Struct LivenessPing 

pub struct LivenessPing {
    pub liveness_ping: u64,
    pub silence_window_ms: u64,
}

Transport-level liveness ping, pushed by the server down the SAME stream a dispatch travels. It is answered by the worker SDK RUNTIME, never by action code: the fact it establishes is “the server can reach this worker’s dispatch path”, and only a frame that rides that exact path can establish it. An open stream sender is not an answering worker — the server can hold a perfectly healthy-looking channel to a wedged process indefinitely, which is the failure class this ping exists to detect.

Distinct from Heartbeat: Heartbeat travels worker-to-server and proves the worker PROCESS is alive; this pair travels server-to-worker-and-back and proves the server-to-worker LEG carries. Those are different facts, and only the second is a dispatch precondition.

Fields

liveness_ping: u64

Monotonic ping sequence within this server’s probe, echoed verbatim on the answer so a stale or reordered answer cannot be mistaken for a fresh one.

silence_window_ms: u64

How long the worker may hear NOTHING on this stream before it should treat the link as dead — this server’s operator-configured heartbeat window, carried on the wire so the worker never holds a second copy of it.

Trait Implementations

impl Clone for LivenessPing

fn clone(&self) -> LivenessPing

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LivenessPing

impl Debug for LivenessPing

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

Formats the value using the given formatter.

impl Default for LivenessPing

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for LivenessPing

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for LivenessPing

impl Hash for LivenessPing

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for LivenessPing

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for LivenessPing

fn eq(&self, other: &LivenessPing) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for LivenessPing

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for LivenessPing