[OpenSIPS-Users] b2b_logic bridge with no-late-sdp unable to get bentity1->to_uri

[João Coucelo]

Hi all,

I successfully run the prepaid b2b_bridge scenario from https://opensips.org/Documentation/Tutorials-B2BUA-3-2

However, I cannot use the SDP less INVITE to initiate the connection with the "callee". Hence I was trying to use the "no-late-sdp", but I get an error when the SDPless 200 OK response from the "caller" is received.

On the b2b_logic_request route I simply added two extra args: b2b_bridge("caller", "callee", "", "no-late-sdp");

The SPDless Re-INVITE 200 OK is received on process_bridge_200OK(), but it fails to get the bentity1->to_uri
      DBG:b2b_logic:process_bridge_200OK: Send invite to [] Proxy []

When initiating the bridge, I can confirm that the new client entity is added correctly with the to_uri
      DBG:b2b_logic:b2bl_entity_new: First new entity [callee] saved in context
      opensips_1                | Jul  3 13:25:55 [10] DBG:b2b_logic:b2bl_bridge: New entity, dest = [sip:+351940026774 at 172.16.254.101:5060]
      opensips_1                | Jul  3 13:25:55 [10] DBG:b2b_logic:b2bl_bridge: New entity, dest = [sip:+351940026774 at 172.16.254.101:5060]
      opensips_1                | Jul  3 13:25:55 [10] DBG:b2b_logic:b2bl_create_new_entity: new entity type [1] [0x7f74039c9308]->[]
      opensips_1                | Jul  3 13:25:55 [10] DBG:b2b_logic:bridging_start_old_ent: Send reInvite to old entity
      opensips_1                | Jul  3 13:25:55 [10] DBG:b2b_logic:b2bl_create_new_entity: new entity type [1] [0x7f74039cb620]->[]

Looking at the code, it appears to me the new_br_ent[1]->dest_uri is properly filled when preparing the bridge, and so the b2bl_create_new_entity() should be filling the to_uri and the returned entity properly stored on the tuple->bridge_entities[1]

However, when receiving the 200 OK, there the same tuple->bridge_entities[1] returns no to_uri..
      opensips_1                | Jul  3 13:25:55 [12] DBG:core:MD5StringArray: MD5 calculated: 38b99f724da7821223927ccebf7b95d6
      opensips_1                | Jul  3 13:25:55 [12] DBG:b2b_entities:generate_tag: from_tag = 38b99f724da7821223927ccebf7b95d6-0668
      opensips_1                | Jul  3 13:25:55 [12] DBG:core:parse_headers_aux: flags=ffffffffffffffff
      opensips_1                | Jul  3 13:25:55 [12] DBG:tm:t_uac: next_hop=<>
      opensips_1                | Jul  3 13:25:55 [12] ERROR:core:parse_uri: uri too short: <> (0)
      opensips_1                | Jul  3 13:25:55 [12] ERROR:tm:uri2proxy: bad_uri:
      opensips_1                | Jul  3 13:25:55 [12] ERROR:b2b_entities:_client_new: while sending request with t_request
      opensips_1                | Jul  3 13:25:55 [12] ERROR:b2b_logic:b2bl_new_client: Failed to create client id
      opensips_1                | Jul  3 13:25:55 [12] ERROR:b2b_logic:bridging_new_client: Failed to generate new client
      opensips_1                | Jul  3 13:25:55 [12] ERROR:b2b_logic:_b2b_handle_reply: Failed to process bridging 200OK for Invite

If there is an issue with the code, I cannot find it. Maybe I'm simply misusing this feature. Any thoughts?

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