Crate sipx_rtp 

RTP and RTCP (RFC 3550).

Two things here earn their tests. The sequence number is 16 bits and wraps every twenty-odd minutes at speech packet rates, so the wrap is an ordinary event and any comparison that uses < is wrong. And the jitter buffer trades latency for order: packets arrive late, early, twice or not at all, and audio needs them evenly spaced.

Packet parsing rejects rather than guesses. A decoder that reads a malformed packet optimistically plays header bytes as audio, which is heard as a loud click.

Stability

sipx is pre-1.0, so neither word below means frozen. 1.0.0 is what freezes an API, and its predicates are in docs/roadmap.md. Until then:

• Supported — meant to be depended on. Breaking changes get a CHANGELOG.md entry saying what to do instead. New enum variants and new struct fields may still appear in a minor release, so a downstream match should carry a _ arm.
• Experimental — may change shape or be removed without a migration note. Depend on it only if you are prepared to follow it.

Supported. RTP, RTCP, the jitter buffer, quality statistics, SRTP and RFC 4733 DTMF are all reachable from a call and exercised by it.

Re-exports

pub use dtmf::Digit;

pub use dtmf::Event as DtmfEvent;

pub use dtmf::Receiver as DtmfReceiver;

pub use jitter::JitterBuffer;

pub use packet::HEADER_LEN;

pub use packet::Packet;

pub use packet::RtpError;

pub use packet::sequence_distance;

pub use packet::sequence_is_newer;

pub use quality::Quality;

pub use quality::ntp_now;

pub use quality::round_trip;

pub use rtcp::ReceiverReport;

pub use rtcp::ReportBlock;

pub use rtcp::Rtcp;

pub use rtcp::RtcpError;

pub use rtcp::Sdes;

pub use rtcp::SdesChunk;

pub use rtcp::SdesItem;

pub use rtcp::SenderReport;

pub use rtcp::StreamStats;

pub use srtp::Context as SrtpContext;

pub use srtp::SrtpError;

Modules

dtmf

DTMF as named telephone events (RFC 4733).

jitter

A jitter buffer.

packet

RTP packets (RFC 3550 §5.1).

quality

What a call actually sounded like: loss, jitter, round-trip time, and an estimate of how bad that combination was.

rtcp

RTCP sender and receiver reports (RFC 3550 §6.4).

srtp

SRTP (RFC 3711): the default transform, AES-128 counter mode with HMAC-SHA1.