* Make new path for signalling v1.5 support.
To be able to support newer clients to interact with older servers, move
signalling v1.5 to new path (`/rtc1`). On the new path, `join_request`
is required and single peer connection is used.
With the existing path `/rtc`, single peer connection is still supported
if `join_request` is used.
Newer clients connecting to old server should follow
1. Try new path WebSocket
2. If that fails, try new path validate at `/rtc1/validate`.
3. If the above gets a 404 which will happen with older server, revert
back to old path and signalling 1.0.
Open to suggestions on path name.
* test on both paths
* change path from /rtc1 -> /rtc/v1
* test all rtc service path combinations
* WIP
* check using protocol version
* revert
* clean up
* sdp cid argument
* WIP
* WIP
* test
* clean up
* clean up
* fixes
* clean up
* clean up
* clean up
* conditional checks
* tests for both dual and single peer connection
* test
* test
* test
* type check
* test
* todo
* munges
* combined config
* populate mid
* limit to receive only
* clean up
* clean up
* clean up
* older test
* clean up
* alternative audio codec
* dtx
* don't need to copy
* Anunay feedback
* use the available peer connection
* publisher check
* WIP
* WIP
* WIP
* no mid
* media sections requirement
* mage generate
* WIP
* WIP
* set data channel receive size for test
* handle early media better
* WIP
* do not do ICERestart if no subscriber
* WIP
* WIP
* WIP
* WIP
* WIP
* WIP
* start up subscriber RTCP worker
* WIP
* WIP
* clean up
* clean up
* flag to indicate use of single peer connection
* remove unused interface method
* clean up
* clean up
* Jie feedback #1
* deps
* do not access subscriber in one shot mode
* more places for one shot mode
* more one shot fixes
* deps
* deps
* test
* Unlabeled (pass through) data channels.
Support data channels than can pass through raw data without any LK
protocol marshaling/unmarshaling.
* statischeck
* test
* error -> warn
* reset data message callback
* Support for participant attributes
* move metadata setters to LocalParticipant
* address feedback
* forward error
* update go mod
* update attributes first
* feat: unpublish tracks after publish permissions are revoked.
Uses protocol 7 to indicate client support, otherwise it attempts to
mute the tracks.
Also sends back permissions objects of all participants, and cleaned up
our handling of various permissions attributes.
* fix static check
This ensures client reconnect attempts would be successful for long running rooms. It also fixes inaccurate permissions that were set incorrectly when full reconnections take place.
* prestop and hasparticipants in interface
* add prestop function to existing routers
* fakerouter prestop
* update protocol version
* read lock
* redis router graceful stop
* test fix
* force stop
* protobuf updates to support new protocol
* use dedicated publish & subscribe peerconnections
* update client to work with dedicated PCs
* fix Go client negotiation, reduced length of UUID
