Struct WireCapability 

pub struct WireCapability {
    pub spending_cap: u64,
    pub expiry: u64,
    pub owner_signature: Vec<u8>,
}

A pool owner’s spending capability, carried inside StreamRequestExt (ADR 003 §Capability delegation). signer and pool_id are not on the wire — they are derived from stream context, exactly like a Voucher’s implicit fields: signer is the request’s bound Ethereum address (ClientBinding::ethereum_address, or the registered on-chain signer when binding is absent) and pool_id is StreamRequest::pool_id.

Fields

spending_cap: u64

Maximum cumulative amount the signer may spend against the pool under this grant. A u64, matching the PaymentPool.spendingCap on-chain storage/calldata width exactly — the node zero-extends it to a uint256 word when it reconstructs the EIP-712 capability digest (just as it does Voucher::amount).

expiry: u64

Unix-seconds expiry. After it, vouchers under this capability are no longer redeemable.

owner_signature: Vec<u8>

EIP-712 owner signature over the capability (r‖s‖v, 65 bytes for an EOA owner; may be longer for an ERC-1271 contract owner, so unlike VOUCHER_SIG_LEN-pinned signatures this is only checked non-empty at the wire boundary — WireCapability::validate). The cryptographic recovery/verification happens in decdn_incentive.

Implementations

impl WireCapability

pub const fn validate(&self) -> Result<(), MessageValidationError>

Validate the wire-level owner_signature non-emptiness. Unlike ClientBinding::validate / Voucher::validate this cannot pin an exact length — an ERC-1271 contract signature may be longer than the 65-byte EOA form — so this is a floor, not a full shape check.

Errors

MessageValidationError::EmptyCapabilitySignature if owner_signature is empty.

Trait Implementations

impl Clone for WireCapability

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 WireCapability

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WireCapability

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WireCapability

impl PartialEq for WireCapability

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for WireCapability

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 WireCapability