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Allow receive-only use of datagram transport for data channels.

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Adds a field trial and configuration parameter to control whether
datagram transport may be used for data channels in a receive-only
manner.  By default, if use_datagram_transport_for_data_channels is
enabled, PeerConnection will create a datagram transport and offer its
use for outgoing calls as well as accept incoming offers with compatible
datagram transport parameters.

With this change, a receive_only mode is added for datagram transport
data channels.  When receive_only is set, the PeerConnection will not
create or offer datagram transports for outgoing calls, but will accept
incoming calls that offer compatible datagram transport parameters.

Bug: webrtc:9719
Change-Id: I35667bcc408ea4bbc61155898e6d2472dd262711
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/154463
Reviewed-by: Seth Hampson <shampson@webrtc.org>
Commit-Queue: Bjorn Mellem <mellem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29327}
This commit is contained in:
Bjorn A Mellem
2019-09-26 11:02:11 -07:00
committed by Commit Bot
parent 63173d5bef
commit 7da4e563b7
6 changed files with 170 additions and 9 deletions
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8
api/peer_connection_interface.h
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@ -632,6 +632,14 @@ class RTC_EXPORT PeerConnectionInterface : public rtc::RefCountInterface {
// of SCTP-DTLS.
absl::optional<bool> use_datagram_transport_for_data_channels;
// If true, this PeerConnection will only use datagram transport for data
// channels when receiving an incoming offer that includes datagram
// transport parameters. It will not request use of a datagram transport
// when it creates the initial, outgoing offer.
// This setting only applies when |use_datagram_transport_for_data_channels|
// is true.
absl::optional<bool> use_datagram_transport_for_data_channels_receive_only;
// Defines advanced optional cryptographic settings related to SRTP and
// frame encryption for native WebRTC. Setting this will overwrite any
// settings set in PeerConnectionFactory (which is deprecated).