tag. That's why I said you have to put some data into RR cookies - this is the only data which stays the same during the dialog (except tags and call-id). If you only want to know if an in-dialog request is from orig->term or from term->orig, then the is_direction function is already sufficient. If you want to detect a certain spiral leg in dialog module, IMO you have to add another matching parameter (besides tags and call-id) to dialog module which will be set as RR-cookie and retrieved from Route header for in-dialog requests. Every time the initial requests spirals through the proxy, you have to add such a cookie which of course must be different to the previous inserted cookie (therefore ftag is not sufficient anymore) - either generate a random identifier or reuse some data from the message (e.g. you could copy branch-tag to RR header as it should be unique) regards Klaus _______________________________________________ sr-dev mailing list [email protected] http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
