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1c0fc8fc118197250692f25b52b1c0570aadc4a5
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191 Commits

Author SHA1 Message Date
Joseph Doherty
f316e6e86e feat: add OcspMode enum, OcspConfig class, and wire into NatsOptions 
Introduces NATS.Server.Tls.OcspMode (Auto/Always/Must/Never matching
Go ocsp.go constants) and OcspConfig with Mode and OverrideUrls. Adds
OcspConfig? and OcspPeerVerify to NatsOptions for stapling configuration
and peer certificate revocation checking. Covered by 12 new unit tests.
 2026-02-23 04:23:14 -05:00
Joseph Doherty
c8b347cb96 feat: implement IAccountResolver interface and MemAccountResolver 
Adds the IAccountResolver interface (FetchAsync, StoreAsync, IsReadOnly)
and a MemAccountResolver backed by ConcurrentDictionary for in-memory
JWT storage in tests and simple operator deployments.

Reference: golang/nats-server/server/accounts.go:4035+
 2026-02-23 04:22:36 -05:00
Joseph Doherty
9fff5709c4 feat: add NATS config file lexer (port of Go conf/lex.go) 
Port the NATS configuration file lexer from Go's conf/lex.go to C#.
The lexer is a state-machine tokenizer that supports the NATS config
format: key-value pairs with =, :, or whitespace separators; nested
maps {}; arrays []; single and double quoted strings with escape
sequences; block strings (); variables $VAR; include directives;
comments (# and //); booleans; integers with size suffixes (kb, mb, gb);
floats; ISO8601 datetimes; and IP addresses.
 2026-02-23 04:20:56 -05:00
Joseph Doherty
cc5ce63cb9 Merge branch 'feature/sections-7-10-gaps' into main 2026-02-23 03:34:00 -05:00
Joseph Doherty
e31ba04fdb feat: add closed connection tracking, state filtering, ByStop/ByReason sorting 2026-02-23 01:01:56 -05:00
Joseph Doherty
dab8004d6b feat: cache INFO serialization — build once at startup instead of per-connection 
Avoids re-serializing the same ServerInfo JSON on every new connection. The
cache is rebuilt when the ephemeral port is resolved. Connections that carry a
per-connection nonce (NKey auth) continue to serialize individually so the nonce
is included correctly.
 2026-02-23 01:01:38 -05:00
Joseph Doherty
f0b5edd7c6 feat: add response permission tracking for dynamic reply subject authorization 2026-02-23 00:59:15 -05:00
Joseph Doherty
1f13269447 feat: implement TLS cert-to-user mapping via X500 DN matching 2026-02-23 00:55:29 -05:00
Joseph Doherty
7a897c1087 feat: add MaxSubs enforcement, delivery-time deny filtering, auto-unsub cleanup 2026-02-23 00:53:15 -05:00
Joseph Doherty
e9b6c7fdd3 feat: add protocol tracing (<<- op arg) at LogLevel.Trace 2026-02-23 00:52:00 -05:00
Joseph Doherty
1269ae8275 feat: implement /subz endpoint with account filter, test subject, and pagination 2026-02-23 00:50:26 -05:00
Joseph Doherty
0347e8a28c fix: increment _removes counter in RemoveBatch for accurate stats 2026-02-23 00:48:53 -05:00
Joseph Doherty
6afe11ad4d feat: add per-account connection/subscription limits with AccountConfig 2026-02-23 00:46:16 -05:00
Joseph Doherty
345e7ca15c feat: implement log reopening on SIGUSR1 signal 2026-02-23 00:46:09 -05:00
Joseph Doherty
cc0fe04f3c feat: add generation-based cache, Stats, HasInterest, NumInterest, RemoveBatch, All, ReverseMatch to SubList 2026-02-23 00:45:28 -05:00
Joseph Doherty
cf75077bc4 feat: add CLI flags for debug/trace modes, file logging, syslog, color, timestamps 2026-02-23 00:43:27 -05:00
Joseph Doherty
4ad821394b feat: add -D/-V/-DV debug/trace CLI flags and file logging support 2026-02-23 00:41:49 -05:00
Joseph Doherty
b7c0e321d9 fix: move stale connection stat increments to detection site in RunPingTimerAsync 2026-02-23 00:41:12 -05:00
Joseph Doherty
0ec5583422 fix: address code quality review findings for batch 1 
- SubjectsCollide: split tokens once upfront instead of O(n²) TokenAt calls
- NatsHeaderParser: manual digit accumulation avoids string allocation and overflow
- NatsHeaders: use IReadOnlyDictionary for Headers, immutable Invalid sentinel
- PermissionLruCache: add missing Count property
 2026-02-23 00:40:14 -05:00
Joseph Doherty
cd4ae3cce6 feat: add stale connection stats tracking and varz exposure 2026-02-23 00:38:43 -05:00
Joseph Doherty
eb25d52ed5 feat: add RTT tracking and first-PING delay to NatsClient 2026-02-23 00:34:30 -05:00
Joseph Doherty
dddced444e feat: add NumTokens, TokenAt, SubjectsCollide, UTF-8 validation to SubjectMatch 2026-02-23 00:33:43 -05:00
Joseph Doherty
e87d4c00d9 feat: add NatsHeaderParser for MIME header parsing 2026-02-23 00:33:24 -05:00
Joseph Doherty
7cf6bb866e feat: add PermissionLruCache (128-entry LRU) and wire into ClientPermissions 2026-02-23 00:33:15 -05:00
Joseph Doherty
17a0a217dd feat: add MaxSubs, MaxSubTokens, Debug, Trace, LogFile, LogSizeLimit, Tags to NatsOptions 2026-02-23 00:32:12 -05:00
Joseph Doherty
573cd06bb1 feat: add logging and timestamp options to NatsOptions 2026-02-23 00:29:45 -05:00
Joseph Doherty
a0f02d6641 chore: add Serilog.Sinks.File and SyslogMessages packages 2026-02-23 00:28:32 -05:00
Joseph Doherty
3941c85e76 Merge branch 'feature/core-lifecycle' into main 
Reconcile close reason tracking: feature branch's MarkClosed() and
ShouldSkipFlush/FlushAndCloseAsync now use main's ClientClosedReason
enum. ClosedState enum retained for forward compatibility.
 2026-02-23 00:09:30 -05:00
Joseph Doherty
f5c0c4f906 feat: wire pending bytes and close reason into connz monitoring 2026-02-22 23:57:39 -05:00
Joseph Doherty
2fb14821e0 feat: add no-responders CONNECT validation and tests 
Reject connections that send no_responders:true without headers:true,
since the 503 HMSG response requires header support. Add three tests:
connection rejection, acceptance with headers, and 503 delivery flow.
 2026-02-22 23:56:49 -05:00
Joseph Doherty
04305447f9 feat: implement verbose mode (+OK after commands) 
When a client sends CONNECT {"verbose":true}, the server now responds
with +OK\r\n after successfully processing CONNECT, PING, SUB, UNSUB,
and PUB/HPUB commands, matching the Go NATS server behavior.
 2026-02-22 23:54:41 -05:00
Joseph Doherty
df39ebdc58 feat: add signal handling (SIGTERM, SIGUSR2, SIGHUP) and CLI stubs 2026-02-22 23:52:49 -05:00
Joseph Doherty
bce793fd42 perf: batch stat increments per read cycle in ProcessCommandsAsync 
Accumulate InMsgs/InBytes locally per ReadAsync cycle and flush once,
reducing from 4 Interlocked operations per published message to 2 per
read cycle. This matches the Go server's approach of batching stats.
 2026-02-22 23:52:09 -05:00
Joseph Doherty
e57605f090 feat: add PID file and ports file support 2026-02-22 23:50:22 -05:00
Joseph Doherty
c522ce99f5 feat: add delivery tracking and no-responders 503 support to ProcessMessage 
When a PUB with a reply-to subject has no matching subscribers and the
sender opted into no_responders, send a 503 HMSG back on the reply
subject so request-reply callers can fail fast instead of timing out.
 2026-02-22 23:49:39 -05:00
Joseph Doherty
34067f2b9b feat: add lame duck mode with staggered client shutdown 2026-02-22 23:48:06 -05:00
Joseph Doherty
45de110a84 feat: add flush-before-close for graceful client shutdown 2026-02-22 23:45:26 -05:00
Joseph Doherty
b68f898fa0 feat: add graceful shutdown, accept loop backoff, and task tracking 2026-02-22 23:43:25 -05:00
Joseph Doherty
31660a4187 feat: replace inline writes with channel-based write loop and batch flush 2026-02-22 23:41:44 -05:00
Joseph Doherty
600c6f9e5a feat: add system account ($SYS) and server NKey identity stubs 2026-02-22 23:39:22 -05:00
Joseph Doherty
086b4f50e8 feat: add close reason tracking to NatsClient 2026-02-22 23:36:55 -05:00
Joseph Doherty
38eaaa8b83 feat: add ephemeral port (port=0) support 2026-02-22 23:36:01 -05:00
Joseph Doherty
ad6a02b9a2 refactor: replace _connectReceived with ClientFlagHolder and add CloseReason tracking 2026-02-22 23:35:35 -05:00
Joseph Doherty
9ae75207fc feat: add ClosedState enum ported from Go client.go 2026-02-22 23:34:05 -05:00
Joseph Doherty
61c6b832e5 feat: add MaxPending, WriteDeadline options and error constants 2026-02-22 23:33:49 -05:00
Joseph Doherty
d0aa6a5fdd feat: add lifecycle options (lame duck, PID file, ports file, config stub) 2026-02-22 23:33:44 -05:00
Joseph Doherty
1a916a3f36 feat: add ClientFlags bitfield with thread-safe holder 2026-02-22 23:33:21 -05:00
Joseph Doherty
8bbfa54058 feat: add ClientClosedReason enum with 16 close reason values 2026-02-22 23:33:13 -05:00
Joseph Doherty
4d89661e79 feat: add monitoring HTTP endpoints and TLS support 
Monitoring HTTP:
- /varz, /connz, /healthz via Kestrel Minimal API
- Pagination, sorting, subscription details on /connz
- ServerStats atomic counters, CPU/memory sampling
- CLI flags: -m, --http_port, --http_base_path, --https_port

TLS Support:
- 4-mode negotiation: no TLS, required, TLS-first, mixed
- Certificate loading, pinning (SHA-256), client cert verification
- PeekableStream for non-destructive TLS detection
- Token-bucket rate limiter for TLS handshakes
- CLI flags: --tls, --tlscert, --tlskey, --tlscacert, --tlsverify

29 new tests (78 → 107 total), all passing.

# Conflicts:
#	src/NATS.Server.Host/Program.cs
#	src/NATS.Server/NATS.Server.csproj
#	src/NATS.Server/NatsClient.cs
#	src/NATS.Server/NatsOptions.cs
#	src/NATS.Server/NatsServer.cs
#	src/NATS.Server/Protocol/NatsProtocol.cs
#	tests/NATS.Server.Tests/ClientTests.cs
 2026-02-22 23:13:22 -05:00
Joseph Doherty
a6e9bd1467 feat: add monitoring port CLI args to server host 
Support -m/--http_port, --http_base_path, and --https_port flags for
configuring the monitoring HTTP endpoint from the command line.
 2026-02-22 23:08:04 -05:00