- 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
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.
Wire up the config parsing infrastructure into the server:
- NatsServer: add ReloadConfig() with digest-based change detection,
diff/validate, CLI override preservation, and side-effect triggers
- Program.cs: two-pass CLI parsing — load config file first, then
apply CLI args on top with InCmdLine tracking for reload precedence
- SIGHUP handler upgraded from stub warning to actual reload
- Remove config file "not yet supported" warning from StartAsync
- Add integration tests for config loading, CLI overrides, and
reload validation
- WsReadInfo: validate 64-bit frame payload length against maxPayload
before casting to int (prevents overflow/memory exhaustion)
- WsReadInfo: always send close response per RFC 6455 Section 5.5.1,
including for empty close frames
- WsUpgrade: restrict no-masking to leaf node connections only (browser
clients must always mask frames)
Port of Go server/reload.go option interface and diffing logic. Compares
NatsOptions property-by-property to detect changes, tags each with category
flags (logging, auth, TLS, non-reloadable), validates that non-reloadable
options (Host, Port, ServerName) are not changed at runtime, and provides
MergeCliOverrides to ensure CLI flags always take precedence over config
file values during hot reload.
- CreateCloseMessage now operates on UTF-8 byte length (matching Go's
len(body) behavior) instead of character length, with proper UTF-8
boundary detection during truncation
- WsCompression.Compress now uses try/finally for exception-safe disposal
of DeflateStream and MemoryStream
- Add MaxIncludeDepth = 10 constant and thread _includeDepth through ParserState
constructors, ProcessInclude, ParseFile (private overload), and ParseEnvValue
to prevent StackOverflowException from recursive includes
- Fix PopContext to check _ctxs.Count <= 1 instead of == 0 so the root context
is never popped, replacing silent crash with clear InvalidOperationException
- Add else throw in SetValue so unknown context types surface as bugs rather
than silently dropping values
Implement WsCompression with Compress/Decompress methods per RFC 7692.
Key .NET adaptation: Flush() without Dispose() on DeflateStream to produce
the correct sync flush marker that can be stripped and re-appended.
Wire OcspPeerVerify into the client-cert validation callback in
TlsHelper so revocation is checked online when the flag is set.
Add TlsHelper.BuildCertificateContext to build an
SslStreamCertificateContext with offline:false, enabling the runtime
to fetch and staple OCSP responses during the TLS handshake.
NatsServer applies the context at startup when OcspConfig.Mode is not
Never. Ten unit tests cover the config defaults, mode ordinals, and
the null-return invariants of BuildCertificateContext.
