Enum TuEvent 

pub enum TuEvent {
    Request(Box<Request>),
    Response(Box<Response>),
    Ack(Box<Request>),
    Timeout,
    TransportError,
}

What the transaction has to tell the transaction user.

Variants

Request(Box<Request>)

A request arrived that the TU has not seen before.

A retransmission never produces this: the transaction answers those itself. Without that, a UDP peer that misses one response makes the application process the same REGISTER seven times.

Response(Box<Response>)

A response arrived.

Under RFC 6026 a 2xx to an INVITE can arrive more than once — a forking proxy produces exactly that — and each one is delivered. Two 200s for one INVITE is a fork, not a bug.

Ack(Box<Request>)

An ACK for a 2xx response, which is a separate transaction and therefore the TU’s business (RFC 3261 §13.2.2.4, RFC 6026).

Timeout

No answer within 64·T1.

TransportError

The transport could not deliver.

Trait Implementations

impl Clone for TuEvent

fn clone(&self) -> TuEvent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TuEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.