5 Commits (32b3e36c683da0cea37a01c006037ff31f8a2b1d)

Author	SHA1	Message	Date
Mark Michelson	32b3e36c68	SDP: Ensure SDPs "merge" properly. ... The gist of this work ensures that when a remote SDP is received, it is merged properly with the local capabilities. The remote SDP is converted into a stream topology. That topology is then merged with the current local topology on the SDP state. That new merged topology is then used to create an SDP. Finally, adjustments are made to RTP instances based on knowledge gained from the remote SDP. There are also a battery of tests in this commit that ensure that some basic SDP merges work as expected. While this may not sound like a big change, it has the property that it caused lots of ancillary changes. * The remote SDP is no longer stored on the SDP state. Biggest reason: there's no need for it. The remote SDP is used at the time it is being set and nowhere else. * Some new SDP APIs were added in order to find attributes and convert generic SDP attributes into rtpmap structures. * Writing tests made me realize that retrieving a value from an SDP options structure, the SDP options needs to be made const. * The SDP state machine was essentially gutted by a previous commit. Initially, I attempted to reinstate it, but I found that as it had been defined, it was not all that useful. What was more useful was knowing the role we play in SDP negotiation, so the SDP state machine has been transformed into an indicator of role. * Rather than storing separate local and joint stream state capabilities, it makes more sense to keep track of current stream state and update it as things change. Change-Id: I5938c2be3c6f0a003aa88a39a59e0880f8b2df3d	9 years ago
Joshua Colp	f3290d6b66	sdp: Add support for setting connection address and clean up state. ... This change cleans up state management for media streams by moving RTP instances into their own session structure and adding additional details that are not relevant to the core (such as connection address). These can live either in the local capabilities or joint capabilities. The ability to set explicit connection address information for the purposes of direct media and NAT has also been added at the global and stream specific level. ASTERISK-26900 Change-Id: If7e5307239a9534420732de11c451a2705b6b681	9 years ago
George Joseph	8470c2bdea	RFC sdp: Initial SDP creation ... * Added additional fields to ast_sdp_options. * Re-organized ast_sdp. * Updated field names to correspond to RFC4566 terminology. * Created allocs/frees for SDP children. * Created getters/setters for SDP children where appropriate. * Added ast_sdp_create_from_state. * Refactored res_sdp_translator_pjmedia for changes. Change-Id: Iefbd877af7f5a4d3c74deead1bff8802661b0d48	9 years ago
Mark Michelson	9c55a71798	SDP: Add initial SDP state machine. ... This introduces and documents the various states in the state machine. This also introduces API functions that induce state changes, and places TODO comments telling what needs to be done in addition to what is already there. Those TODOs will be replaced with real code in upcoming changes. Change-Id: I871c0eb480b4c84d83e91ac5628e7a673e8b89ed	9 years ago
Mark Michelson	a738772edd	Add initial SDP state code. ... This establishes the basic allocation/destruction of an SDP state object, plus some of the simpler getter methods involved. Subsequent tasks will deal with adding a state machine, creating SDPs from capabilities and options, and merging SDPs into a joint SDP. Change-Id: Ie3757ce186f04b65e9d1883f5aace53f24e53709	9 years ago