Struct StreamRequestExt 

pub struct StreamRequestExt {
    pub binding: Option<ClientBinding>,
    pub capability: Option<WireCapability>,
}

Optional StreamRequest extension fields (ADR 005 §Client identity binding), carried as trailing bytes after the StreamRequest message via the two-phase pattern (see encode_stream_request / parse_stream_request_ext).

Fields

binding: Option<ClientBinding>

Off-chain client identity binding (address + attesting signature). Grouped so a half-populated state (address without signature, or vice versa) is unrepresentable; absent ⇒ a registered/on-chain client.

capability: Option<WireCapability>

The pool owner’s spending capability for this stream’s signer, attached at session start so the delivering node can register the signer on that signer’s first on-chain redemption (ADR 003 §Capability delegation). Node-agnostic: the same capability is valid at every node the client streams from, since it grants spend against the pool, not against a specific delivering node. Absent ⇒ the node already has the signer registered (or the client is relying on a capability it sent on an earlier stream to a different node this session).

Implementations

impl StreamRequestExt

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

Validate the (if present) client binding and capability. Called by the node on the receive path after parse_stream_request_ext; kept separate from parsing so forward-compatible trailing bytes don’t couple to value checks.

Errors

MessageValidationError::InvalidBindingSigLen if a present binding has a wrong-length signature; MessageValidationError::EmptyCapabilitySignature if a present capability has an empty owner_signature.

Trait Implementations

impl Clone for StreamRequestExt

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 StreamRequestExt

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

Formats the value using the given formatter.

impl Default for StreamRequestExt

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for StreamRequestExt

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for StreamRequestExt

impl PartialEq for StreamRequestExt

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for StreamRequestExt

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 StreamRequestExt