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ARI/PJSIP: Add the ability to redirect (transfer) a channel in a Stasis app
This patch adds a new feature to ARI to redirect a channel to another server, and fixes a few bugs in PJSIP's handling of the Transfer dialplan application/ARI redirect capability. *New Feature* A new operation has been added to the ARI channels resource, redirect. With this, a channel in a Stasis application can be redirected to another endpoint of the same underlying channel technology. *Bug fixes* In the process of writing this new feature, two bugs were fixed in the PJSIP stack: (1) The existing .transfer channel callback had the limitation that it could only transfer channels to a SIP URI, i.e., you had to pass 'PJSIP/sip:foo@my_provider.com' to the dialplan application. While this is still supported, it is somewhat unintuitive - particularly in a world full of endpoints. As such, we now also support specifying the PJSIP endpoint to transfer to. (2) res_pjsip_multihomed was, unfortunately, trying to 'help' a 302 redirect by updating its Contact header. Alas, that resulted in the forwarding destination set by the dialplan application/ARI resource/whatever being rewritten with very incorrect information. Hence, we now don't bother updating an outgoing response if it is a 302. Since this took a looong time to find, some additional debug statements have been added to those modules that update the Contact headers. Review: https://reviewboard.asterisk.org/r/4316/ ASTERISK-24015 #close Reported by: Private Name ASTERISK-24703 #close Reported by: Matt Jordan git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@431717 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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- CHANGES 19 additions, 0 deletionsCHANGES
- channels/chan_pjsip.c 20 additions, 2 deletionschannels/chan_pjsip.c
- include/asterisk/stasis_app.h 11 additions, 0 deletionsinclude/asterisk/stasis_app.h
- res/ari/resource_channels.c 58 additions, 0 deletionsres/ari/resource_channels.c
- res/ari/resource_channels.h 26 additions, 0 deletionsres/ari/resource_channels.h
- res/res_ari_channels.c 111 additions, 2 deletionsres/res_ari_channels.c
- res/res_pjsip_multihomed.c 4 additions, 1 deletionres/res_pjsip_multihomed.c
- res/res_pjsip_nat.c 3 additions, 0 deletionsres/res_pjsip_nat.c
- res/res_pjsip_transport_websocket.c 2 additions, 0 deletionsres/res_pjsip_transport_websocket.c
- res/stasis/control.c 32 additions, 0 deletionsres/stasis/control.c
- rest-api/api-docs/channels.json 48 additions, 0 deletionsrest-api/api-docs/channels.json
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