Release 1.7.0 of the Amazon Kinesis Video WebRTC C SDK

Release tagged at: 22c9e3d

Whats new:

• Updated libwebsockets library to 4.2.2
• make clean command added
• Full jitter (range of jitter equal to base wait time) on exponential backoff of repeated signaling API calls
• Full jitter & exponental backoff on non-200 results at the state machine level
• Clock skew adaptations
  System time is compared to server time (with timezone corrections). If a skew is detected, the delta will be saved and the API retried.
  Skew per API service is tracked.
• Better caching of IoT credentials. Resetting of the state machine for non-auth reasons will no longer require re-creating the signaling client.

Sample improvements:

• Showcase data channel support in WebRTC Viewer sample.
• Sample no longer destroys and recreates signaling client to reset state machine.

Bug Fixes

• issues resolved: #1174 #1225 #1249
• FD leak patched in LWS #1263
• fix pare_status.py script #1268
• Resolve LWS interface layer not appropriately reporting failures in some cases #1328
• DCEP protocol issue fixed for non-null values #1228

Producer C version:

• v1.2.X (unreleased at this time) - c7fce9e06021452ff3c42dc70c8360606b22ad53

Release 1.6.0 of the Amazon Kinesis Video WebRTC C SDK

Release tagged at: 07deb17

Whats new:

• Added Transport Wide Congestion Control (TWCC) support
• Updated libwebsockets library to 4.2.1
• Updated libsrtp and libusrsctp library to include MBedTLS support changes
• Improved jitter buffer design

Sample improvements:

• Introduced certificate pre-gen in sample that would speed up processing on low-footprint devices
• Included network interface filtering callback usage in samples
• Added IoT credential provider usage pattern
• Showcase usage pattern to set transceiver direction in samples

Build improvements:

• Fixed Mac OS newer versions build issue with libwebsockets

Producer C version:

• v1.2.0 - 99c1a8cd8cec88f99c9c4ce3944b53ae341d1491

Release 1.5.0 of the Amazon Kinesis Video WebRTC C SDK

Release tagged at:

f3a34c2

Whats’s new:

• Transport wide congestion control (TWCC) parsing
• Updates to ICE server configuration refresh functionality to simplify the logic
• Fixes for timing issues with SRFLX candidate pairing (improves P2P/TURN connection ratio)
• ICE server configuration retrieval from the Offer (optional)
• Generating pseudo-random SN for DTLS self-signed certificates to allow multiple viewers hosted on FireFox page
• Ignoring unspecified local IP addresses
• Parsing ICE candidate priority and its type from the SDP
• Multiple stability and edge case fixes
• Data race fixes in socket connection listener teardown
• Enabling profiler tools
• Build and TravisCI integration imrprovements

Sample improvements:

• Improved startup times in the samples
• Failing on existing session with the same ClientID
• Reported bug fixes

Build improvements:

• Applying srtp library patches without which gcc 10 builds fail
• Minor CMake and Travis CI improvements
• Refactoring scripts into a separate directory

Producer C Changes: (d1095356712729d0489e56d1d0e27f5ce0a29fad)

• Using release v1.1.0
• Credential provider fixes and exposing targeted status codes on failures
• Build and Travis CI run improvements, removing sub-modules
• Added startup latency measure in the samples
• MbedTLS support in common library
• Continuous retry callbacks retry recovery on errors raised also from common library
• Various stability and test fixes
• Doxygen support
• Clang format and enforcement
• Improved test coverage

Documentation:
Information about the WebRTC public APIs can be found here:
https://awslabs.github.io/amazon-kinesis-video-streams-webrtc-sdk-c/

Release 1.4.0 of WebRTC C SDK

Release tagged at:

8a64e7f

Whats’s new:

• More metrics support
• Stabilization fixes in samples and the SDK
• Call diagrams added to Doxygen generated documentation
• Dynamic footprint reduction

Sample improvements:

• Logging selected ICE candidates
• Frame timestamp backwards drift issue fix
• Log level adjustment to reduce spew, more logging on errors
• Data race fixes on session teardown
• Serializing message handling in the samples to avoid race conditions
• Startup latency from offer to first frame measurements
• Dynamic footprint reduction optimization
• Reported bug fixes, including race conditions, 32 bit compatibility, etc..

Build improvements:

• Optional samples build flag
• Optional flag to disable data channels
• WebSockets and OpenSSL depndencies build flags fixes for embedded platforms.
• Removing the ldexp dependency
• Doxygen integration, callgraph generation
• Additional CI jobs to validate samples, enforce formatting, enable compiler warnings in tests, include mbedTls runs.
• IoT credentials provider linker fixes

Improvements:

• Metrics and stats support for ICE Candidate Pair, ICE Candidate, Data Channel, Inbound RTP Stats
• Additional SDP packet type support: PLI,
• Fix SDP handling with Trickle ICE selection
• Fix RTP timestamp macro causing incorrect timestamp mapping
• Fix race conditions in signaling message handling and teardown code, handling reentrancy with libWebSockets
• Transceiver direction support fixes
• usrsctp library startup and teardown fixes
• Support for Windows for the socket and error handling APIs
• Reducing static and dynamic footprint size
• Reported bug fixes

Producer C Changes: (15f124e5a5561679cf001bb36c2c758073740681)

• TimesQueue shutdown API blocking on the in-progress callbacks.

Documentation:
Information about the WebRTC public APIs can be found here:
https://awslabs.github.io/amazon-kinesis-video-streams-webrtc-sdk-c/

Release 1.3.0 of WebRTC C SDK

Release tagged at:

0550dba

Whats’s new:

• ICE server stats added (API: rtcPeerConnectionGetMetrics())
• RTP outbound and remote inbound stats added (API: rtcPeerConnectionGetMetrics())
• Signaling stats available (API: signalingClientGetMetrics())
• mbedTLS (experimental) support added. Choice between OpenSSL and mbedTLS available

Improvements:

• ICE candidate priority calculation bug fixed improving the candidate nomination process (#612)
• Improved SDP conformance with RFC to work with CRLF and LF (#587)
• Fixed interruption of sending process due to momentary network unreachable errors (#618)
• Fixed CPU spike when TURN candidates are not used by cleaning up the sockets they have opened (#649)

Producer C Changes: (e7d4868d8c336cec5fa35250212fffa19135a6ba)

• Build system improvements
• README improvements on SDK versioning, development and release
• Added non-BSD strnstr implementation
• Fixed static libcurl build failure

Documentation:
Information about the WebRTC public APIs can be found here:
https://awslabs.github.io/amazon-kinesis-video-streams-webrtc-sdk-c/

Release 1.2.0 of WebRTC C SDK

Release tagged at:

43ede51

Whats’s new:

• Support on Windows
• Fixed broken data channel message receive
• Added capability to handle more transceivers
• Allowing ICE username/password unto 256 bytes
• Added PRtcDataChannel to data channel callback arguments
• Added new data type to allow certain nullable types specified in RTC spec
• Provision to support trickle ICE based on Remote description
• File logging in samples
• PIC is built through producer C
• NAT behavior detection facility (cb00f8e)
• Added restartIce api.

Producer C Changes: (270c0b6612cc553d458e316e835471c693f518bd)

• Build system enhancement - navigation away from use of submodules
• Using only JSMN header
• Added file logging in samples
• New status codes for file credential provider

Improvements:

• Unit tested data channel send message after DTLS handshake
• Fix leak when ice restart fails

Known Issues:

• Incorrect transceiver direction breaks SDP exchange in Firefox and iOS
• Partial reliability does not work as expected. Need to add library level tests to validate
• Reduce memory allocations in sending audio/video packets

Documentation:
Information about the WebRTC public APIs can be found here:
https://awslabs.github.io/amazon-kinesis-video-streams-webrtc-sdk-c/

Release 1.1.0 of WebRTC C SDK

Platforms tested on:

• Linux
• MacOS
• x64
• ARMv5

Web Browsers tested on:

• Chrome
• Firefox

Release tagged at:
93505e7

Whats’s new:

• Bumped up openssl version to 1.1.1g
• Using v1.0.0 of C producer SDK
• Support multiple video tracks with same codec
• Support for signaling endpoint and signaling channel ARN caching into file
• Multiple TURN server support. ICE will try to allocate for all of them and use the one thats connected first.
• Disconnect signaling channel API
• Public utility to get pending local session description (peerConnectionGetLocalDescription())

Improvements:

• 2 seconds improvement in TURN candidate gathering
• User configurable option to use UDP or TCP/TLS based TURN
• Logs for candidate round trip time once connected
• Minor build system fixes

Known Issues:

• Incorrect transceiver direction breaks SDP exchange in Firefox and iOS
• Partial reliability does not work as expected. Need to add library level tests to validate
• Reduce memory allocations in sending audio/video packets

Documentation:
Information about the WebRTC public APIs can be found here:
https://awslabs.github.io/amazon-kinesis-video-streams-webrtc-sdk-c/

Release 1.0.0 of the Amazon Kinesis Video WebRTC C SDK

Platforms tested on:

• Linux
• MacOS
• x64
• ARMv5

Web Browsers tested on:

• Chrome
• Firefox

Release tagged at:

• f7c9706

Whats’s new:

• Starter samples of master, viewer and GStreamer master
• Cross compilation support
• Signaling Client
• Callbacks provided for Receiver end bandwidth estimation support for Congestion Control, FIR and PLI
• Network interface filtering callback provision to reduce time taken to gather TURN/ICE candidates
• STUN/TURN support
• IPv4 support
• IoT certificate authentication integration with signaling client
• Pre-generated certs support while creating DTLS session to help smaller embedded devices

Known Issues:

• Incorrect transceiver direction breaks SDP exchange in Firefox
• No IPv6 support

Documentation:
Information about the WebRTC public APIs can be found here:
https://awslabs.github.io/amazon-kinesis-video-streams-webrtc-sdk-c/