Per-connection state without a connection_lifespan CM or a second Server
generic. Stateless is the default deployment, where a per-connection
lifespan would wrap a single request; the enter-late mechanics it would
need (race init vs dispatcher-done, ready-gate) were more machinery than
the use case warrants.
- Connection.session_id: str | None — set by the mount via
ServerRunner(session_id=...); per-connection, not per-message
- Connection.state: dict[str, Any] — scratch that persists across
requests; handlers/middleware read and write freely
- Connection.exit_stack: AsyncExitStack — handlers/middleware push CMs
or callbacks for per-connection teardown; ServerRunner.run() unwinds
it (shielded) in a finally after dispatcher.run() returns
- TransportContext.headers: Mapping[str, str] | None on the base —
populated by HTTP transports, None on stdio
- Context.session_id / Context.headers convenience properties
- create_direct_dispatcher_pair(headers=...) and
connected_runner(session_id=..., headers=...) for tests
Max Isbey
a1c16c4ee7