Struct HttpWitness 

pub struct HttpWitness { /* private fields */ }

A remote witness reached over tlog-witness.

Implementations

impl HttpWitness

pub fn new( prefix: impl Into<String>, log: LogKey, trusted: Vec<TrustedWitness>, ) -> Result<Self, WitnessError>

Point at a witness.

prefix is the submission prefix, without /add-checkpoint.

Errors

If an HTTP client cannot be built, or if trusted is empty — a witness whose cosignature nothing can check is not a witness, and accepting one would make every quorum below it a count of HTTP status codes.

pub fn reader(&self) -> Result<WitnessReader, WitnessError>

A reader for what this witness holds, at its monitoring prefix.

The same trusted keys, so a deployment that submits and then reads back cannot end up holding one set of keys for the round trip and another for the check.

Errors

If an HTTP client cannot be built.

pub fn monitoring_at(self, prefix: impl Into<String>) -> Self

Read this witness at a different prefix from the one submissions go to.

Only needed where the deployment splits them — a monitoring prefix delegated to a CDN, which the specification explicitly allows for.

Trait Implementations

impl Clone for HttpWitness

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HttpWitness

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

Formats the value using the given formatter.

impl Witness for HttpWitness

fn cosign<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, checkpoint: &'life1 Checkpoint, old_size: u64, proof: &'life2 [Digest], ) -> Pin<Box<dyn Future<Output = Result<Cosignature, WitnessError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Cosign checkpoint, given a consistency proof from old_size.