A2aMailEnvelope class final

One fabric-mail envelope over the A2A wire.

Constructors

A2aMailEnvelope({required String id, required String from, required String to, required String text, required String sentAt, int hops = 0})

const

Properties

from → String

The sender's reply address: <mailbox>@<machine> when the sender knows its own machine name, the bare mailbox otherwise.

final

hashCode → int

The hash code for this object.

no setter, inherited

hops → int

Remaining relay budget, carried verbatim.

final

id → String

The fabric message id (kept stable across the boundary so at-least-once redelivery can be deduped by id).

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

sentAt → String

ISO 8601 send timestamp (UTC).

final

text → String

The message body.

final

to → String

The recipient mailbox on the receiving machine: a session display name, an absolute mailbox id, or a name/main form.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, dynamic>

toMetadata() → Map<String, dynamic>

The metadata map to attach to an A2A message/send.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

fromMetadata(Map<String, dynamic>? metadata) → A2aMailEnvelope?

Tolerant decode from message metadata: null unless the marker is present and the required fields are non-empty strings.