- GatewayFixture: polls /gatewayz monitoring endpoint until both servers
report num_gateways >= 1, replacing Task.Delay with proper synchronization
- GatewayTests: two tests covering cross-gateway delivery and interest-only
no-delivery behaviour, using double PingAsync() instead of Task.Delay
- LeafNodeTests: replace Task.Delay(500) with sub.PingAsync()+pub.PingAsync()
to properly fence subscription propagation without timing dependencies
- Fix GatewayManager.StartAsync to read remotes from RemoteGateways (config-
parsed) in addition to the legacy Remotes list, enabling config-file-driven
outbound gateway connections
Adds GatewayConnectionState enum, GatewayRegistration record with atomic
message counters, and a full registry API on GatewayManager: RegisterGateway,
UpdateState, GetRegistration, GetAllRegistrations, UnregisterGateway,
GetConnectedGatewayCount, IncrementMessagesSent, IncrementMessagesReceived.
Covers 11 new tests in GatewayRegistrationTests.cs (all passing).
Add ReplyMapCache to ReplyMapper.cs — an LRU cache with TTL expiration
for gateway reply subject mappings, avoiding repeated string parsing on
the hot path. Includes 10 unit tests covering LRU eviction, TTL expiry,
hit/miss counters, PurgeExpired, and Count.
Adds per-account subscription tracking to GatewayConnection via
AddAccountSubscription/RemoveAccountSubscription/GetAccountSubscriptions/
AccountSubscriptionCount, with corresponding SendAccountSubscriptions and
GetAccountSubscriptions helpers on GatewayManager. Covered by 10 new unit tests.
Implements ProcessImplicitRoute and ForwardNewRouteInfoToKnownServers on RouteManager,
and ProcessImplicitGateway on GatewayManager, mirroring Go server/route.go and
server/gateway.go INFO gossip-based peer discovery. Adds ConnectUrls to ServerInfo
and introduces GatewayInfo model. 12 new unit tests in ImplicitDiscoveryTests.
Ports the gateway interest-only mode from Go (gateway.go:100-150, 1500-1600):
- Add GatewayInterestTracker with Optimistic/Transitioning/InterestOnly modes
- In Optimistic mode, track no-interest set; switch to InterestOnly when set
exceeds threshold (default 1000, matching Go defaultGatewayMaxRUnsubThreshold)
- In InterestOnly mode, only forward subjects with tracked RS+ interest;
use SubjectMatch.MatchLiteral for wildcard pattern support
- Integrate tracker into GatewayConnection: A+/A- messages update tracker,
SendMessageAsync skips send when ShouldForward returns false
- Expose InterestTracker property on GatewayConnection for observability
- Add 13 unit tests covering all 8 specified behaviors plus edge cases
