feat(monitoring+events): add connz filtering, event payloads, and message trace context (E12+E13+E14)

- Add ConnzHandler with sorting, filtering, pagination, CID lookup, and closed connection ring buffer
- Add full Go events.go parity types (ConnectEventMsg, DisconnectEventMsg, ServerStatsMsg, etc.)
- Add MessageTraceContext for per-message trace propagation with header parsing
- 74 new tests (17 ConnzFilter + 16 EventPayload + 41 MessageTraceContext)
This commit is contained in:
Joseph Doherty
2026-02-24 16:17:21 -05:00
parent 37d3cc29ea
commit 94878d3dcc
10 changed files with 2595 additions and 15 deletions

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using System.Text.Json;
using NATS.Server.Events;
namespace NATS.Server.Tests.Events;
/// <summary>
/// Tests that all event DTOs have complete JSON fields matching Go's output.
/// Go reference: events.go:100-300 — TypedEvent, ServerInfo, ClientInfo,
/// DataStats, ServerStats, ConnectEventMsg, DisconnectEventMsg, AccountNumConns.
/// </summary>
public class EventPayloadTests
{
// --- EventServerInfo ---
[Fact]
public void EventServerInfo_serializes_all_fields_matching_Go()
{
var info = new EventServerInfo
{
Name = "test-server",
Host = "127.0.0.1",
Id = "ABCDEF123456",
Cluster = "test-cluster",
Domain = "test-domain",
Version = "2.10.0",
Tags = ["tag1", "tag2"],
Metadata = new Dictionary<string, string> { ["env"] = "test" },
JetStream = true,
Flags = 1,
Seq = 42,
Time = new DateTime(2025, 1, 1, 0, 0, 0, DateTimeKind.Utc),
};
var json = JsonSerializer.Serialize(info);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("name").GetString().ShouldBe("test-server");
root.GetProperty("host").GetString().ShouldBe("127.0.0.1");
root.GetProperty("id").GetString().ShouldBe("ABCDEF123456");
root.GetProperty("cluster").GetString().ShouldBe("test-cluster");
root.GetProperty("domain").GetString().ShouldBe("test-domain");
root.GetProperty("ver").GetString().ShouldBe("2.10.0");
root.GetProperty("tags").GetArrayLength().ShouldBe(2);
root.GetProperty("metadata").GetProperty("env").GetString().ShouldBe("test");
root.GetProperty("jetstream").GetBoolean().ShouldBeTrue();
root.GetProperty("flags").GetUInt64().ShouldBe(1UL);
root.GetProperty("seq").GetUInt64().ShouldBe(42UL);
root.GetProperty("time").GetDateTime().Year.ShouldBe(2025);
}
[Fact]
public void EventServerInfo_omits_null_optional_fields()
{
var info = new EventServerInfo
{
Name = "s",
Id = "ID",
};
var json = JsonSerializer.Serialize(info);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.TryGetProperty("cluster", out _).ShouldBeFalse();
root.TryGetProperty("domain", out _).ShouldBeFalse();
root.TryGetProperty("tags", out _).ShouldBeFalse();
root.TryGetProperty("metadata", out _).ShouldBeFalse();
}
// --- EventClientInfo ---
[Fact]
public void EventClientInfo_serializes_all_fields_matching_Go()
{
var ci = new EventClientInfo
{
Start = new DateTime(2025, 1, 1, 0, 0, 0, DateTimeKind.Utc),
Stop = new DateTime(2025, 1, 1, 1, 0, 0, DateTimeKind.Utc),
Host = "10.0.0.1",
Id = 99,
Account = "$G",
Service = "orders",
User = "admin",
Name = "my-client",
Lang = "go",
Version = "1.30.0",
RttNanos = 5_000_000, // 5ms
Server = "srv-1",
Cluster = "cluster-east",
Alternates = ["alt1", "alt2"],
Jwt = "eyJ...",
IssuerKey = "OABC...",
NameTag = "test-tag",
Tags = ["dev"],
Kind = "Client",
ClientType = "nats",
MqttClient = "mqtt-abc",
Nonce = "nonce123",
};
var json = JsonSerializer.Serialize(ci);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("host").GetString().ShouldBe("10.0.0.1");
root.GetProperty("id").GetUInt64().ShouldBe(99UL);
root.GetProperty("acc").GetString().ShouldBe("$G");
root.GetProperty("svc").GetString().ShouldBe("orders");
root.GetProperty("user").GetString().ShouldBe("admin");
root.GetProperty("name").GetString().ShouldBe("my-client");
root.GetProperty("lang").GetString().ShouldBe("go");
root.GetProperty("ver").GetString().ShouldBe("1.30.0");
root.GetProperty("rtt").GetInt64().ShouldBe(5_000_000);
root.GetProperty("server").GetString().ShouldBe("srv-1");
root.GetProperty("cluster").GetString().ShouldBe("cluster-east");
root.GetProperty("alts").GetArrayLength().ShouldBe(2);
root.GetProperty("jwt").GetString().ShouldBe("eyJ...");
root.GetProperty("issuer_key").GetString().ShouldBe("OABC...");
root.GetProperty("name_tag").GetString().ShouldBe("test-tag");
root.GetProperty("tags").GetArrayLength().ShouldBe(1);
root.GetProperty("kind").GetString().ShouldBe("Client");
root.GetProperty("client_type").GetString().ShouldBe("nats");
root.GetProperty("client_id").GetString().ShouldBe("mqtt-abc");
root.GetProperty("nonce").GetString().ShouldBe("nonce123");
}
[Fact]
public void EventClientInfo_omits_null_optional_fields()
{
var ci = new EventClientInfo { Id = 1 };
var json = JsonSerializer.Serialize(ci);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.TryGetProperty("svc", out _).ShouldBeFalse();
root.TryGetProperty("user", out _).ShouldBeFalse();
root.TryGetProperty("server", out _).ShouldBeFalse();
root.TryGetProperty("cluster", out _).ShouldBeFalse();
root.TryGetProperty("alts", out _).ShouldBeFalse();
root.TryGetProperty("jwt", out _).ShouldBeFalse();
root.TryGetProperty("issuer_key", out _).ShouldBeFalse();
root.TryGetProperty("nonce", out _).ShouldBeFalse();
}
// --- DataStats ---
[Fact]
public void DataStats_serializes_with_optional_sub_stats()
{
var ds = new DataStats
{
Msgs = 100,
Bytes = 2048,
Gateways = new MsgBytesStats { Msgs = 10, Bytes = 256 },
Routes = new MsgBytesStats { Msgs = 50, Bytes = 1024 },
Leafs = new MsgBytesStats { Msgs = 40, Bytes = 768 },
};
var json = JsonSerializer.Serialize(ds);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("msgs").GetInt64().ShouldBe(100);
root.GetProperty("bytes").GetInt64().ShouldBe(2048);
root.GetProperty("gateways").GetProperty("msgs").GetInt64().ShouldBe(10);
root.GetProperty("routes").GetProperty("bytes").GetInt64().ShouldBe(1024);
root.GetProperty("leafs").GetProperty("msgs").GetInt64().ShouldBe(40);
}
[Fact]
public void DataStats_omits_null_sub_stats()
{
var ds = new DataStats { Msgs = 5, Bytes = 50 };
var json = JsonSerializer.Serialize(ds);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.TryGetProperty("gateways", out _).ShouldBeFalse();
root.TryGetProperty("routes", out _).ShouldBeFalse();
root.TryGetProperty("leafs", out _).ShouldBeFalse();
}
// --- ConnectEventMsg ---
[Fact]
public void ConnectEventMsg_has_correct_type_and_required_fields()
{
var evt = new ConnectEventMsg
{
Id = "evt-1",
Time = DateTime.UtcNow,
Server = new EventServerInfo { Name = "s1", Id = "SRV1" },
Client = new EventClientInfo { Id = 42, Name = "test-client" },
};
var json = JsonSerializer.Serialize(evt);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("type").GetString().ShouldBe("io.nats.server.advisory.v1.client_connect");
root.GetProperty("id").GetString().ShouldBe("evt-1");
root.GetProperty("server").GetProperty("name").GetString().ShouldBe("s1");
root.GetProperty("client").GetProperty("id").GetUInt64().ShouldBe(42UL);
}
// --- DisconnectEventMsg ---
[Fact]
public void DisconnectEventMsg_has_correct_type_and_data_stats()
{
var evt = new DisconnectEventMsg
{
Id = "evt-2",
Time = DateTime.UtcNow,
Server = new EventServerInfo { Name = "s1", Id = "SRV1" },
Client = new EventClientInfo { Id = 42 },
Sent = new DataStats { Msgs = 100, Bytes = 2000 },
Received = new DataStats { Msgs = 50, Bytes = 1000 },
Reason = "Client Closed",
};
var json = JsonSerializer.Serialize(evt);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("type").GetString().ShouldBe("io.nats.server.advisory.v1.client_disconnect");
root.GetProperty("sent").GetProperty("msgs").GetInt64().ShouldBe(100);
root.GetProperty("received").GetProperty("bytes").GetInt64().ShouldBe(1000);
root.GetProperty("reason").GetString().ShouldBe("Client Closed");
}
// --- AccountNumConns ---
[Fact]
public void AccountNumConns_serializes_all_Go_AccountStat_fields()
{
var evt = new AccountNumConns
{
Id = "evt-3",
Time = DateTime.UtcNow,
Server = new EventServerInfo { Name = "s1", Id = "SRV1" },
AccountName = "$G",
Name = "Global",
Connections = 5,
LeafNodes = 2,
TotalConnections = 100,
NumSubscriptions = 42,
Sent = new DataStats { Msgs = 500, Bytes = 10_000 },
Received = new DataStats { Msgs = 400, Bytes = 8_000 },
SlowConsumers = 1,
};
var json = JsonSerializer.Serialize(evt);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("type").GetString().ShouldBe("io.nats.server.advisory.v1.account_connections");
root.GetProperty("acc").GetString().ShouldBe("$G");
root.GetProperty("name").GetString().ShouldBe("Global");
root.GetProperty("conns").GetInt32().ShouldBe(5);
root.GetProperty("leafnodes").GetInt32().ShouldBe(2);
root.GetProperty("total_conns").GetInt32().ShouldBe(100);
root.GetProperty("num_subscriptions").GetUInt32().ShouldBe(42u);
root.GetProperty("sent").GetProperty("msgs").GetInt64().ShouldBe(500);
root.GetProperty("received").GetProperty("bytes").GetInt64().ShouldBe(8_000);
root.GetProperty("slow_consumers").GetInt64().ShouldBe(1);
}
// --- ServerStatsMsg ---
[Fact]
public void ServerStatsMsg_has_sent_received_and_breakdown_fields()
{
var msg = new ServerStatsMsg
{
Server = new EventServerInfo { Name = "s1", Id = "SRV1", Seq = 1 },
Stats = new ServerStatsData
{
Start = new DateTime(2025, 1, 1, 0, 0, 0, DateTimeKind.Utc),
Mem = 100_000_000,
Cores = 8,
Cpu = 12.5,
Connections = 10,
TotalConnections = 500,
ActiveAccounts = 3,
Subscriptions = 50,
Sent = new DataStats { Msgs = 1000, Bytes = 50_000 },
Received = new DataStats { Msgs = 800, Bytes = 40_000 },
InMsgs = 800,
OutMsgs = 1000,
InBytes = 40_000,
OutBytes = 50_000,
SlowConsumers = 2,
SlowConsumerStats = new SlowConsumersStats { Clients = 1, Routes = 1 },
StaleConnections = 3,
StaleConnectionStats = new StaleConnectionStats { Clients = 2, Leafs = 1 },
ActiveServers = 3,
Routes = [new RouteStat { Id = 1, Name = "r1", Sent = new DataStats { Msgs = 10 }, Received = new DataStats { Msgs = 5 }, Pending = 0 }],
Gateways = [new GatewayStat { Id = 1, Name = "gw1", Sent = new DataStats { Msgs = 20 }, Received = new DataStats { Msgs = 15 }, InboundConnections = 2 }],
},
};
var json = JsonSerializer.Serialize(msg);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
var stats = root.GetProperty("statsz");
stats.GetProperty("mem").GetInt64().ShouldBe(100_000_000);
stats.GetProperty("cores").GetInt32().ShouldBe(8);
stats.GetProperty("cpu").GetDouble().ShouldBe(12.5);
stats.GetProperty("connections").GetInt32().ShouldBe(10);
stats.GetProperty("total_connections").GetInt64().ShouldBe(500);
stats.GetProperty("active_accounts").GetInt32().ShouldBe(3);
stats.GetProperty("subscriptions").GetInt64().ShouldBe(50);
stats.GetProperty("sent").GetProperty("msgs").GetInt64().ShouldBe(1000);
stats.GetProperty("received").GetProperty("bytes").GetInt64().ShouldBe(40_000);
stats.GetProperty("in_msgs").GetInt64().ShouldBe(800);
stats.GetProperty("out_msgs").GetInt64().ShouldBe(1000);
stats.GetProperty("slow_consumers").GetInt64().ShouldBe(2);
stats.GetProperty("slow_consumer_stats").GetProperty("clients").GetInt64().ShouldBe(1);
stats.GetProperty("stale_connections").GetInt64().ShouldBe(3);
stats.GetProperty("stale_connection_stats").GetProperty("leafs").GetInt64().ShouldBe(1);
stats.GetProperty("active_servers").GetInt32().ShouldBe(3);
stats.GetProperty("routes").GetArrayLength().ShouldBe(1);
stats.GetProperty("routes")[0].GetProperty("rid").GetUInt64().ShouldBe(1UL);
stats.GetProperty("gateways").GetArrayLength().ShouldBe(1);
stats.GetProperty("gateways")[0].GetProperty("name").GetString().ShouldBe("gw1");
}
// --- AuthErrorEventMsg ---
[Fact]
public void AuthErrorEventMsg_has_correct_type()
{
var evt = new AuthErrorEventMsg
{
Id = "evt-4",
Time = DateTime.UtcNow,
Server = new EventServerInfo { Name = "s1", Id = "SRV1" },
Client = new EventClientInfo { Id = 99, Host = "10.0.0.1" },
Reason = "Authorization Violation",
};
var json = JsonSerializer.Serialize(evt);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("type").GetString().ShouldBe("io.nats.server.advisory.v1.client_auth");
root.GetProperty("reason").GetString().ShouldBe("Authorization Violation");
root.GetProperty("client").GetProperty("host").GetString().ShouldBe("10.0.0.1");
}
// --- OcspPeerRejectEventMsg ---
[Fact]
public void OcspPeerRejectEventMsg_has_correct_type()
{
var evt = new OcspPeerRejectEventMsg
{
Id = "evt-5",
Time = DateTime.UtcNow,
Kind = "client",
Server = new EventServerInfo { Name = "s1", Id = "SRV1" },
Reason = "OCSP revoked",
};
var json = JsonSerializer.Serialize(evt);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("type").GetString().ShouldBe("io.nats.server.advisory.v1.ocsp_peer_reject");
root.GetProperty("kind").GetString().ShouldBe("client");
root.GetProperty("reason").GetString().ShouldBe("OCSP revoked");
}
// --- ShutdownEventMsg ---
[Fact]
public void ShutdownEventMsg_serializes_reason()
{
var evt = new ShutdownEventMsg
{
Server = new EventServerInfo { Name = "s1", Id = "SRV1" },
Reason = "Server Shutdown",
};
var json = JsonSerializer.Serialize(evt);
var doc = JsonDocument.Parse(json);
doc.RootElement.GetProperty("reason").GetString().ShouldBe("Server Shutdown");
}
// --- AccNumConnsReq ---
[Fact]
public void AccNumConnsReq_serializes_account()
{
var req = new AccNumConnsReq
{
Server = new EventServerInfo { Name = "s1", Id = "SRV1" },
Account = "myAccount",
};
var json = JsonSerializer.Serialize(req);
var doc = JsonDocument.Parse(json);
doc.RootElement.GetProperty("acc").GetString().ShouldBe("myAccount");
}
// --- Round-trip deserialization ---
[Fact]
public void ConnectEventMsg_roundtrips_through_json()
{
var original = new ConnectEventMsg
{
Id = "rt-1",
Time = new DateTime(2025, 6, 15, 12, 0, 0, DateTimeKind.Utc),
Server = new EventServerInfo { Name = "srv", Id = "SRV1", Version = "2.10.0", Seq = 5 },
Client = new EventClientInfo
{
Id = 42,
Host = "10.0.0.1",
Account = "$G",
Name = "test",
Lang = "dotnet",
Version = "1.0.0",
RttNanos = 1_000_000,
Kind = "Client",
},
};
var json = JsonSerializer.Serialize(original);
var deserialized = JsonSerializer.Deserialize<ConnectEventMsg>(json);
deserialized.ShouldNotBeNull();
deserialized.Type.ShouldBe(ConnectEventMsg.EventType);
deserialized.Id.ShouldBe("rt-1");
deserialized.Server.Name.ShouldBe("srv");
deserialized.Server.Seq.ShouldBe(5UL);
deserialized.Client.Id.ShouldBe(42UL);
deserialized.Client.Kind.ShouldBe("Client");
deserialized.Client.RttNanos.ShouldBe(1_000_000);
}
[Fact]
public void ServerStatsMsg_roundtrips_through_json()
{
var original = new ServerStatsMsg
{
Server = new EventServerInfo { Name = "srv", Id = "SRV1" },
Stats = new ServerStatsData
{
Connections = 10,
Sent = new DataStats { Msgs = 100, Bytes = 5000 },
Received = new DataStats { Msgs = 80, Bytes = 4000 },
InMsgs = 80,
OutMsgs = 100,
},
};
var json = JsonSerializer.Serialize(original);
var deserialized = JsonSerializer.Deserialize<ServerStatsMsg>(json);
deserialized.ShouldNotBeNull();
deserialized.Stats.Connections.ShouldBe(10);
deserialized.Stats.Sent.Msgs.ShouldBe(100);
deserialized.Stats.Received.Bytes.ShouldBe(4000);
}
}

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using System.Text;
using System.Text.Json;
using NATS.Server.Events;
using NATS.Server.Internal;
namespace NATS.Server.Tests.Internal;
/// <summary>
/// Tests for MsgTraceContext: header parsing, event collection, trace propagation,
/// JetStream two-phase send, hop tracking, and JSON serialization.
/// Go reference: msgtrace.go — initMsgTrace, sendEvent, addEgressEvent,
/// addJetStreamEvent, genHeaderMapIfTraceHeadersPresent.
/// </summary>
public class MessageTraceContextTests
{
private static ReadOnlyMemory<byte> BuildHeaders(params (string key, string value)[] headers)
{
var sb = new StringBuilder("NATS/1.0\r\n");
foreach (var (key, value) in headers)
{
sb.Append($"{key}: {value}\r\n");
}
sb.Append("\r\n");
return Encoding.ASCII.GetBytes(sb.ToString());
}
// --- Header parsing ---
[Fact]
public void ParseTraceHeaders_returns_null_for_no_trace_headers()
{
var headers = BuildHeaders(("Content-Type", "text/plain"));
var result = MsgTraceContext.ParseTraceHeaders(headers.Span);
result.ShouldBeNull();
}
[Fact]
public void ParseTraceHeaders_returns_map_when_trace_dest_present()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, "trace.subject"),
("Content-Type", "text/plain"));
var result = MsgTraceContext.ParseTraceHeaders(headers.Span);
result.ShouldNotBeNull();
result.ShouldContainKey(MsgTraceHeaders.TraceDest);
result[MsgTraceHeaders.TraceDest][0].ShouldBe("trace.subject");
}
[Fact]
public void ParseTraceHeaders_returns_null_when_trace_disabled()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, MsgTraceHeaders.TraceDestDisabled));
var result = MsgTraceContext.ParseTraceHeaders(headers.Span);
result.ShouldBeNull();
}
[Fact]
public void ParseTraceHeaders_detects_traceparent_with_sampled_flag()
{
// W3C trace context: version-traceid-parentid-flags (01 = sampled)
var headers = BuildHeaders(
("traceparent", "00-0af7651916cd43dd8448eb211c80319c-b7ad6b7169203331-01"));
var result = MsgTraceContext.ParseTraceHeaders(headers.Span);
result.ShouldNotBeNull();
result.ShouldContainKey("traceparent");
}
[Fact]
public void ParseTraceHeaders_ignores_traceparent_without_sampled_flag()
{
// flags=00 means not sampled
var headers = BuildHeaders(
("traceparent", "00-0af7651916cd43dd8448eb211c80319c-b7ad6b7169203331-00"));
var result = MsgTraceContext.ParseTraceHeaders(headers.Span);
result.ShouldBeNull();
}
[Fact]
public void ParseTraceHeaders_returns_null_for_empty_input()
{
var result = MsgTraceContext.ParseTraceHeaders(ReadOnlySpan<byte>.Empty);
result.ShouldBeNull();
}
[Fact]
public void ParseTraceHeaders_returns_null_for_non_nats_header()
{
var headers = Encoding.ASCII.GetBytes("HTTP/1.1 200 OK\r\nFoo: bar\r\n\r\n");
var result = MsgTraceContext.ParseTraceHeaders(headers);
result.ShouldBeNull();
}
// --- Context creation ---
[Fact]
public void Create_returns_null_for_empty_headers()
{
var ctx = MsgTraceContext.Create(
ReadOnlyMemory<byte>.Empty,
clientId: 1,
clientName: "test",
accountName: "$G",
subject: "test.sub",
msgSize: 10);
ctx.ShouldBeNull();
}
[Fact]
public void Create_returns_null_for_headers_without_trace()
{
var headers = BuildHeaders(("Content-Type", "text/plain"));
var ctx = MsgTraceContext.Create(
headers,
clientId: 1,
clientName: "test",
accountName: "$G",
subject: "test.sub",
msgSize: 10);
ctx.ShouldBeNull();
}
[Fact]
public void Create_builds_context_with_ingress_event()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, "trace.dest"));
var ctx = MsgTraceContext.Create(
headers,
clientId: 42,
clientName: "my-publisher",
accountName: "$G",
subject: "orders.new",
msgSize: 128);
ctx.ShouldNotBeNull();
ctx.IsActive.ShouldBeTrue();
ctx.Destination.ShouldBe("trace.dest");
ctx.TraceOnly.ShouldBeFalse();
ctx.AccountName.ShouldBe("$G");
// Check ingress event
ctx.Event.Events.Count.ShouldBe(1);
var ingress = ctx.Event.Events[0].ShouldBeOfType<MsgTraceIngress>();
ingress.Type.ShouldBe(MsgTraceTypes.Ingress);
ingress.Cid.ShouldBe(42UL);
ingress.Name.ShouldBe("my-publisher");
ingress.Account.ShouldBe("$G");
ingress.Subject.ShouldBe("orders.new");
ingress.Error.ShouldBeNull();
// Check request info
ctx.Event.Request.MsgSize.ShouldBe(128);
ctx.Event.Request.Header.ShouldNotBeNull();
ctx.Event.Request.Header.ShouldContainKey(MsgTraceHeaders.TraceDest);
}
[Fact]
public void Create_with_trace_only_flag()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, "trace.dest"),
(MsgTraceHeaders.TraceOnly, "true"));
var ctx = MsgTraceContext.Create(
headers,
clientId: 1,
clientName: "test",
accountName: "$G",
subject: "test",
msgSize: 0);
ctx.ShouldNotBeNull();
ctx.TraceOnly.ShouldBeTrue();
}
[Fact]
public void Create_with_trace_only_flag_numeric()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, "trace.dest"),
(MsgTraceHeaders.TraceOnly, "1"));
var ctx = MsgTraceContext.Create(
headers,
clientId: 1,
clientName: "test",
accountName: "$G",
subject: "test",
msgSize: 0);
ctx.ShouldNotBeNull();
ctx.TraceOnly.ShouldBeTrue();
}
[Fact]
public void Create_without_trace_only_flag()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, "trace.dest"),
(MsgTraceHeaders.TraceOnly, "false"));
var ctx = MsgTraceContext.Create(
headers,
clientId: 1,
clientName: "test",
accountName: "$G",
subject: "test",
msgSize: 0);
ctx.ShouldNotBeNull();
ctx.TraceOnly.ShouldBeFalse();
}
[Fact]
public void Create_captures_hop_from_non_client_kind()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, "trace.dest"),
(MsgTraceHeaders.TraceHop, "1.2"));
var ctx = MsgTraceContext.Create(
headers,
clientId: 1,
clientName: "route-1",
accountName: "$G",
subject: "test",
msgSize: 0,
clientKind: MsgTraceContext.KindRouter);
ctx.ShouldNotBeNull();
ctx.Hop.ShouldBe("1.2");
}
[Fact]
public void Create_ignores_hop_from_client_kind()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, "trace.dest"),
(MsgTraceHeaders.TraceHop, "1.2"));
var ctx = MsgTraceContext.Create(
headers,
clientId: 1,
clientName: "test",
accountName: "$G",
subject: "test",
msgSize: 0,
clientKind: MsgTraceContext.KindClient);
ctx.ShouldNotBeNull();
ctx.Hop.ShouldBe(""); // Client hop is ignored
}
// --- Event recording ---
[Fact]
public void SetIngressError_sets_error_on_first_event()
{
var ctx = CreateSimpleContext();
ctx.SetIngressError("publish denied");
var ingress = ctx.Event.Events[0].ShouldBeOfType<MsgTraceIngress>();
ingress.Error.ShouldBe("publish denied");
}
[Fact]
public void AddSubjectMappingEvent_appends_mapping()
{
var ctx = CreateSimpleContext();
ctx.AddSubjectMappingEvent("orders.mapped");
ctx.Event.Events.Count.ShouldBe(2);
var mapping = ctx.Event.Events[1].ShouldBeOfType<MsgTraceSubjectMapping>();
mapping.Type.ShouldBe(MsgTraceTypes.SubjectMapping);
mapping.MappedTo.ShouldBe("orders.mapped");
}
[Fact]
public void AddEgressEvent_appends_egress_with_subscription_and_queue()
{
var ctx = CreateSimpleContext();
ctx.AddEgressEvent(
clientId: 99,
clientName: "subscriber",
clientKind: MsgTraceContext.KindClient,
subscriptionSubject: "orders.>",
queue: "workers");
ctx.Event.Events.Count.ShouldBe(2);
var egress = ctx.Event.Events[1].ShouldBeOfType<MsgTraceEgress>();
egress.Type.ShouldBe(MsgTraceTypes.Egress);
egress.Kind.ShouldBe(MsgTraceContext.KindClient);
egress.Cid.ShouldBe(99UL);
egress.Name.ShouldBe("subscriber");
egress.Subscription.ShouldBe("orders.>");
egress.Queue.ShouldBe("workers");
}
[Fact]
public void AddEgressEvent_records_account_when_different_from_ingress()
{
var ctx = CreateSimpleContext(accountName: "acctA");
ctx.AddEgressEvent(
clientId: 99,
clientName: "subscriber",
clientKind: MsgTraceContext.KindClient,
subscriptionSubject: "api.>",
account: "acctB");
var egress = ctx.Event.Events[1].ShouldBeOfType<MsgTraceEgress>();
egress.Account.ShouldBe("acctB");
}
[Fact]
public void AddEgressEvent_omits_account_when_same_as_ingress()
{
var ctx = CreateSimpleContext(accountName: "$G");
ctx.AddEgressEvent(
clientId: 99,
clientName: "subscriber",
clientKind: MsgTraceContext.KindClient,
subscriptionSubject: "test",
account: "$G");
var egress = ctx.Event.Events[1].ShouldBeOfType<MsgTraceEgress>();
egress.Account.ShouldBeNull();
}
[Fact]
public void AddEgressEvent_for_router_omits_subscription_and_queue()
{
var ctx = CreateSimpleContext();
ctx.AddEgressEvent(
clientId: 1,
clientName: "route-1",
clientKind: MsgTraceContext.KindRouter,
subscriptionSubject: "should.not.appear",
queue: "should.not.appear");
var egress = ctx.Event.Events[1].ShouldBeOfType<MsgTraceEgress>();
egress.Subscription.ShouldBeNull();
egress.Queue.ShouldBeNull();
}
[Fact]
public void AddEgressEvent_with_error()
{
var ctx = CreateSimpleContext();
ctx.AddEgressEvent(
clientId: 50,
clientName: "slow-client",
clientKind: MsgTraceContext.KindClient,
error: MsgTraceErrors.ClientClosed);
var egress = ctx.Event.Events[1].ShouldBeOfType<MsgTraceEgress>();
egress.Error.ShouldBe(MsgTraceErrors.ClientClosed);
}
[Fact]
public void AddStreamExportEvent_records_account_and_target()
{
var ctx = CreateSimpleContext();
ctx.AddStreamExportEvent("exportAccount", "export.subject");
ctx.Event.Events.Count.ShouldBe(2);
var se = ctx.Event.Events[1].ShouldBeOfType<MsgTraceStreamExport>();
se.Type.ShouldBe(MsgTraceTypes.StreamExport);
se.Account.ShouldBe("exportAccount");
se.To.ShouldBe("export.subject");
}
[Fact]
public void AddServiceImportEvent_records_from_and_to()
{
var ctx = CreateSimpleContext();
ctx.AddServiceImportEvent("importAccount", "from.subject", "to.subject");
ctx.Event.Events.Count.ShouldBe(2);
var si = ctx.Event.Events[1].ShouldBeOfType<MsgTraceServiceImport>();
si.Type.ShouldBe(MsgTraceTypes.ServiceImport);
si.Account.ShouldBe("importAccount");
si.From.ShouldBe("from.subject");
si.To.ShouldBe("to.subject");
}
// --- JetStream events ---
[Fact]
public void AddJetStreamEvent_records_stream_name()
{
var ctx = CreateSimpleContext();
ctx.AddJetStreamEvent("ORDERS");
ctx.Event.Events.Count.ShouldBe(2);
var js = ctx.Event.Events[1].ShouldBeOfType<MsgTraceJetStreamEntry>();
js.Type.ShouldBe(MsgTraceTypes.JetStream);
js.Stream.ShouldBe("ORDERS");
}
[Fact]
public void UpdateJetStreamEvent_sets_subject_and_nointerest()
{
var ctx = CreateSimpleContext();
ctx.AddJetStreamEvent("ORDERS");
ctx.UpdateJetStreamEvent("orders.new", noInterest: true);
var js = ctx.Event.Events[1].ShouldBeOfType<MsgTraceJetStreamEntry>();
js.Subject.ShouldBe("orders.new");
js.NoInterest.ShouldBeTrue();
}
[Fact]
public void SendEventFromJetStream_requires_both_phases()
{
var ctx = CreateSimpleContext();
ctx.AddJetStreamEvent("ORDERS");
bool published = false;
ctx.PublishCallback = (dest, reply, body) => { published = true; };
// Phase 1: message path calls SendEvent — should not publish yet
ctx.SendEvent();
published.ShouldBeFalse();
// Phase 2: JetStream path calls SendEventFromJetStream — now publishes
ctx.SendEventFromJetStream();
published.ShouldBeTrue();
}
[Fact]
public void SendEventFromJetStream_with_error()
{
var ctx = CreateSimpleContext();
ctx.AddJetStreamEvent("ORDERS");
object? publishedBody = null;
ctx.PublishCallback = (dest, reply, body) => { publishedBody = body; };
ctx.SendEvent(); // Phase 1
ctx.SendEventFromJetStream("stream full"); // Phase 2
publishedBody.ShouldNotBeNull();
var js = ctx.Event.Events[1].ShouldBeOfType<MsgTraceJetStreamEntry>();
js.Error.ShouldBe("stream full");
}
// --- Hop tracking ---
[Fact]
public void SetHopHeader_increments_and_builds_hop_id()
{
var ctx = CreateSimpleContext();
ctx.SetHopHeader();
ctx.Event.Hops.ShouldBe(1);
ctx.NextHop.ShouldBe("1");
ctx.SetHopHeader();
ctx.Event.Hops.ShouldBe(2);
ctx.NextHop.ShouldBe("2");
}
[Fact]
public void SetHopHeader_chains_from_existing_hop()
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, "trace.dest"),
(MsgTraceHeaders.TraceHop, "1"));
var ctx = MsgTraceContext.Create(
headers,
clientId: 1,
clientName: "router",
accountName: "$G",
subject: "test",
msgSize: 0,
clientKind: MsgTraceContext.KindRouter);
ctx.ShouldNotBeNull();
ctx.Hop.ShouldBe("1");
ctx.SetHopHeader();
ctx.NextHop.ShouldBe("1.1");
ctx.SetHopHeader();
ctx.NextHop.ShouldBe("1.2");
}
[Fact]
public void AddEgressEvent_captures_and_clears_next_hop()
{
var ctx = CreateSimpleContext();
ctx.SetHopHeader();
ctx.NextHop.ShouldBe("1");
ctx.AddEgressEvent(1, "route-1", MsgTraceContext.KindRouter);
var egress = ctx.Event.Events[1].ShouldBeOfType<MsgTraceEgress>();
egress.Hop.ShouldBe("1");
// NextHop should be cleared after adding egress
ctx.NextHop.ShouldBe("");
}
// --- SendEvent (non-JetStream) ---
[Fact]
public void SendEvent_publishes_immediately_without_jetstream()
{
var ctx = CreateSimpleContext();
string? publishedDest = null;
ctx.PublishCallback = (dest, reply, body) => { publishedDest = dest; };
ctx.SendEvent();
publishedDest.ShouldBe("trace.dest");
}
// --- JSON serialization ---
[Fact]
public void MsgTraceEvent_serializes_to_valid_json()
{
var ctx = CreateSimpleContext();
ctx.Event.Server = new EventServerInfo { Name = "srv", Id = "SRV1" };
ctx.AddSubjectMappingEvent("mapped.subject");
ctx.AddEgressEvent(99, "subscriber", MsgTraceContext.KindClient, "test.>", "q1");
ctx.AddStreamExportEvent("exportAcc", "export.subject");
var json = JsonSerializer.Serialize(ctx.Event);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.GetProperty("server").GetProperty("name").GetString().ShouldBe("srv");
root.GetProperty("request").GetProperty("msgsize").GetInt32().ShouldBe(64);
root.GetProperty("events").GetArrayLength().ShouldBe(4);
var events = root.GetProperty("events");
events[0].GetProperty("type").GetString().ShouldBe(MsgTraceTypes.Ingress);
events[1].GetProperty("type").GetString().ShouldBe(MsgTraceTypes.SubjectMapping);
events[2].GetProperty("type").GetString().ShouldBe(MsgTraceTypes.Egress);
events[3].GetProperty("type").GetString().ShouldBe(MsgTraceTypes.StreamExport);
}
[Fact]
public void MsgTraceIngress_json_omits_null_error()
{
var ingress = new MsgTraceIngress
{
Type = MsgTraceTypes.Ingress,
Cid = 1,
Account = "$G",
Subject = "test",
};
var json = JsonSerializer.Serialize<MsgTraceEntry>(ingress);
var doc = JsonDocument.Parse(json);
doc.RootElement.TryGetProperty("error", out _).ShouldBeFalse();
}
[Fact]
public void MsgTraceEgress_json_omits_null_optional_fields()
{
var egress = new MsgTraceEgress
{
Type = MsgTraceTypes.Egress,
Kind = MsgTraceContext.KindRouter,
Cid = 5,
};
var json = JsonSerializer.Serialize<MsgTraceEntry>(egress);
var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
root.TryGetProperty("hop", out _).ShouldBeFalse();
root.TryGetProperty("acc", out _).ShouldBeFalse();
root.TryGetProperty("sub", out _).ShouldBeFalse();
root.TryGetProperty("queue", out _).ShouldBeFalse();
root.TryGetProperty("error", out _).ShouldBeFalse();
}
[Fact]
public void Full_trace_event_with_all_event_types_serializes_correctly()
{
var ctx = CreateSimpleContext();
ctx.Event.Server = new EventServerInfo { Name = "test-srv", Id = "ABC123" };
ctx.AddSubjectMappingEvent("mapped");
ctx.AddServiceImportEvent("importAcc", "from.sub", "to.sub");
ctx.AddStreamExportEvent("exportAcc", "export.sub");
ctx.AddJetStreamEvent("ORDERS");
ctx.UpdateJetStreamEvent("orders.new", false);
ctx.AddEgressEvent(100, "sub-1", MsgTraceContext.KindClient, "orders.>", "workers");
ctx.AddEgressEvent(200, "route-east", MsgTraceContext.KindRouter, error: MsgTraceErrors.NoSupport);
var json = JsonSerializer.Serialize(ctx.Event);
var doc = JsonDocument.Parse(json);
var events = doc.RootElement.GetProperty("events");
events.GetArrayLength().ShouldBe(7);
events[0].GetProperty("type").GetString().ShouldBe("in");
events[1].GetProperty("type").GetString().ShouldBe("sm");
events[2].GetProperty("type").GetString().ShouldBe("si");
events[3].GetProperty("type").GetString().ShouldBe("se");
events[4].GetProperty("type").GetString().ShouldBe("js");
events[5].GetProperty("type").GetString().ShouldBe("eg");
events[6].GetProperty("type").GetString().ShouldBe("eg");
}
// --- Helper ---
private static MsgTraceContext CreateSimpleContext(string destination = "trace.dest", string accountName = "$G")
{
var headers = BuildHeaders(
(MsgTraceHeaders.TraceDest, destination));
var ctx = MsgTraceContext.Create(
headers,
clientId: 1,
clientName: "publisher",
accountName: accountName,
subject: "test.subject",
msgSize: 64);
ctx.ShouldNotBeNull();
return ctx;
}
}

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using System.Net;
using System.Net.Sockets;
using System.Text;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging.Abstractions;
using NATS.Server;
using NATS.Server.Auth;
using NATS.Server.Monitoring;
namespace NATS.Server.Tests.Monitoring;
/// <summary>
/// Tests for ConnzHandler filtering, sorting, pagination, and closed connection
/// ring buffer behavior.
/// Go reference: monitor_test.go — TestConnz, TestConnzSortedByCid, TestConnzSortedByBytesTo,
/// TestConnzFilter, TestConnzWithCID, TestConnzOffsetAndLimit.
/// </summary>
public class ConnzFilterTests : IAsyncLifetime
{
private readonly NatsServer _server;
private readonly NatsOptions _opts;
private readonly CancellationTokenSource _cts = new();
private readonly List<Socket> _sockets = [];
public ConnzFilterTests()
{
_opts = new NatsOptions
{
Port = GetFreePort(),
MaxClosedClients = 100,
Users =
[
new User { Username = "alice", Password = "pw", Account = "acctA" },
new User { Username = "bob", Password = "pw", Account = "acctB" },
],
};
_server = new NatsServer(_opts, NullLoggerFactory.Instance);
}
public async Task InitializeAsync()
{
_ = _server.StartAsync(_cts.Token);
await _server.WaitForReadyAsync();
}
public async Task DisposeAsync()
{
foreach (var s in _sockets)
{
try { s.Shutdown(SocketShutdown.Both); } catch { }
s.Dispose();
}
await _cts.CancelAsync();
_server.Dispose();
}
private static int GetFreePort()
{
using var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
sock.Bind(new IPEndPoint(IPAddress.Loopback, 0));
return ((IPEndPoint)sock.LocalEndPoint!).Port;
}
private async Task<Socket> ConnectAsync(string user, string? subjectToSubscribe = null)
{
var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
_sockets.Add(sock);
await sock.ConnectAsync(IPAddress.Loopback, _opts.Port);
var buf = new byte[4096];
await sock.ReceiveAsync(buf, SocketFlags.None); // INFO
var connect = $"CONNECT {{\"user\":\"{user}\",\"pass\":\"pw\"}}\r\n";
await sock.SendAsync(Encoding.ASCII.GetBytes(connect));
if (subjectToSubscribe != null)
{
await sock.SendAsync(Encoding.ASCII.GetBytes($"SUB {subjectToSubscribe} sid1\r\n"));
}
await sock.SendAsync("PING\r\n"u8.ToArray());
await ReadUntilAsync(sock, "PONG");
return sock;
}
private Connz GetConnz(string queryString = "")
{
var ctx = new DefaultHttpContext();
ctx.Request.QueryString = new QueryString(queryString);
return new ConnzHandler(_server).HandleConnz(ctx);
}
// --- Sort tests ---
[Fact]
public async Task Sort_by_cid_returns_ascending_order()
{
await ConnectAsync("alice");
await ConnectAsync("bob");
await Task.Delay(50);
var connz = GetConnz("?sort=cid");
connz.Conns.Length.ShouldBeGreaterThanOrEqualTo(2);
for (int i = 1; i < connz.Conns.Length; i++)
{
connz.Conns[i].Cid.ShouldBeGreaterThan(connz.Conns[i - 1].Cid);
}
}
[Fact]
public async Task Sort_by_bytes_to_returns_descending_order()
{
var sock1 = await ConnectAsync("alice");
var sock2 = await ConnectAsync("bob");
await Task.Delay(50);
// Publish some data through sock1 to accumulate bytes
await sock1.SendAsync(Encoding.ASCII.GetBytes("SUB test 1\r\nPUB test 10\r\n1234567890\r\n"));
await Task.Delay(100);
var connz = GetConnz("?sort=bytes_to");
connz.Conns.Length.ShouldBeGreaterThanOrEqualTo(2);
for (int i = 1; i < connz.Conns.Length; i++)
{
connz.Conns[i].OutBytes.ShouldBeLessThanOrEqualTo(connz.Conns[i - 1].OutBytes);
}
}
[Fact]
public async Task Sort_by_msgs_from_returns_descending_order()
{
var sock1 = await ConnectAsync("alice");
await Task.Delay(50);
// Send a PUB to increment InMsgs
await sock1.SendAsync(Encoding.ASCII.GetBytes("PUB test 3\r\nabc\r\n"));
await Task.Delay(100);
var connz = GetConnz("?sort=msgs_from");
connz.Conns.Length.ShouldBeGreaterThanOrEqualTo(1);
for (int i = 1; i < connz.Conns.Length; i++)
{
connz.Conns[i].InMsgs.ShouldBeLessThanOrEqualTo(connz.Conns[i - 1].InMsgs);
}
}
[Fact]
public async Task Sort_by_subs_returns_descending_order()
{
// Alice has 2 subs, Bob has 1
var sock1 = await ConnectAsync("alice", "test.a");
await sock1.SendAsync(Encoding.ASCII.GetBytes("SUB test.b sid2\r\n"));
var sock2 = await ConnectAsync("bob", "test.c");
await Task.Delay(100);
var connz = GetConnz("?sort=subs");
connz.Conns.Length.ShouldBeGreaterThanOrEqualTo(2);
for (int i = 1; i < connz.Conns.Length; i++)
{
connz.Conns[i].NumSubs.ShouldBeLessThanOrEqualTo(connz.Conns[i - 1].NumSubs);
}
}
[Fact]
public async Task Sort_by_start_returns_ascending_order()
{
await ConnectAsync("alice");
await Task.Delay(20);
await ConnectAsync("bob");
await Task.Delay(50);
var connz = GetConnz("?sort=start");
connz.Conns.Length.ShouldBeGreaterThanOrEqualTo(2);
for (int i = 1; i < connz.Conns.Length; i++)
{
connz.Conns[i].Start.ShouldBeGreaterThanOrEqualTo(connz.Conns[i - 1].Start);
}
}
// --- Filter tests ---
[Fact]
public async Task Filter_by_account_returns_only_matching_connections()
{
await ConnectAsync("alice");
await ConnectAsync("bob");
await Task.Delay(50);
var connz = GetConnz("?acc=acctA");
connz.Conns.ShouldAllBe(c => c.Account == "acctA");
connz.Conns.ShouldNotBeEmpty();
}
[Fact]
public async Task Filter_by_user_returns_only_matching_connections()
{
await ConnectAsync("alice");
await ConnectAsync("bob");
await Task.Delay(50);
var connz = GetConnz("?user=bob");
connz.Conns.ShouldAllBe(c => c.AuthorizedUser == "bob");
connz.Conns.ShouldNotBeEmpty();
}
[Fact]
public async Task Filter_by_subject_returns_matching_subscribers()
{
await ConnectAsync("alice", "orders.>");
await ConnectAsync("bob", "payments.>");
await Task.Delay(50);
var connz = GetConnz("?filter_subject=orders.new&subs=1");
connz.Conns.ShouldNotBeEmpty();
connz.Conns.ShouldAllBe(c => c.Subs.Any(s => s.Contains("orders")));
}
// --- Pagination tests ---
[Fact]
public async Task Offset_and_limit_paginates_results()
{
await ConnectAsync("alice");
await ConnectAsync("bob");
await ConnectAsync("alice");
await Task.Delay(50);
var page1 = GetConnz("?sort=cid&limit=2&offset=0");
page1.Conns.Length.ShouldBe(2);
page1.Total.ShouldBeGreaterThanOrEqualTo(3);
page1.Offset.ShouldBe(0);
page1.Limit.ShouldBe(2);
var page2 = GetConnz("?sort=cid&limit=2&offset=2");
page2.Conns.Length.ShouldBeGreaterThanOrEqualTo(1);
page2.Offset.ShouldBe(2);
// Ensure no overlap between pages
var page1Cids = page1.Conns.Select(c => c.Cid).ToHashSet();
var page2Cids = page2.Conns.Select(c => c.Cid).ToHashSet();
page1Cids.Overlaps(page2Cids).ShouldBeFalse();
}
// --- CID lookup test ---
[Fact]
public async Task Cid_lookup_returns_single_connection()
{
await ConnectAsync("alice");
await ConnectAsync("bob");
await Task.Delay(50);
// Get all connections to find a known CID
var all = GetConnz("?sort=cid");
all.Conns.ShouldNotBeEmpty();
var targetCid = all.Conns[0].Cid;
var single = GetConnz($"?cid={targetCid}");
single.Conns.Length.ShouldBe(1);
single.Conns[0].Cid.ShouldBe(targetCid);
}
[Fact]
public void Cid_lookup_nonexistent_returns_empty()
{
var result = GetConnz("?cid=99999999");
result.Conns.Length.ShouldBe(0);
result.Total.ShouldBe(0);
}
// --- Closed connection tests ---
[Fact]
public async Task Closed_state_shows_disconnected_clients()
{
var sock = await ConnectAsync("alice");
await Task.Delay(50);
// Close the connection
sock.Shutdown(SocketShutdown.Both);
sock.Close();
_sockets.Remove(sock);
await Task.Delay(200);
var connz = GetConnz("?state=closed");
connz.Conns.ShouldNotBeEmpty();
connz.Conns.ShouldAllBe(c => c.Stop != null);
connz.Conns.ShouldAllBe(c => !string.IsNullOrEmpty(c.Reason));
}
[Fact]
public async Task All_state_shows_both_open_and_closed()
{
var sock1 = await ConnectAsync("alice");
var sock2 = await ConnectAsync("bob");
await Task.Delay(50);
// Close one connection
sock1.Shutdown(SocketShutdown.Both);
sock1.Close();
_sockets.Remove(sock1);
await Task.Delay(200);
var connz = GetConnz("?state=all");
connz.Total.ShouldBeGreaterThanOrEqualTo(2);
// Should have at least one open (bob) and one closed (alice)
connz.Conns.Any(c => c.Stop == null).ShouldBeTrue("expected at least one open connection");
connz.Conns.Any(c => c.Stop != null).ShouldBeTrue("expected at least one closed connection");
}
[Fact]
public async Task Closed_ring_buffer_caps_at_max()
{
// MaxClosedClients is 100, create and close 5 connections
for (int i = 0; i < 5; i++)
{
var sock = await ConnectAsync("alice");
await Task.Delay(20);
sock.Shutdown(SocketShutdown.Both);
sock.Close();
_sockets.Remove(sock);
await Task.Delay(100);
}
var connz = GetConnz("?state=closed");
connz.Total.ShouldBeLessThanOrEqualTo(_opts.MaxClosedClients);
}
// --- Sort fallback tests ---
[Fact]
public async Task Sort_by_stop_with_open_state_falls_back_to_cid()
{
await ConnectAsync("alice");
await ConnectAsync("bob");
await Task.Delay(50);
// sort=stop with state=open should fall back to cid sorting
var connz = GetConnz("?sort=stop&state=open");
connz.Conns.Length.ShouldBeGreaterThanOrEqualTo(2);
for (int i = 1; i < connz.Conns.Length; i++)
{
connz.Conns[i].Cid.ShouldBeGreaterThan(connz.Conns[i - 1].Cid);
}
}
// --- Combined filter + sort test ---
[Fact]
public async Task Account_filter_with_bytes_sort_and_limit()
{
// Connect multiple alice clients
for (int i = 0; i < 3; i++)
{
var sock = await ConnectAsync("alice");
// Send varying amounts of data
var data = new string('x', (i + 1) * 100);
await sock.SendAsync(Encoding.ASCII.GetBytes($"SUB test 1\r\nPUB test {data.Length}\r\n{data}\r\n"));
}
await ConnectAsync("bob");
await Task.Delay(100);
var connz = GetConnz("?acc=acctA&sort=bytes_to&limit=2");
connz.Conns.Length.ShouldBeLessThanOrEqualTo(2);
connz.Conns.ShouldAllBe(c => c.Account == "acctA");
}
[Fact]
public async Task Closed_cid_lookup_returns_from_ring_buffer()
{
var sock = await ConnectAsync("alice");
await Task.Delay(50);
// Get the CID before closing
var all = GetConnz("?sort=cid");
all.Conns.ShouldNotBeEmpty();
var targetCid = all.Conns.Last().Cid;
// Close the socket
sock.Shutdown(SocketShutdown.Both);
sock.Close();
_sockets.Remove(sock);
await Task.Delay(200);
// Look up closed connection by CID
var single = GetConnz($"?cid={targetCid}");
single.Conns.Length.ShouldBe(1);
single.Conns[0].Cid.ShouldBe(targetCid);
single.Conns[0].Stop.ShouldNotBeNull();
}
private static async Task ReadUntilAsync(Socket sock, string expected)
{
var buf = new byte[4096];
var all = new StringBuilder();
var deadline = DateTime.UtcNow.AddSeconds(5);
while (DateTime.UtcNow < deadline)
{
if (sock.Available > 0)
{
var n = await sock.ReceiveAsync(buf, SocketFlags.None);
all.Append(Encoding.ASCII.GetString(buf, 0, n));
if (all.ToString().Contains(expected))
return;
}
else
{
await Task.Delay(10);
}
}
throw new TimeoutException($"Did not receive '{expected}' within 5 seconds. Got: {all}");
}
}