Module rel 

Reliable provisional responses in a live call (RFC 3262).

The state machine and the header types are in sipx_sip::rel, which has no clock. This is the half that does: sending PRACK when a numbered provisional arrives, and — on the answering side — retransmitting a 180 Ringing until the caller says it got there.

Structs

Ringing

An invitation that has been rung but not yet answered.

Functions

prack_body

The body a PRACK must carry, if any (RFC 3262 §5).

reliable_sequence

Whether a provisional response was sent reliably, and its sequence number.

ring

Ring: send a provisional response, reliably if RFC 3262 says to.

ring_early

Ring, and answer the INVITE’s offer in the provisional (RFC 3262 §5 + RFC 3311 §4).

ring_early_with

ring_early, from a chosen codec set rather than the default one (M-30).

ring_early_with_policy

ring_early, using one coherent codec and ICE policy.

ring_early_with_policy_at

ring_early_with_policy with independent advertised and bound media addresses.

ring_offer_early

Ring with an SDP offer in a reliable provisional response.

ring_offer_early_with_policy

ring_offer_early, using one coherent codec, security and ICE policy.

ring_offer_early_with_policy_at

ring_offer_early_with_policy with independent advertised and bound media addresses.

send_prack

Send the PRACK acknowledging a reliable provisional (RFC 3262 §4).