Add ProcessServiceImport method to NatsServer that transforms subjects
from importer to exporter namespace and delivers to destination account
subscribers. Wire service import checking into ProcessMessage so that
publishes matching a service import "From" pattern are automatically
forwarded to the destination account. Includes MapImportSubject for
wildcard-aware subject mapping and WireServiceImports for import setup.
Register VARZ, HEALTHZ, SUBSZ, STATSZ, and IDZ request-reply handlers
on $SYS.REQ.SERVER.{id}.* subjects and $SYS.REQ.SERVER.PING.* wildcard
subjects via InitEventTracking. Also excludes the $SYS system account
from the /subz monitoring endpoint by default since its subscriptions
are internal infrastructure.
Add 5 tests for JWT allowed_connection_types enforcement which the
authenticator does not yet implement. Two tests (reject MQTT-only for
STANDARD context, reject unknown-only types) fail on assertions because
JwtAuthenticator currently ignores the claim. Three tests (allow
STANDARD, allow with unknown mixed in, case-insensitive match) pass
trivially since the field is not checked.
Also adds ConnectionType property to ClientAuthContext (defaults to
"STANDARD") so the tests compile.
- Convert WsReadInfo from mutable struct to class (prevents silent copy bugs)
- Add handshake timeout enforcement via CancellationToken in WsUpgrade
- Use buffered reading (512 bytes) in ReadHttpRequestAsync instead of byte-at-a-time
- Add IAsyncDisposable to WsConnection for proper async cleanup
- Simplify redundant mask bit check in WsReadInfo
- Remove unused WsGuid and CompressLastBlock dead code from WsConstants
- Document single-reader assumption on WsConnection read-side state
Extract INatsClient interface from NatsClient to enable internal clients
(SYSTEM, ACCOUNT) to participate in the subscription system without
requiring a socket connection. Change Subscription.Client from concrete
NatsClient to INatsClient, keeping IMessageRouter and RemoveClient using
the concrete type since only socket clients need those paths.
Add WebSocket listener support to NatsServer alongside the existing TCP
listener. When WebSocketOptions.Port >= 0, the server binds a second
socket, performs HTTP upgrade via WsUpgrade.TryUpgradeAsync, wraps the
connection in WsConnection for transparent frame/deframe, and hands it
to the standard NatsClient pipeline.
Changes:
- NatsClient: add IsWebSocket and WsInfo properties
- NatsServer: add RunWebSocketAcceptLoopAsync and AcceptWebSocketClientAsync,
WS listener lifecycle in StartAsync/ShutdownAsync/Dispose
- NatsOptions: change WebSocketOptions.Port default from 0 to -1 (disabled)
- WsConnection.ReadAsync: fix premature end-of-stream when ReadFrames
returns no payloads by looping until data is available
- Add WsIntegration tests (connect, ping, pub/sub over WebSocket)
- Add WsConnection masked frame and end-of-stream unit tests
Covers 6 implementation layers: ClientKind enum + INatsClient interface,
event infrastructure with Channel<T>, system event publishing, request-reply
monitoring services, import/export model with ACCOUNT client, and response
routing with latency tracking.
