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feat: add monitoring HTTP endpoints and TLS support

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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
This commit is contained in:
Joseph Doherty
2026-02-22 23:13:22 -05:00
parent a6e9bd1467 3b6bd08248
commit 4d89661e79
24 changed files with 2596 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
tests/NATS.Server.Tests/ClientTests.cs
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@@ -41,7 +41,7 @@ public class ClientTests : IAsyncDisposable
};
var authService = AuthService.Build(new NatsOptions());
_natsClient = new NatsClient(1, _serverSocket, new NatsOptions(), serverInfo, authService, null, NullLogger.Instance);
_natsClient = new NatsClient(1, new NetworkStream(_serverSocket, ownsSocket: false), _serverSocket, new NatsOptions(), serverInfo, authService, null, NullLogger.Instance, new ServerStats());
}
public async ValueTask DisposeAsync()
@@ -56,7 +56,7 @@ public class ClientTests : IAsyncDisposable
{
var runTask = _natsClient.RunAsync(_cts.Token);
// Read from client socket — should get INFO
// Read from client socket -- should get INFO
var buf = new byte[4096];
var n = await _clientSocket.ReceiveAsync(buf, SocketFlags.None);
var response = Encoding.ASCII.GetString(buf, 0, n);
@@ -80,7 +80,7 @@ public class ClientTests : IAsyncDisposable
// Send CONNECT then PING
await _clientSocket.SendAsync(Encoding.ASCII.GetBytes("CONNECT {}\r\nPING\r\n"));
// Read response — should get PONG
// Read response -- should get PONG
var n = await _clientSocket.ReceiveAsync(buf, SocketFlags.None);
var response = Encoding.ASCII.GetString(buf, 0, n);
@@ -128,7 +128,7 @@ public class ClientTests : IAsyncDisposable
response.ShouldBe("-ERR 'maximum connections exceeded'\r\n");
// Connection should be closed — next read returns 0
// Connection should be closed -- next read returns 0
n = await _clientSocket.ReceiveAsync(buf, SocketFlags.None, readCts.Token);
n.ShouldBe(0);
}