pub const ABS_SEND_TIME: &str = "http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time";Expand description
Absolute send time RTP header extension URI.
The RTP header-extension framework identify extensions by URI string,
and that URI is signaled verbatim in SDP a=extmap lines. Even though
this identifier looks like an HTTP URL, it just is a protocol name.
Current WebRTC stacks use this exact literal, so we preserve it for interoperability.
Reference: https://www.webrtc.org/experiments/rtp-hdrext/abs-send-time