Struct RemoteSigner 

pub struct RemoteSigner { /* private fields */ }

Signs by delegating to an arch-cosigner proxy over POST /v1/sign.

Every response is verified before it is returned: the response’s arch_account_pubkey must equal the configured pubkey, and the signature must BIP322-verify for the exact submitted message under that key (DEFAULT-then-ALL sighash, the validator’s order). A failed check is SignError::Verification.

sign_message retries Proxy errors with status 502 and transport failures (Proxy with status None) up to the configured retry count, with exponential backoff. Every other error, including a 503 from an unavailable proxy or infrastructure in front of it, returns on first occurrence.

Implementations

impl RemoteSigner

pub fn new(url: &str, token: &str, role: &str, pubkey: Pubkey) -> Self

Creates a signer for role at the proxy base url, verifying every response against pubkey.

Defaults: network Bitcoin, 35 s request timeout, 2 retries, intent “unlabeled”, 250 ms retry backoff.

pub fn with_network(self, network: Network) -> Self

Returns this signer with network used for response verification.

pub fn with_intent(self, intent: &str) -> Self

Returns this signer with the intent label recorded in the proxy’s audit log.

pub fn with_retries(self, retries: u32) -> Self

Returns this signer with the retry budget for retryable errors.

pub fn with_timeout(self, timeout: Duration) -> Self

Returns this signer with the per-request HTTP timeout.

pub fn pubkey(&self) -> Pubkey

Returns the Arch account key responses are verified against.

pub fn network(&self) -> Network

Returns the network used for response verification.

pub fn base_url(&self) -> &str

Returns the proxy base URL with any trailing / trimmed.

Trait Implementations

impl ArchSignerT for RemoteSigner

fn pubkey(&self) -> Pubkey

Returns the Arch account key this signer signs for.

fn sign_message<'life0, 'life1, 'async_trait>( &'life0 self, message: &'life1 ArchMessage, ) -> Pin<Box<dyn Future<Output = Result<SignResponse, SignError>> + Send + 'async_trait>>

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

Signs the message’s BIP322 digest.

fn sign_messages<'life0, 'life1, 'async_trait>( &'life0 self, messages: &'life1 [ArchMessage], ) -> Pin<Box<dyn Future<Output = Result<Vec<Result<SignResponse, SignError>>, SignError>> + Send + 'async_trait>>

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

Signs every message in messages, returning one result per input in input order.

fn sign_transaction<'life0, 'async_trait>( &'life0 self, message: ArchMessage, ) -> Pin<Box<dyn Future<Output = Result<RuntimeTransaction, SignError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Signs a transaction whose only required signer is this signer.

fn sign_transaction_mixed<'life0, 'life1, 'async_trait>( &'life0 self, message: ArchMessage, local_cosigners: &'life1 [UntweakedKeypair], ) -> Pin<Box<dyn Future<Output = Result<RuntimeTransaction, SignError>> + Send + 'async_trait>>

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

Signs a transaction with this signer plus local cosigner keypairs.

impl Clone for RemoteSigner

fn clone(&self) -> RemoteSigner

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RemoteSigner

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

Formats the value using the given formatter.