[OpenSIPS-Users] uac_replace_to on failure routes

[John Komara]

I have a requirement where I need to replace the To field. I am using uac_replace_to(); to do this. It works great. I am using the dispatcher module. I am using t_on_failure(); to try the next destination in the group. It hits a failure_route that then sends it to the "next_dest" route. There I am calling ds_next_dst(); to pick the next destination in the group. After the destination has been selected I called uac_replace_to(); again. This is where I run into my problem.

The To: field now has both the first and second destination in the To: field. (i.e. sip:5555555555 at 10.10.10.10sip:5555555555 at 10.10.10.11). I can see that when uac_replace_to(); is called for the second time (in the "next_dest" route) that it is trying to store the vst parameter in the dialog:

DBG:dispatcher:ds_next_dst: using [sip:10.10.10.11:5080]
DBG:dispatcher:ds_next_dst: using [sip:10.10.10.10:5060]
DBG:uac:replace_uri: uri to replace [sip:5555555555 at 10.10.9.10]
DBG:uac:replace_uri: replacement uri is [sip:5555555555 at 10.10.10.11]
DBG:dialog:new_dlg_val: inserting <vst>=<sip:5555555555 at 10.10.9.10>
DBG:uac:replace_uri: stored <vst> param in dialog
DBG:dialog:new_dlg_val: inserting <739824>=<sip:5555555555 at 10.10.10.11>

I need the To: field to be updated on each failure with the new destination. I tried calling record_route(); after each uac_replace_to(); call as well. This resulted in an additional rr added to the header with no vst field. I am not sure where to go from here. Am I approaching this the right way? Is there a better way to do this?

Link to config: http://pastebin.com/UgzgqeF8

Thanks in advance,

John
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