Aiortc

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DTLS
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* Display exception if data handler fails.

Examples
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* `server` and `webcam` : add playsinline attribute for iOS compatibility.
* `webcam` : make it possible to play media from a file.

Miscellaneous
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* Use aioice >= 0.6.15 to not fail on mDNS candidates.
* Use pyee version 6.x.

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DTLS
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* Call SSL_CTX_set_ecdh_auto for OpenSSL 1.0.2.

Media
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* Correctly route REMB packets to the :class:`RTCRtpSender`.

Examples
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* :class:`~aiortc.contrib.media.MediaPlayer` : release resources (e.g. webcam) when the player stops.
* :class:`~aiortc.contrib.signaling.ApprtcSignaling` : make AppRTC signaling available for more examples.
* `datachannel-cli` : make uvloop optional.
* `videostream-cli` : animate the flag with a wave effect.
* `webcam` : explicitly set frame rate to 30 fps for webcams.

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Data channels
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* Support out-of-band negotiation and custom channel id.

Documentation
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* Fix documentation build by installing `crc32c` instead of `crcmod`.

Examples
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* :class:`~aiortc.contrib.media.MediaPlayer` : skip frames with no presentation timestamp (pts).

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Data channels
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* Do not raise congestion window when it is not fully utilized.
* Fix Highest TSN Newly Acknowledged logic for striking lost chunks.
* Do not limit congestion window to 120kB, limit burst size instead.

Media
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* Skip RTX packets with an empty payload.

Examples
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* `apprtc` : make the initiator send messages using an HTTP POST instead of WebSocket.
* `janus` : new example to connect to the Janus WebRTC server.
* `server` : add cartoon effect to video transforms.

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DTLS
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* Do not use DTLSv1_get_timeout after DTLS handshake completes.

Data channels
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* Add setter for :attr:`RTCDataChannel.bufferedAmountLowThreshold`.
* Use `crc32c` package instead of `crcmod`, it provides better performance.
* Improve parsing and serialization code performance.
* Disable logging code if it is not used to improve performance.

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DTLS
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* Do not bomb if SRTP is received before DTLS handshake completes.

Data channels
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* Implement unordered delivery, so that the `ordered` option is honoured.
* Implement partial reliability, so that the `maxRetransmits` and `maxPacketLifeTime` options are honoured.

Media
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* Put all tracks in the same stream for now, fixes breakage introduced in 0.9.14.
* Use case-insensitive comparison for codec names.
* Use a=msid attribute in SDP instead of SSRC-level attributes.

Examples
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* `server` : make it possible to select unreliable mode for data channels.
* `server` : print the round-trip time for data channel messages.