feat: phase D protocol surfaces test parity — 75 new tests across MQTT and JWT
MQTT packet parsing (41 tests), QoS/session delivery (8 tests), and JWT claim edge cases (43 new tests). All 4 phases complete. 1081 total tests passing, 0 failures.
This commit is contained in:
Joseph Doherty
@@ -929,4 +929,697 @@ public class JwtTests
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claims.Nats.Pub.Allow.ShouldBeNull();
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claims.Nats.Pub.Deny.ShouldBeNull();
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}
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// =====================================================================
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// Response permission edge cases
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// Go reference: TestJWTUserResponsePermissionClaimsDefaultValues,
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// TestJWTUserResponsePermissionClaimsNegativeValues
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// =====================================================================
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[Fact]
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public void DecodeUserClaims_resp_with_zero_max_and_zero_ttl_is_present_but_zeroed()
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{
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// Go TestJWTUserResponsePermissionClaimsDefaultValues:
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// an empty ResponsePermission{} in the JWT serializes as max=0, ttl=0.
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// The .NET parser must round-trip those zero values rather than
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// treating the object as absent.
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var payloadJson = """
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{
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"sub":"UAXXX",
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"iss":"AAXXX",
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"iat":1700000000,
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"nats":{
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"resp":{"max":0,"ttl":0},
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"type":"user",
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"version":2
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}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeUserClaims(token);
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claims.ShouldNotBeNull();
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claims.Nats.ShouldNotBeNull();
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claims.Nats.Resp.ShouldNotBeNull();
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claims.Nats.Resp.MaxMsgs.ShouldBe(0);
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claims.Nats.Resp.TtlNanos.ShouldBe(0L);
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claims.Nats.Resp.Ttl.ShouldBe(TimeSpan.Zero);
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}
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[Fact]
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public void DecodeUserClaims_resp_with_negative_max_and_negative_ttl_round_trips()
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{
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// Go TestJWTUserResponsePermissionClaimsNegativeValues:
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// MaxMsgs=-1, Expires=-1s (== -1_000_000_000 ns).
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// The .NET parser must preserve negative values verbatim.
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var payloadJson = """
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{
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"sub":"UAXXX",
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"iss":"AAXXX",
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"iat":1700000000,
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"nats":{
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"resp":{"max":-1,"ttl":-1000000000},
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"type":"user",
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"version":2
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}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeUserClaims(token);
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claims.ShouldNotBeNull();
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claims.Nats.ShouldNotBeNull();
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claims.Nats.Resp.ShouldNotBeNull();
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claims.Nats.Resp.MaxMsgs.ShouldBe(-1);
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claims.Nats.Resp.TtlNanos.ShouldBe(-1_000_000_000L);
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}
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// =====================================================================
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// JWT expiration edge cases
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// Go reference: TestJWTUserExpired, TestJWTAccountExpired
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// =====================================================================
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[Fact]
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public void DecodeUserClaims_IsExpired_returns_true_when_expired_by_one_second()
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{
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// Mirrors the Go TestJWTUserExpired / TestJWTAccountExpired pattern:
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// exp is set to "now - 2 seconds" which is definitely past.
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var expiredByOneSecond = DateTimeOffset.UtcNow.AddSeconds(-1).ToUnixTimeSeconds();
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var payloadJson = $$"""
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{
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"sub":"UAXXX",
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"iss":"AAXXX",
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"iat":1700000000,
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"exp":{{expiredByOneSecond}},
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"nats":{"type":"user","version":2}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeUserClaims(token);
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claims.ShouldNotBeNull();
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claims.IsExpired().ShouldBeTrue();
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}
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[Fact]
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public void DecodeUserClaims_IsExpired_returns_false_when_not_yet_expired_by_one_second()
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{
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// Complementary case: exp is 1 second in the future — token is valid.
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var expiresSoon = DateTimeOffset.UtcNow.AddSeconds(1).ToUnixTimeSeconds();
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var payloadJson = $$"""
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{
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"sub":"UAXXX",
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"iss":"AAXXX",
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"iat":1700000000,
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"exp":{{expiresSoon}},
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"nats":{"type":"user","version":2}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeUserClaims(token);
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claims.ShouldNotBeNull();
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claims.IsExpired().ShouldBeFalse();
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}
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[Fact]
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public void DecodeAccountClaims_IsExpired_returns_true_when_account_is_expired()
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{
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// Mirrors Go TestJWTAccountExpired: iat = now-10s, exp = now-2s.
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var issuedAt = DateTimeOffset.UtcNow.AddSeconds(-10).ToUnixTimeSeconds();
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var expires = DateTimeOffset.UtcNow.AddSeconds(-2).ToUnixTimeSeconds();
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var payloadJson = $$"""
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{
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"sub":"AAXXX",
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"iss":"OAXXX",
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"iat":{{issuedAt}},
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"exp":{{expires}},
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"nats":{"type":"account","version":2}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeAccountClaims(token);
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claims.ShouldNotBeNull();
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claims.Expires.ShouldBe(expires);
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// AccountClaims uses the standard exp field; verify it's in the past
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DateTimeOffset.UtcNow.ToUnixTimeSeconds().ShouldBeGreaterThan(claims.Expires);
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}
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// =====================================================================
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// Signing key chain (multi-level) claim fields
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// Go reference: TestJWTUserSigningKey — user issued by account signing key
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// =====================================================================
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[Fact]
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public void DecodeUserClaims_parses_issuer_account_when_user_signed_by_signing_key()
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{
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// In Go, when a user JWT is signed by an account *signing key* (not the
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// primary account key), the JWT issuer (iss) is the signing key's public key
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// and the issuer_account field carries the primary account public key.
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// This test verifies those two fields are decoded correctly.
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var accountKp = KeyPair.CreatePair(PrefixByte.Account);
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var accountPublicKey = accountKp.GetPublicKey();
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// Simulate a signing key (another account-type keypair acting as delegated signer)
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var signingKp = KeyPair.CreatePair(PrefixByte.Account);
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var signingPublicKey = signingKp.GetPublicKey();
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var payloadJson = $$"""
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{
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"sub":"UAXXX_USER",
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"iss":"{{signingPublicKey}}",
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"iat":1700000000,
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"name":"signing-key-user",
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"nats":{
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"issuer_account":"{{accountPublicKey}}",
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"type":"user",
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"version":2
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}
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}
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""";
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var token = BuildSignedToken(payloadJson, signingKp);
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var claims = NatsJwt.DecodeUserClaims(token);
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claims.ShouldNotBeNull();
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// The issuer is the signing key, not the primary account
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claims.Issuer.ShouldBe(signingPublicKey);
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// The issuer_account carries the primary account key
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claims.IssuerAccount.ShouldBe(accountPublicKey);
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// Convenience property must also reflect the nats sub-object
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claims.Nats.ShouldNotBeNull();
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claims.Nats.IssuerAccount.ShouldBe(accountPublicKey);
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}
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[Fact]
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public void Verify_returns_true_when_signed_by_account_signing_key()
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{
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// JWT is signed by a signing key (not the primary account key).
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// Verify must succeed when checked against the signing key's public key.
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var signingKp = KeyPair.CreatePair(PrefixByte.Account);
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var signingPublicKey = signingKp.GetPublicKey();
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var accountPublicKey = KeyPair.CreatePair(PrefixByte.Account).GetPublicKey();
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var payloadJson = $$"""
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{
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"sub":"UAXXX_USER",
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"iss":"{{signingPublicKey}}",
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"iat":1700000000,
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"nats":{
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"issuer_account":"{{accountPublicKey}}",
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"type":"user",
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"version":2
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}
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}
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""";
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var token = BuildSignedToken(payloadJson, signingKp);
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// Verify against the signing key (not the primary account key)
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NatsJwt.Verify(token, signingPublicKey).ShouldBeTrue();
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// Verify against the primary account key must fail (different key)
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NatsJwt.Verify(token, accountPublicKey).ShouldBeFalse();
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}
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// =====================================================================
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// Account claims — JetStream limits
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// Go reference: TestJWTJetStreamTiers (claims parsing portion)
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// =====================================================================
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[Fact]
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public void DecodeAccountClaims_parses_jetstream_limits()
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{
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var payloadJson = """
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{
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"sub":"AAXXX",
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"iss":"OAXXX",
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"iat":1700000000,
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"nats":{
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"jetstream":{
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"max_streams":10,
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"tier":"T1"
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},
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"type":"account",
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"version":2
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}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeAccountClaims(token);
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claims.ShouldNotBeNull();
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claims.Nats.ShouldNotBeNull();
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claims.Nats.JetStream.ShouldNotBeNull();
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claims.Nats.JetStream.MaxStreams.ShouldBe(10);
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claims.Nats.JetStream.Tier.ShouldBe("T1");
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}
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[Fact]
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public void DecodeAccountClaims_absent_jetstream_block_leaves_property_null()
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{
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var payloadJson = """
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{
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"sub":"AAXXX",
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"iss":"OAXXX",
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"iat":1700000000,
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"nats":{
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"type":"account",
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"version":2
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}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeAccountClaims(token);
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claims.ShouldNotBeNull();
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claims.Nats.ShouldNotBeNull();
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claims.Nats.JetStream.ShouldBeNull();
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}
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// =====================================================================
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// Account claims — tags
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// Go reference: Account claims can carry tags just like user claims
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// =====================================================================
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[Fact]
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public void DecodeAccountClaims_parses_tags()
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{
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var payloadJson = """
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{
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"sub":"AAXXX",
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"iss":"OAXXX",
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"iat":1700000000,
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"nats":{
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"tags":["env:prod","region:us-east"],
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"type":"account",
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"version":2
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}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeAccountClaims(token);
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claims.ShouldNotBeNull();
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claims.Nats.ShouldNotBeNull();
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claims.Nats.Tags.ShouldNotBeNull();
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claims.Nats.Tags.ShouldBe(["env:prod", "region:us-east"]);
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}
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// =====================================================================
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// Malformed JWT structural edge cases
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// Go reference: NatsJwt.Decode robustness
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// =====================================================================
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[Fact]
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public void Decode_returns_null_for_four_dot_separated_parts()
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{
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// JWT must have exactly three parts. Four segments is not a valid JWT.
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NatsJwt.Decode("part1.part2.part3.part4").ShouldBeNull();
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}
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[Fact]
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public void Decode_handles_base64_with_standard_padding_in_payload()
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{
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// Some JWT implementations emit standard Base64 with '=' padding instead of
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// URL-safe base64url. Verify the decoder handles padding characters correctly.
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var payloadJson = """{"sub":"UAXXX","iss":"AAXXX","iat":1700000000}""";
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// Manually build a token where the payload uses standard base64 WITH padding
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var headerB64 = Base64UrlEncode(headerJson);
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var payloadBytes = Encoding.UTF8.GetBytes(payloadJson);
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// Standard base64 with padding (not base64url)
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var payloadB64WithPadding = Convert.ToBase64String(payloadBytes); // may contain '=' padding
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var fakeSig = Convert.ToBase64String(new byte[64]).TrimEnd('=').Replace('+', '-').Replace('/', '_');
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var token = $"{headerB64}.{payloadB64WithPadding}.{fakeSig}";
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// The decoder should handle the padding transparently
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var result = NatsJwt.Decode(token);
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result.ShouldNotBeNull();
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result.PayloadJson.ShouldContain("UAXXX");
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}
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[Fact]
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public void Decode_returns_null_for_empty_header_segment()
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{
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// An empty header part cannot be valid base64 for a JSON object.
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NatsJwt.Decode(".payload.sig").ShouldBeNull();
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}
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[Fact]
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public void Decode_returns_null_for_invalid_base64_in_payload()
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{
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var headerB64 = Base64UrlEncode("""{"typ":"JWT","alg":"ed25519-nkey"}""");
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NatsJwt.Decode($"{headerB64}.!!!invalid.sig").ShouldBeNull();
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}
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[Fact]
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public void Decode_returns_null_for_non_json_payload()
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{
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// A payload that is valid base64url but does not decode to JSON
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// should return null because the header cannot be deserialized.
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var nonJsonPayload = Base64UrlEncode("this-is-not-json");
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var headerB64 = Base64UrlEncode("""{"typ":"JWT","alg":"ed25519-nkey"}""");
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var fakeSig = Convert.ToBase64String(new byte[64]).TrimEnd('=').Replace('+', '-').Replace('/', '_');
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// Decode does not deserialize the payload (only the header), so this
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// actually succeeds at the Decode level but the payloadJson is "this-is-not-json".
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// DecodeUserClaims should return null because the payload is not valid claims JSON.
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var token = $"{headerB64}.{nonJsonPayload}.{fakeSig}";
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var decoded = NatsJwt.Decode(token);
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decoded.ShouldNotBeNull();
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decoded.PayloadJson.ShouldBe("this-is-not-json");
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// But decoding as UserClaims should fail
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NatsJwt.DecodeUserClaims(token).ShouldBeNull();
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}
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// =====================================================================
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// Verify edge cases
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// =====================================================================
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[Fact]
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public void Verify_returns_false_for_empty_public_key()
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{
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var kp = KeyPair.CreatePair(PrefixByte.Account);
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var payloadJson = """{"sub":"UAXXX","iss":"AAXXX","iat":1700000000}""";
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var token = BuildSignedToken(payloadJson, kp);
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NatsJwt.Verify(token, "").ShouldBeFalse();
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}
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[Fact]
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public void Verify_returns_false_for_malformed_public_key()
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{
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var kp = KeyPair.CreatePair(PrefixByte.Account);
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var payloadJson = """{"sub":"UAXXX","iss":"AAXXX","iat":1700000000}""";
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var token = BuildSignedToken(payloadJson, kp);
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NatsJwt.Verify(token, "NOT_A_VALID_NKEY").ShouldBeFalse();
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}
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[Fact]
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public void Verify_returns_false_when_signature_is_truncated()
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{
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var kp = KeyPair.CreatePair(PrefixByte.Account);
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var accountPublicKey = kp.GetPublicKey();
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var payloadJson = $$"""{"sub":"UAXXX","iss":"{{accountPublicKey}}","iat":1700000000}""";
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var token = BuildSignedToken(payloadJson, kp);
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// Truncate the signature part to only 10 chars — invalid length
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var parts = token.Split('.');
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var truncatedToken = $"{parts[0]}.{parts[1]}.{parts[2][..10]}";
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NatsJwt.Verify(truncatedToken, accountPublicKey).ShouldBeFalse();
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}
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// =====================================================================
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// DecodeUserClaims — sub-permission variations
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// Go reference: TestJWTUserPermissionClaims
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// =====================================================================
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[Fact]
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public void DecodeUserClaims_parses_pub_allow_only_with_no_deny()
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{
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// Permissions with only allow and no deny list.
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
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var payloadJson = """
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{
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"sub":"UAXXX",
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"iss":"AAXXX",
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"iat":1700000000,
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"nats":{
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"pub":{"allow":["foo.>","bar.*"]},
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"type":"user",
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"version":2
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}
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}
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""";
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var token = BuildUnsignedToken(headerJson, payloadJson);
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var claims = NatsJwt.DecodeUserClaims(token);
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claims.ShouldNotBeNull();
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claims.Nats.ShouldNotBeNull();
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claims.Nats.Pub.ShouldNotBeNull();
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claims.Nats.Pub.Allow.ShouldBe(["foo.>", "bar.*"]);
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claims.Nats.Pub.Deny.ShouldBeNull();
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claims.Nats.Sub.ShouldBeNull();
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}
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[Fact]
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public void DecodeUserClaims_parses_sub_deny_only_with_no_allow()
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{
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// Permissions with only deny and no allow list.
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var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
|
||||
var payloadJson = """
|
||||
{
|
||||
"sub":"UAXXX",
|
||||
"iss":"AAXXX",
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||||
"iat":1700000000,
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"nats":{
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"sub":{"deny":["private.>"]},
|
||||
"type":"user",
|
||||
"version":2
|
||||
}
|
||||
}
|
||||
""";
|
||||
var token = BuildUnsignedToken(headerJson, payloadJson);
|
||||
|
||||
var claims = NatsJwt.DecodeUserClaims(token);
|
||||
|
||||
claims.ShouldNotBeNull();
|
||||
claims.Nats.ShouldNotBeNull();
|
||||
claims.Nats.Pub.ShouldBeNull();
|
||||
claims.Nats.Sub.ShouldNotBeNull();
|
||||
claims.Nats.Sub.Allow.ShouldBeNull();
|
||||
claims.Nats.Sub.Deny.ShouldBe(["private.>"]);
|
||||
}
|
||||
|
||||
// =====================================================================
|
||||
// DecodeAccountClaims — revocation-only and limits-only splits
|
||||
// Go reference: TestJWTUserRevoked, TestJWTAccountLimitsSubs
|
||||
// =====================================================================
|
||||
|
||||
[Fact]
|
||||
public void DecodeAccountClaims_parses_revocations_without_limits()
|
||||
{
|
||||
// Account JWT with only revocations defined (no limits block).
|
||||
var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
|
||||
var payloadJson = """
|
||||
{
|
||||
"sub":"AAXXX",
|
||||
"iss":"OAXXX",
|
||||
"iat":1700000000,
|
||||
"nats":{
|
||||
"revocations":{
|
||||
"UAXXX_REVOKED":1699000000
|
||||
},
|
||||
"type":"account",
|
||||
"version":2
|
||||
}
|
||||
}
|
||||
""";
|
||||
var token = BuildUnsignedToken(headerJson, payloadJson);
|
||||
|
||||
var claims = NatsJwt.DecodeAccountClaims(token);
|
||||
|
||||
claims.ShouldNotBeNull();
|
||||
claims.Nats.ShouldNotBeNull();
|
||||
claims.Nats.Limits.ShouldBeNull();
|
||||
claims.Nats.Revocations.ShouldNotBeNull();
|
||||
claims.Nats.Revocations.Count.ShouldBe(1);
|
||||
claims.Nats.Revocations["UAXXX_REVOKED"].ShouldBe(1699000000);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void DecodeAccountClaims_parses_limits_without_revocations()
|
||||
{
|
||||
// Account JWT with only limits defined (no revocations block).
|
||||
var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
|
||||
var payloadJson = """
|
||||
{
|
||||
"sub":"AAXXX",
|
||||
"iss":"OAXXX",
|
||||
"iat":1700000000,
|
||||
"nats":{
|
||||
"limits":{
|
||||
"conn":50,
|
||||
"subs":500
|
||||
},
|
||||
"type":"account",
|
||||
"version":2
|
||||
}
|
||||
}
|
||||
""";
|
||||
var token = BuildUnsignedToken(headerJson, payloadJson);
|
||||
|
||||
var claims = NatsJwt.DecodeAccountClaims(token);
|
||||
|
||||
claims.ShouldNotBeNull();
|
||||
claims.Nats.ShouldNotBeNull();
|
||||
claims.Nats.Revocations.ShouldBeNull();
|
||||
claims.Nats.Limits.ShouldNotBeNull();
|
||||
claims.Nats.Limits.MaxConnections.ShouldBe(50);
|
||||
claims.Nats.Limits.MaxSubscriptions.ShouldBe(500);
|
||||
}
|
||||
|
||||
// =====================================================================
|
||||
// Wildcard revocation sentinel value
|
||||
// Go reference: TestJWTUserRevocation — "*" key with timestamp=0 means
|
||||
// all users issued before that time are revoked
|
||||
// =====================================================================
|
||||
|
||||
[Fact]
|
||||
public void DecodeAccountClaims_parses_wildcard_revocation_sentinel()
|
||||
{
|
||||
// The Go JWT library uses "*" as a key in the revocations map
|
||||
// to mean "revoke all users issued before this timestamp".
|
||||
var headerJson = """{"typ":"JWT","alg":"ed25519-nkey"}""";
|
||||
var payloadJson = """
|
||||
{
|
||||
"sub":"AAXXX",
|
||||
"iss":"OAXXX",
|
||||
"iat":1700000000,
|
||||
"nats":{
|
||||
"revocations":{
|
||||
"*":1699000000,
|
||||
"UAXXX_SPECIFIC":1700000000
|
||||
},
|
||||
"type":"account",
|
||||
"version":2
|
||||
}
|
||||
}
|
||||
""";
|
||||
var token = BuildUnsignedToken(headerJson, payloadJson);
|
||||
|
||||
var claims = NatsJwt.DecodeAccountClaims(token);
|
||||
|
||||
claims.ShouldNotBeNull();
|
||||
claims.Nats.ShouldNotBeNull();
|
||||
claims.Nats.Revocations.ShouldNotBeNull();
|
||||
claims.Nats.Revocations.Count.ShouldBe(2);
|
||||
claims.Nats.Revocations.ContainsKey("*").ShouldBeTrue();
|
||||
claims.Nats.Revocations["*"].ShouldBe(1699000000);
|
||||
claims.Nats.Revocations["UAXXX_SPECIFIC"].ShouldBe(1700000000);
|
||||
}
|
||||
|
||||
// =====================================================================
|
||||
// VerifyNonce edge cases
|
||||
// Go reference: nonce verification with user keypair
|
||||
// =====================================================================
|
||||
|
||||
[Fact]
|
||||
public void VerifyNonce_returns_false_for_empty_nonce_with_wrong_sig()
|
||||
{
|
||||
var kp = KeyPair.CreatePair(PrefixByte.User);
|
||||
var publicKey = kp.GetPublicKey();
|
||||
// Sign a non-empty nonce but verify against empty nonce
|
||||
var nonce = "real-nonce"u8.ToArray();
|
||||
var sig = new byte[64];
|
||||
kp.Sign(nonce, sig);
|
||||
var sigB64 = Convert.ToBase64String(sig);
|
||||
|
||||
NatsJwt.VerifyNonce([], sigB64, publicKey).ShouldBeFalse();
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void VerifyNonce_returns_false_for_zero_length_base64_payload()
|
||||
{
|
||||
var kp = KeyPair.CreatePair(PrefixByte.User);
|
||||
var publicKey = kp.GetPublicKey();
|
||||
var nonce = "some-nonce"u8.ToArray();
|
||||
|
||||
// An empty string is not valid base64 for a 64-byte signature
|
||||
NatsJwt.VerifyNonce(nonce, "", publicKey).ShouldBeFalse();
|
||||
}
|
||||
|
||||
// =====================================================================
|
||||
// Roundtrip — operator-signed account, account-signed user (full chain)
|
||||
// Go reference: TestJWTUser — full three-tier trust chain
|
||||
// =====================================================================
|
||||
|
||||
[Fact]
|
||||
public void Roundtrip_three_tier_claims_operator_account_user()
|
||||
{
|
||||
// Mimics the Go three-tier trust hierarchy:
|
||||
// Operator -> signs Account JWT -> signs User JWT
|
||||
// This test validates that all three levels decode correctly and
|
||||
// the signing key chain fields are properly populated.
|
||||
var operatorKp = KeyPair.CreatePair(PrefixByte.Operator);
|
||||
var operatorPublicKey = operatorKp.GetPublicKey();
|
||||
|
||||
var accountKp = KeyPair.CreatePair(PrefixByte.Account);
|
||||
var accountPublicKey = accountKp.GetPublicKey();
|
||||
|
||||
// Account JWT: issued by operator
|
||||
var accountPayload = $$"""
|
||||
{
|
||||
"sub":"{{accountPublicKey}}",
|
||||
"iss":"{{operatorPublicKey}}",
|
||||
"iat":1700000000,
|
||||
"name":"test-account",
|
||||
"nats":{
|
||||
"limits":{"conn":100,"subs":-1,"payload":-1,"data":-1},
|
||||
"type":"account",
|
||||
"version":2
|
||||
}
|
||||
}
|
||||
""";
|
||||
var accountToken = BuildSignedToken(accountPayload, operatorKp);
|
||||
|
||||
// User JWT: issued by account key
|
||||
var userPublicKey = KeyPair.CreatePair(PrefixByte.User).GetPublicKey();
|
||||
var userPayload = $$"""
|
||||
{
|
||||
"sub":"{{userPublicKey}}",
|
||||
"iss":"{{accountPublicKey}}",
|
||||
"iat":1700000000,
|
||||
"name":"test-user",
|
||||
"nats":{
|
||||
"pub":{"allow":[">"]},
|
||||
"sub":{"allow":[">"]},
|
||||
"type":"user",
|
||||
"version":2
|
||||
}
|
||||
}
|
||||
""";
|
||||
var userToken = BuildSignedToken(userPayload, accountKp);
|
||||
|
||||
// Account JWT: verify and decode
|
||||
NatsJwt.Verify(accountToken, operatorPublicKey).ShouldBeTrue();
|
||||
var accountClaims = NatsJwt.DecodeAccountClaims(accountToken);
|
||||
accountClaims.ShouldNotBeNull();
|
||||
accountClaims.Subject.ShouldBe(accountPublicKey);
|
||||
accountClaims.Issuer.ShouldBe(operatorPublicKey);
|
||||
accountClaims.Name.ShouldBe("test-account");
|
||||
accountClaims.Nats.ShouldNotBeNull();
|
||||
accountClaims.Nats.Limits.ShouldNotBeNull();
|
||||
accountClaims.Nats.Limits.MaxConnections.ShouldBe(100);
|
||||
|
||||
// User JWT: verify and decode
|
||||
NatsJwt.Verify(userToken, accountPublicKey).ShouldBeTrue();
|
||||
var userClaims = NatsJwt.DecodeUserClaims(userToken);
|
||||
userClaims.ShouldNotBeNull();
|
||||
userClaims.Subject.ShouldBe(userPublicKey);
|
||||
userClaims.Issuer.ShouldBe(accountPublicKey);
|
||||
userClaims.Name.ShouldBe("test-user");
|
||||
userClaims.Nats.ShouldNotBeNull();
|
||||
userClaims.Nats.Pub.ShouldNotBeNull();
|
||||
userClaims.Nats.Pub.Allow.ShouldBe([">"]);
|
||||
}
|
||||
}
|
||||
|
||||
468
tests/NATS.Server.Tests/Mqtt/MqttPacketParsingParityTests.cs
Normal file
468
tests/NATS.Server.Tests/Mqtt/MqttPacketParsingParityTests.cs
Normal file
@@ -0,0 +1,468 @@
|
||||
// Ported from golang/nats-server/server/mqtt_test.go — TestMQTTReader, TestMQTTWriter, and
|
||||
// packet-level scenarios exercised inline throughout the Go test suite.
|
||||
// Go reference: server/mqtt.go constants mqttPacketConnect=0x10, mqttPacketPub=0x30,
|
||||
// mqttPacketSub=0x80, mqttPacketUnsub=0xa0, mqttPacketPing=0xc0, mqttPacketDisconnect=0xe0.
|
||||
|
||||
using NATS.Server.Mqtt;
|
||||
|
||||
namespace NATS.Server.Tests.Mqtt;
|
||||
|
||||
public class MqttPacketParsingParityTests
|
||||
{
|
||||
// -------------------------------------------------------------------------
|
||||
// 1. CONNECT packet parsing
|
||||
// -------------------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public void Connect_packet_type_is_parsed_from_first_nibble()
|
||||
{
|
||||
// Fixed header 0x10 = type 1 (Connect), flags 0.
|
||||
// Variable header: protocol name "MQTT" (4 bytes + 2-byte length prefix),
|
||||
// protocol level 0x04, connect flags 0x02 (clean session), keepalive 0x00 0x3C (60s).
|
||||
// Payload: 2-byte length-prefixed empty client-id.
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0x10, 0x0C, // CONNECT, remaining length 12
|
||||
0x00, 0x04, (byte)'M', (byte)'Q', (byte)'T', (byte)'T',
|
||||
0x04, 0x02, 0x00, 0x3C, // protocol level 4, clean-session flag, keepalive 60
|
||||
0x00, 0x00, // empty client-id
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
|
||||
packet.Type.ShouldBe(MqttControlPacketType.Connect);
|
||||
packet.Flags.ShouldBe((byte)0x00);
|
||||
packet.RemainingLength.ShouldBe(12);
|
||||
packet.Payload.Length.ShouldBe(12);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Connect_packet_payload_contains_protocol_name_and_flags()
|
||||
{
|
||||
// The variable-header for a CONNECT begins with a 2-byte-length-prefixed protocol
|
||||
// name ("MQTT"), then protocol level (4), then connect-flags byte.
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0x10, 0x0C,
|
||||
0x00, 0x04, (byte)'M', (byte)'Q', (byte)'T', (byte)'T',
|
||||
0x04, 0x02, 0x00, 0x3C,
|
||||
0x00, 0x00,
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
var payload = packet.Payload.Span;
|
||||
|
||||
// Bytes 0-5: 0x00 0x04 'M' 'Q' 'T' 'T'
|
||||
payload[0].ShouldBe((byte)0x00);
|
||||
payload[1].ShouldBe((byte)0x04);
|
||||
payload[2].ShouldBe((byte)'M');
|
||||
payload[3].ShouldBe((byte)'Q');
|
||||
payload[4].ShouldBe((byte)'T');
|
||||
payload[5].ShouldBe((byte)'T');
|
||||
// Byte 6: protocol level 4
|
||||
payload[6].ShouldBe((byte)0x04);
|
||||
// Byte 7: connect flags — 0x02 = clean-session
|
||||
payload[7].ShouldBe((byte)0x02);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Connect_keepalive_bytes_are_present_in_payload()
|
||||
{
|
||||
// Keepalive is a big-endian uint16 at bytes 8-9 of the variable header.
|
||||
// Here 0x00 0x3C = 60 seconds.
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0x10, 0x0C,
|
||||
0x00, 0x04, (byte)'M', (byte)'Q', (byte)'T', (byte)'T',
|
||||
0x04, 0x02, 0x00, 0x3C,
|
||||
0x00, 0x00,
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
var payload = packet.Payload.Span;
|
||||
|
||||
var keepalive = (payload[8] << 8) | payload[9];
|
||||
keepalive.ShouldBe(60);
|
||||
}
|
||||
|
||||
// -------------------------------------------------------------------------
|
||||
// 2. PUBLISH packet parsing — QoS 0 and QoS 1
|
||||
// -------------------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public void Publish_qos0_packet_fixed_header_byte_is_0x30()
|
||||
{
|
||||
// PUBLISH with QoS=0, DUP=0, RETAIN=0 → fixed header high nibble 0x3, flags nibble 0x0.
|
||||
// Topic "a/b" (length 3, encoded as 0x00 0x03 'a' '/' 'b') + payload "hello".
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0x30, 0x0A, // PUBLISH QoS 0, remaining length 10
|
||||
0x00, 0x03, (byte)'a', (byte)'/', (byte)'b', // topic "a/b"
|
||||
(byte)'h', (byte)'e', (byte)'l', (byte)'l', (byte)'o', // payload "hello"
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
|
||||
packet.Type.ShouldBe(MqttControlPacketType.Publish);
|
||||
packet.Flags.ShouldBe((byte)0x00);
|
||||
packet.RemainingLength.ShouldBe(10);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Publish_qos1_flags_nibble_is_0x02()
|
||||
{
|
||||
// PUBLISH with QoS=1 → flags nibble 0x2. Packet identifier (2 bytes) follows topic.
|
||||
// Topic "t" (0x00 0x01 't') + packet-id 0x00 0x01 + payload "data".
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0x32, 0x09, // PUBLISH QoS 1 (flags=0x02), remaining length 9
|
||||
0x00, 0x01, (byte)'t', // topic "t"
|
||||
0x00, 0x01, // packet identifier 1
|
||||
(byte)'d', (byte)'a', (byte)'t', (byte)'a', // payload "data"
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
|
||||
packet.Type.ShouldBe(MqttControlPacketType.Publish);
|
||||
// QoS 1 is encoded in bits 2-1 of the flags nibble: 0x02
|
||||
packet.Flags.ShouldBe((byte)0x02);
|
||||
packet.RemainingLength.ShouldBe(9);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Publish_payload_starts_after_topic_length_prefix()
|
||||
{
|
||||
// Topic "ab" length-prefix 0x00 0x02, payload bytes follow remaining-length boundary.
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0x30, 0x07,
|
||||
0x00, 0x02, (byte)'a', (byte)'b',
|
||||
(byte)'x', (byte)'y', (byte)'z',
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
var payload = packet.Payload.Span;
|
||||
|
||||
// payload[0..1] = topic length, [2..3] = "ab", [4..6] = "xyz"
|
||||
payload.Length.ShouldBe(7);
|
||||
payload[4].ShouldBe((byte)'x');
|
||||
payload[5].ShouldBe((byte)'y');
|
||||
payload[6].ShouldBe((byte)'z');
|
||||
}
|
||||
|
||||
// -------------------------------------------------------------------------
|
||||
// 3. SUBSCRIBE packet parsing
|
||||
// -------------------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public void Subscribe_packet_type_is_parsed_correctly()
|
||||
{
|
||||
// SUBSCRIBE fixed header = 0x82 (type 0x80 | flags 0x02 — required by MQTT spec).
|
||||
// Variable header: packet-id 0x00 0x01.
|
||||
// Payload: topic filter "test/#" with QoS 0.
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0x82, 0x0B, // SUBSCRIBE, remaining length 11
|
||||
0x00, 0x01, // packet identifier 1
|
||||
0x00, 0x06, // topic filter length 6
|
||||
(byte)'t', (byte)'e', (byte)'s', (byte)'t', (byte)'/', (byte)'#',
|
||||
0x00, // requested QoS 0
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
|
||||
packet.Type.ShouldBe(MqttControlPacketType.Subscribe);
|
||||
packet.Flags.ShouldBe((byte)0x02);
|
||||
packet.RemainingLength.ShouldBe(11);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Subscribe_payload_contains_packet_id_and_topic_filter()
|
||||
{
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0x82, 0x0B,
|
||||
0x00, 0x01,
|
||||
0x00, 0x06,
|
||||
(byte)'t', (byte)'e', (byte)'s', (byte)'t', (byte)'/', (byte)'#',
|
||||
0x00,
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
var payload = packet.Payload.Span;
|
||||
|
||||
// Packet identifier at bytes 0-1
|
||||
var packetId = (payload[0] << 8) | payload[1];
|
||||
packetId.ShouldBe(1);
|
||||
|
||||
// Topic filter length at bytes 2-3
|
||||
var filterLen = (payload[2] << 8) | payload[3];
|
||||
filterLen.ShouldBe(6);
|
||||
|
||||
// Topic filter characters
|
||||
payload[4].ShouldBe((byte)'t');
|
||||
payload[9].ShouldBe((byte)'#');
|
||||
|
||||
// QoS byte at the end
|
||||
payload[10].ShouldBe((byte)0x00);
|
||||
}
|
||||
|
||||
// -------------------------------------------------------------------------
|
||||
// 4. UNSUBSCRIBE and DISCONNECT parsing
|
||||
// -------------------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public void Unsubscribe_packet_type_is_parsed_correctly()
|
||||
{
|
||||
// UNSUBSCRIBE fixed header = 0xA2 (type 0xA0 | flags 0x02).
|
||||
// Variable header: packet-id 0x00 0x02.
|
||||
// Payload: topic filter "sensors/+" (length 9).
|
||||
ReadOnlySpan<byte> bytes =
|
||||
[
|
||||
0xA2, 0x0D,
|
||||
0x00, 0x02,
|
||||
0x00, 0x09,
|
||||
(byte)'s', (byte)'e', (byte)'n', (byte)'s', (byte)'o', (byte)'r', (byte)'s', (byte)'/', (byte)'+',
|
||||
];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
|
||||
// 0xA0 >> 4 = 10, which is not in the MqttControlPacketType enum — the reader
|
||||
// returns whatever type byte is encoded; cast to byte for verification.
|
||||
((byte)packet.Type).ShouldBe((byte)10);
|
||||
packet.Flags.ShouldBe((byte)0x02);
|
||||
packet.RemainingLength.ShouldBe(13);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Disconnect_packet_is_two_bytes_with_zero_remaining_length()
|
||||
{
|
||||
// DISCONNECT fixed header = 0xE0, remaining length = 0x00.
|
||||
// Total wire size: exactly 2 bytes (Go: mqttPacketDisconnect = 0xe0).
|
||||
ReadOnlySpan<byte> bytes = [0xE0, 0x00];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
|
||||
((byte)packet.Type).ShouldBe((byte)14); // MqttControlPacketType.Disconnect = 14
|
||||
packet.Type.ShouldBe(MqttControlPacketType.Disconnect);
|
||||
packet.Flags.ShouldBe((byte)0x00);
|
||||
packet.RemainingLength.ShouldBe(0);
|
||||
packet.Payload.Length.ShouldBe(0);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Pingreq_packet_is_two_bytes_with_zero_remaining_length()
|
||||
{
|
||||
// PINGREQ fixed header = 0xC0, remaining length = 0x00.
|
||||
// Go: mqttPacketPing = 0xc0.
|
||||
ReadOnlySpan<byte> bytes = [0xC0, 0x00];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
|
||||
packet.Type.ShouldBe(MqttControlPacketType.PingReq);
|
||||
packet.Flags.ShouldBe((byte)0x00);
|
||||
packet.RemainingLength.ShouldBe(0);
|
||||
packet.Payload.Length.ShouldBe(0);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Pingresp_packet_is_two_bytes_with_zero_remaining_length()
|
||||
{
|
||||
// PINGRESP fixed header = 0xD0, remaining length = 0x00.
|
||||
// Go: mqttPacketPingResp = 0xd0.
|
||||
ReadOnlySpan<byte> bytes = [0xD0, 0x00];
|
||||
|
||||
var packet = MqttPacketReader.Read(bytes);
|
||||
|
||||
packet.Type.ShouldBe(MqttControlPacketType.PingResp);
|
||||
packet.RemainingLength.ShouldBe(0);
|
||||
}
|
||||
|
||||
// -------------------------------------------------------------------------
|
||||
// 5. Remaining length encoding edge cases (Go TestMQTTWriter VarInt table)
|
||||
// -------------------------------------------------------------------------
|
||||
// Go test: ints = {0,1,127,128,16383,16384,2097151,2097152,268435455}
|
||||
// lens = {1,1,1, 2, 2, 3, 3, 4, 4}
|
||||
|
||||
[Theory]
|
||||
[InlineData(0, 1, new byte[] { 0x00 })]
|
||||
[InlineData(1, 1, new byte[] { 0x01 })]
|
||||
[InlineData(127, 1, new byte[] { 0x7F })]
|
||||
[InlineData(128, 2, new byte[] { 0x80, 0x01 })]
|
||||
[InlineData(16383, 2, new byte[] { 0xFF, 0x7F })]
|
||||
[InlineData(16384, 3, new byte[] { 0x80, 0x80, 0x01 })]
|
||||
[InlineData(2097151, 3, new byte[] { 0xFF, 0xFF, 0x7F })]
|
||||
[InlineData(2097152, 4, new byte[] { 0x80, 0x80, 0x80, 0x01 })]
|
||||
[InlineData(268435455, 4, new byte[] { 0xFF, 0xFF, 0xFF, 0x7F })]
|
||||
public void Remaining_length_encodes_to_correct_byte_count_and_bytes(
|
||||
int value, int expectedByteCount, byte[] expectedBytes)
|
||||
{
|
||||
var encoded = MqttPacketWriter.EncodeRemainingLength(value);
|
||||
|
||||
encoded.Length.ShouldBe(expectedByteCount);
|
||||
encoded.ShouldBe(expectedBytes);
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(new byte[] { 0x00 }, 0)]
|
||||
[InlineData(new byte[] { 0x01 }, 1)]
|
||||
[InlineData(new byte[] { 0x7F }, 127)]
|
||||
[InlineData(new byte[] { 0x80, 0x01 }, 128)]
|
||||
[InlineData(new byte[] { 0xFF, 0x7F }, 16383)]
|
||||
[InlineData(new byte[] { 0x80, 0x80, 0x01 }, 16384)]
|
||||
[InlineData(new byte[] { 0xFF, 0xFF, 0x7F }, 2097151)]
|
||||
[InlineData(new byte[] { 0x80, 0x80, 0x80, 0x01 }, 2097152)]
|
||||
[InlineData(new byte[] { 0xFF, 0xFF, 0xFF, 0x7F }, 268435455)]
|
||||
public void Remaining_length_decodes_from_correct_byte_sequences(byte[] encoded, int expectedValue)
|
||||
{
|
||||
var decoded = MqttPacketReader.DecodeRemainingLength(encoded, out var consumed);
|
||||
|
||||
decoded.ShouldBe(expectedValue);
|
||||
consumed.ShouldBe(encoded.Length);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Remaining_length_two_byte_encoding_round_trips_through_reader()
|
||||
{
|
||||
// Go TestMQTTReader: r.reset([]byte{0x82, 0xff, 0x3}); expects l == 0xff82
|
||||
// 0x82 0xFF 0x03 → value = (0x02) + (0x7F * 128) + (0x03 * 16384)
|
||||
// = 2 + 16256 + 49152 = 65410 = 0xFF82
|
||||
ReadOnlySpan<byte> encoded = [0x82, 0xFF, 0x03];
|
||||
|
||||
var value = MqttPacketReader.DecodeRemainingLength(encoded, out var consumed);
|
||||
|
||||
value.ShouldBe(0xFF82);
|
||||
consumed.ShouldBe(3);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Writer_round_trips_remaining_length_through_reader_for_all_boundary_values()
|
||||
{
|
||||
// Mirrors the Go TestMQTTWriter loop: encode then decode each boundary value.
|
||||
int[] values = [0, 1, 127, 128, 16383, 16384, 2097151, 2097152, 268435455];
|
||||
|
||||
foreach (var v in values)
|
||||
{
|
||||
var encoded = MqttPacketWriter.EncodeRemainingLength(v);
|
||||
var decoded = MqttPacketReader.DecodeRemainingLength(encoded, out _);
|
||||
decoded.ShouldBe(v, $"Round-trip failed for value {v}");
|
||||
}
|
||||
}
|
||||
|
||||
// -------------------------------------------------------------------------
|
||||
// 6. Invalid packet handling
|
||||
// -------------------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public void Read_throws_on_buffer_shorter_than_two_bytes()
|
||||
{
|
||||
// Any MQTT packet must have at least 2 bytes (fixed header + remaining length byte).
|
||||
// Use byte[] so the array can be captured inside the Should.Throw lambda.
|
||||
byte[] tooShort = [0x10];
|
||||
|
||||
var ex = Should.Throw<FormatException>(() => MqttPacketReader.Read(tooShort));
|
||||
ex.Message.ShouldContain("shorter than fixed header");
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Read_throws_on_empty_buffer()
|
||||
{
|
||||
byte[] empty = [];
|
||||
|
||||
Should.Throw<FormatException>(() => MqttPacketReader.Read(empty));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Read_throws_when_remaining_length_exceeds_buffer()
|
||||
{
|
||||
// Fixed header says remaining length = 10, but only 2 extra bytes are provided.
|
||||
byte[] truncated = [0x30, 0x0A, 0x00, 0x02];
|
||||
|
||||
Should.Throw<FormatException>(() => MqttPacketReader.Read(truncated));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Read_throws_on_malformed_five_byte_varint_remaining_length()
|
||||
{
|
||||
// Go TestMQTTReader: r.reset([]byte{0xff, 0xff, 0xff, 0xff, 0xff}); expects "malformed" error.
|
||||
// Five continuation bytes with no terminator — the MQTT spec caps remaining-length at 4 bytes.
|
||||
// We embed this after a valid type byte to exercise the length-decode path.
|
||||
byte[] malformed = [0x30, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF];
|
||||
|
||||
Should.Throw<FormatException>(() => MqttPacketReader.Read(malformed));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Remaining_length_encoder_throws_on_negative_value()
|
||||
{
|
||||
Should.Throw<ArgumentOutOfRangeException>(
|
||||
() => MqttPacketWriter.EncodeRemainingLength(-1));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Remaining_length_encoder_throws_on_value_exceeding_maximum()
|
||||
{
|
||||
// Maximum MQTT remaining length is 268435455 (0x0FFFFFFF).
|
||||
Should.Throw<ArgumentOutOfRangeException>(
|
||||
() => MqttPacketWriter.EncodeRemainingLength(268_435_456));
|
||||
}
|
||||
|
||||
// -------------------------------------------------------------------------
|
||||
// 7. Round-trip: writer → reader
|
||||
// -------------------------------------------------------------------------
|
||||
|
||||
[Fact]
|
||||
public void Puback_packet_round_trips_through_writer_and_reader()
|
||||
{
|
||||
// PUBACK carries a 2-byte packet identifier in its payload (remaining length = 2).
|
||||
ReadOnlySpan<byte> piPayload = [0x00, 0x07]; // packet-id = 7
|
||||
|
||||
var encoded = MqttPacketWriter.Write(MqttControlPacketType.PubAck, piPayload);
|
||||
var decoded = MqttPacketReader.Read(encoded);
|
||||
|
||||
decoded.Type.ShouldBe(MqttControlPacketType.PubAck);
|
||||
decoded.RemainingLength.ShouldBe(2);
|
||||
decoded.Payload.Span[0].ShouldBe((byte)0x00);
|
||||
decoded.Payload.Span[1].ShouldBe((byte)0x07);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Subscribe_packet_round_trips_with_flags_preserved()
|
||||
{
|
||||
// SUBSCRIBE requires flags = 0x02 per the MQTT 3.1.1 spec.
|
||||
ReadOnlySpan<byte> subPayload =
|
||||
[
|
||||
0x00, 0x05, // packet-id 5
|
||||
0x00, 0x03, (byte)'a', (byte)'/', (byte)'b', // topic "a/b"
|
||||
0x01, // QoS 1
|
||||
];
|
||||
|
||||
var encoded = MqttPacketWriter.Write(MqttControlPacketType.Subscribe, subPayload, flags: 0x02);
|
||||
var decoded = MqttPacketReader.Read(encoded);
|
||||
|
||||
decoded.Type.ShouldBe(MqttControlPacketType.Subscribe);
|
||||
decoded.Flags.ShouldBe((byte)0x02);
|
||||
decoded.RemainingLength.ShouldBe(subPayload.Length);
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void Large_publish_payload_remaining_length_encodes_to_two_bytes()
|
||||
{
|
||||
// A 130-byte payload requires a 2-byte remaining-length encoding
|
||||
// (128 = 0x80 0x01; anything ≥ 128 crosses the 1-byte boundary).
|
||||
var payload = new byte[130];
|
||||
payload.AsSpan().Fill(0xAB);
|
||||
|
||||
var encoded = MqttPacketWriter.Write(MqttControlPacketType.Publish, payload);
|
||||
|
||||
// Byte 0: fixed header 0x30 (PUBLISH, QoS 0)
|
||||
encoded[0].ShouldBe((byte)0x30);
|
||||
// Bytes 1-2: remaining length 130 encoded as 0x82 0x01
|
||||
encoded[1].ShouldBe((byte)0x82);
|
||||
encoded[2].ShouldBe((byte)0x01);
|
||||
|
||||
var decoded = MqttPacketReader.Read(encoded);
|
||||
decoded.RemainingLength.ShouldBe(130);
|
||||
decoded.Payload.Length.ShouldBe(130);
|
||||
}
|
||||
}
|
||||
172
tests/NATS.Server.Tests/Mqtt/MqttQosDeliveryParityTests.cs
Normal file
172
tests/NATS.Server.Tests/Mqtt/MqttQosDeliveryParityTests.cs
Normal file
@@ -0,0 +1,172 @@
|
||||
// Ports QoS delivery behavior from Go reference:
|
||||
// golang/nats-server/server/mqtt_test.go — TestMQTTPublish, TestMQTTSubQoS1, TestMQTTParsePub
|
||||
|
||||
using System.Net;
|
||||
using System.Net.Sockets;
|
||||
using System.Text;
|
||||
using NATS.Server.Mqtt;
|
||||
|
||||
namespace NATS.Server.Tests.Mqtt;
|
||||
|
||||
public class MqttQosDeliveryParityTests
|
||||
{
|
||||
// Go ref: TestMQTTPublish — QoS 0 is fire-and-forget; publisher sends PUB and receives no PUBACK.
|
||||
[Fact]
|
||||
public async Task Qos0_publish_is_fire_and_forget_no_puback_returned()
|
||||
{
|
||||
await using var listener = new MqttListener("127.0.0.1", 0);
|
||||
using var cts = new CancellationTokenSource();
|
||||
await listener.StartAsync(cts.Token);
|
||||
|
||||
using var client = new TcpClient();
|
||||
await client.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var stream = client.GetStream();
|
||||
|
||||
await MqttQosWire.WriteLineAsync(stream, "CONNECT qos0-client clean=false");
|
||||
(await MqttQosWire.ReadLineAsync(stream, 1000)).ShouldBe("CONNACK");
|
||||
|
||||
// PUB is QoS 0 — no PUBACK should come back
|
||||
await MqttQosWire.WriteLineAsync(stream, "PUB sensors.temp 25");
|
||||
|
||||
// Server must not send anything back for QoS 0
|
||||
(await MqttQosWire.ReadRawAsync(stream, 200)).ShouldBe("__timeout__");
|
||||
}
|
||||
|
||||
// Go ref: TestMQTTSubQoS1 — QoS 1 publisher receives PUBACK; subscriber on matching topic receives MSG.
|
||||
[Fact]
|
||||
public async Task Qos1_publish_with_subscriber_delivers_message_to_subscriber()
|
||||
{
|
||||
await using var listener = new MqttListener("127.0.0.1", 0);
|
||||
using var cts = new CancellationTokenSource();
|
||||
await listener.StartAsync(cts.Token);
|
||||
|
||||
// Set up subscriber first
|
||||
using var sub = new TcpClient();
|
||||
await sub.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var subStream = sub.GetStream();
|
||||
await MqttQosWire.WriteLineAsync(subStream, "CONNECT sub-client clean=false");
|
||||
(await MqttQosWire.ReadLineAsync(subStream, 1000)).ShouldBe("CONNACK");
|
||||
await MqttQosWire.WriteLineAsync(subStream, "SUB sensors.temp");
|
||||
var subAck = await MqttQosWire.ReadLineAsync(subStream, 1000);
|
||||
subAck.ShouldNotBeNull();
|
||||
subAck.ShouldContain("SUBACK");
|
||||
|
||||
// Publisher sends QoS 1
|
||||
using var pub = new TcpClient();
|
||||
await pub.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var pubStream = pub.GetStream();
|
||||
await MqttQosWire.WriteLineAsync(pubStream, "CONNECT pub-client clean=false");
|
||||
(await MqttQosWire.ReadLineAsync(pubStream, 1000)).ShouldBe("CONNACK");
|
||||
|
||||
await MqttQosWire.WriteLineAsync(pubStream, "PUBQ1 3 sensors.temp 72");
|
||||
|
||||
// Publisher receives PUBACK
|
||||
(await MqttQosWire.ReadLineAsync(pubStream, 1000)).ShouldBe("PUBACK 3");
|
||||
|
||||
// Subscriber receives the published message
|
||||
(await MqttQosWire.ReadLineAsync(subStream, 1000)).ShouldBe("MSG sensors.temp 72");
|
||||
}
|
||||
|
||||
// Go ref: TestMQTTSubQoS1 — QoS 1 PUBACK is sent by the server regardless of whether any subscriber exists.
|
||||
[Fact]
|
||||
public async Task Qos1_publish_without_subscriber_still_returns_puback_to_publisher()
|
||||
{
|
||||
await using var listener = new MqttListener("127.0.0.1", 0);
|
||||
using var cts = new CancellationTokenSource();
|
||||
await listener.StartAsync(cts.Token);
|
||||
|
||||
using var client = new TcpClient();
|
||||
await client.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var stream = client.GetStream();
|
||||
|
||||
await MqttQosWire.WriteLineAsync(stream, "CONNECT lonely-publisher clean=false");
|
||||
(await MqttQosWire.ReadLineAsync(stream, 1000)).ShouldBe("CONNACK");
|
||||
|
||||
// Publish QoS 1 with no subscribers registered
|
||||
await MqttQosWire.WriteLineAsync(stream, "PUBQ1 9 nowhere.topic hello");
|
||||
|
||||
// Server must still acknowledge the publish
|
||||
(await MqttQosWire.ReadLineAsync(stream, 1000)).ShouldBe("PUBACK 9");
|
||||
}
|
||||
|
||||
// Go ref: TestMQTTSubQoS1 — each QoS 1 publish carries a distinct packet identifier assigned by the sender.
|
||||
[Fact]
|
||||
public async Task Multiple_qos1_publishes_use_incrementing_packet_ids()
|
||||
{
|
||||
await using var listener = new MqttListener("127.0.0.1", 0);
|
||||
using var cts = new CancellationTokenSource();
|
||||
await listener.StartAsync(cts.Token);
|
||||
|
||||
using var client = new TcpClient();
|
||||
await client.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var stream = client.GetStream();
|
||||
|
||||
await MqttQosWire.WriteLineAsync(stream, "CONNECT multi-pub-client clean=false");
|
||||
(await MqttQosWire.ReadLineAsync(stream, 1000)).ShouldBe("CONNACK");
|
||||
|
||||
// Send three QoS 1 publishes with consecutive packet IDs
|
||||
await MqttQosWire.WriteLineAsync(stream, "PUBQ1 1 sensor.a alpha");
|
||||
(await MqttQosWire.ReadLineAsync(stream, 1000)).ShouldBe("PUBACK 1");
|
||||
|
||||
await MqttQosWire.WriteLineAsync(stream, "PUBQ1 2 sensor.b beta");
|
||||
(await MqttQosWire.ReadLineAsync(stream, 1000)).ShouldBe("PUBACK 2");
|
||||
|
||||
await MqttQosWire.WriteLineAsync(stream, "PUBQ1 3 sensor.c gamma");
|
||||
(await MqttQosWire.ReadLineAsync(stream, 1000)).ShouldBe("PUBACK 3");
|
||||
}
|
||||
}
|
||||
|
||||
// Duplicated per-file as required — each test file is self-contained.
|
||||
internal static class MqttQosWire
|
||||
{
|
||||
public static async Task WriteLineAsync(NetworkStream stream, string line)
|
||||
{
|
||||
var bytes = Encoding.UTF8.GetBytes(line + "\n");
|
||||
await stream.WriteAsync(bytes);
|
||||
await stream.FlushAsync();
|
||||
}
|
||||
|
||||
public static async Task<string?> ReadLineAsync(NetworkStream stream, int timeoutMs)
|
||||
{
|
||||
using var timeout = new CancellationTokenSource(timeoutMs);
|
||||
var bytes = new List<byte>();
|
||||
var one = new byte[1];
|
||||
try
|
||||
{
|
||||
while (true)
|
||||
{
|
||||
var read = await stream.ReadAsync(one.AsMemory(0, 1), timeout.Token);
|
||||
if (read == 0)
|
||||
return null;
|
||||
if (one[0] == (byte)'\n')
|
||||
break;
|
||||
if (one[0] != (byte)'\r')
|
||||
bytes.Add(one[0]);
|
||||
}
|
||||
}
|
||||
catch (OperationCanceledException)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
return Encoding.UTF8.GetString([.. bytes]);
|
||||
}
|
||||
|
||||
public static async Task<string?> ReadRawAsync(NetworkStream stream, int timeoutMs)
|
||||
{
|
||||
using var timeout = new CancellationTokenSource(timeoutMs);
|
||||
var one = new byte[1];
|
||||
try
|
||||
{
|
||||
var read = await stream.ReadAsync(one.AsMemory(0, 1), timeout.Token);
|
||||
if (read == 0)
|
||||
return null;
|
||||
|
||||
return Encoding.UTF8.GetString(one, 0, read);
|
||||
}
|
||||
catch (OperationCanceledException)
|
||||
{
|
||||
return "__timeout__";
|
||||
}
|
||||
}
|
||||
}
|
||||
212
tests/NATS.Server.Tests/Mqtt/MqttSessionParityTests.cs
Normal file
212
tests/NATS.Server.Tests/Mqtt/MqttSessionParityTests.cs
Normal file
@@ -0,0 +1,212 @@
|
||||
// Ports session management behavior from Go reference:
|
||||
// golang/nats-server/server/mqtt_test.go — TestMQTTCleanSession, TestMQTTPersistedSession,
|
||||
// TestMQTTDuplicateClientID, TestMQTTRecoverSessionAndAddNewSub
|
||||
|
||||
using System.Net;
|
||||
using System.Net.Sockets;
|
||||
using System.Text;
|
||||
using NATS.Server.Mqtt;
|
||||
|
||||
namespace NATS.Server.Tests.Mqtt;
|
||||
|
||||
public class MqttSessionParityTests
|
||||
{
|
||||
// Go ref: TestMQTTCleanSession — connecting with clean=true discards any previous session state.
|
||||
// A clean-session client never receives redeliveries from prior disconnected sessions.
|
||||
[Fact]
|
||||
public async Task Clean_session_true_discards_previous_session_state()
|
||||
{
|
||||
await using var listener = new MqttListener("127.0.0.1", 0);
|
||||
using var cts = new CancellationTokenSource();
|
||||
await listener.StartAsync(cts.Token);
|
||||
|
||||
// First connection: send a QoS 1 publish that goes unacked (session-client, persistent)
|
||||
using (var first = new TcpClient())
|
||||
{
|
||||
await first.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var s = first.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(s, "CONNECT clean-test-client clean=false");
|
||||
(await MqttSessionWire.ReadLineAsync(s, 1000)).ShouldBe("CONNACK");
|
||||
|
||||
// Publish QoS 1 — server records pending, client disconnects without ACKing
|
||||
await MqttSessionWire.WriteLineAsync(s, "PUBQ1 5 device.status online");
|
||||
(await MqttSessionWire.ReadLineAsync(s, 1000)).ShouldBe("PUBACK 5");
|
||||
}
|
||||
|
||||
// Second connection with clean=true — session state must be purged, no REDLIVER
|
||||
using var second = new TcpClient();
|
||||
await second.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var stream = second.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(stream, "CONNECT clean-test-client clean=true");
|
||||
(await MqttSessionWire.ReadLineAsync(stream, 1000)).ShouldBe("CONNACK");
|
||||
|
||||
// No redelivery expected because clean session wiped state
|
||||
(await MqttSessionWire.ReadLineAsync(stream, 300)).ShouldBeNull();
|
||||
}
|
||||
|
||||
// Go ref: TestMQTTPersistedSession — clean=false preserves unacked QoS 1 publishes across reconnect.
|
||||
[Fact]
|
||||
public async Task Clean_session_false_preserves_unacked_publishes_across_reconnect()
|
||||
{
|
||||
await using var listener = new MqttListener("127.0.0.1", 0);
|
||||
using var cts = new CancellationTokenSource();
|
||||
await listener.StartAsync(cts.Token);
|
||||
|
||||
// First connection: publish QoS 1 without sending ACK, then drop
|
||||
using (var first = new TcpClient())
|
||||
{
|
||||
await first.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var s = first.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(s, "CONNECT persist-client clean=false");
|
||||
(await MqttSessionWire.ReadLineAsync(s, 1000)).ShouldBe("CONNACK");
|
||||
|
||||
await MqttSessionWire.WriteLineAsync(s, "PUBQ1 12 alarm.fire detected");
|
||||
(await MqttSessionWire.ReadLineAsync(s, 1000)).ShouldBe("PUBACK 12");
|
||||
// Disconnect without sending ACK 12
|
||||
}
|
||||
|
||||
// Second connection with same clientId, clean=false — server must redeliver
|
||||
using var second = new TcpClient();
|
||||
await second.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var stream = second.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(stream, "CONNECT persist-client clean=false");
|
||||
(await MqttSessionWire.ReadLineAsync(stream, 1000)).ShouldBe("CONNACK");
|
||||
(await MqttSessionWire.ReadLineAsync(stream, 1000)).ShouldBe("REDLIVER 12 alarm.fire detected");
|
||||
}
|
||||
|
||||
// Go ref: TestMQTTCleanSession — after clean disconnect the session entry is removed;
|
||||
// a subsequent persistent reconnect starts fresh with no pending messages.
|
||||
[Fact]
|
||||
public async Task Session_disconnect_cleans_up_client_tracking_on_clean_session()
|
||||
{
|
||||
await using var listener = new MqttListener("127.0.0.1", 0);
|
||||
using var cts = new CancellationTokenSource();
|
||||
await listener.StartAsync(cts.Token);
|
||||
|
||||
// Connect and immediately disconnect without publishing anything (clean=true)
|
||||
using (var first = new TcpClient())
|
||||
{
|
||||
await first.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var s = first.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(s, "CONNECT transient-client clean=true");
|
||||
(await MqttSessionWire.ReadLineAsync(s, 1000)).ShouldBe("CONNACK");
|
||||
}
|
||||
|
||||
// Reconnect with clean=false — no session was saved, so no redeliveries
|
||||
using var second = new TcpClient();
|
||||
await second.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var stream = second.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(stream, "CONNECT transient-client clean=false");
|
||||
(await MqttSessionWire.ReadLineAsync(stream, 1000)).ShouldBe("CONNACK");
|
||||
|
||||
// Nothing pending from the previous clean-session connection
|
||||
(await MqttSessionWire.ReadLineAsync(stream, 300)).ShouldBeNull();
|
||||
}
|
||||
|
||||
// Go ref: TestMQTTDuplicateClientID — multiple concurrent sessions on distinct client IDs
|
||||
// operate independently with no cross-contamination of messages or session state.
|
||||
[Fact]
|
||||
public async Task Multiple_concurrent_sessions_on_different_client_ids_work_independently()
|
||||
{
|
||||
await using var listener = new MqttListener("127.0.0.1", 0);
|
||||
using var cts = new CancellationTokenSource();
|
||||
await listener.StartAsync(cts.Token);
|
||||
|
||||
// Client A — persistent session, QoS 1 publish unacked
|
||||
using var clientA = new TcpClient();
|
||||
await clientA.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var streamA = clientA.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(streamA, "CONNECT client-alpha clean=false");
|
||||
(await MqttSessionWire.ReadLineAsync(streamA, 1000)).ShouldBe("CONNACK");
|
||||
await MqttSessionWire.WriteLineAsync(streamA, "PUBQ1 7 alpha.topic alpha-payload");
|
||||
(await MqttSessionWire.ReadLineAsync(streamA, 1000)).ShouldBe("PUBACK 7");
|
||||
|
||||
// Client B — independent persistent session, different topic and packet ID
|
||||
using var clientB = new TcpClient();
|
||||
await clientB.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var streamB = clientB.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(streamB, "CONNECT client-beta clean=false");
|
||||
(await MqttSessionWire.ReadLineAsync(streamB, 1000)).ShouldBe("CONNACK");
|
||||
await MqttSessionWire.WriteLineAsync(streamB, "PUBQ1 8 beta.topic beta-payload");
|
||||
(await MqttSessionWire.ReadLineAsync(streamB, 1000)).ShouldBe("PUBACK 8");
|
||||
|
||||
// Disconnect both without ACKing
|
||||
clientA.Dispose();
|
||||
clientB.Dispose();
|
||||
|
||||
// Reconnect alpha — must only redeliver alpha's pending publish
|
||||
using var reconnectA = new TcpClient();
|
||||
await reconnectA.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var rsA = reconnectA.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(rsA, "CONNECT client-alpha clean=false");
|
||||
(await MqttSessionWire.ReadLineAsync(rsA, 1000)).ShouldBe("CONNACK");
|
||||
(await MqttSessionWire.ReadLineAsync(rsA, 1000)).ShouldBe("REDLIVER 7 alpha.topic alpha-payload");
|
||||
|
||||
// Reconnect beta — must only redeliver beta's pending publish
|
||||
using var reconnectB = new TcpClient();
|
||||
await reconnectB.ConnectAsync(IPAddress.Loopback, listener.Port);
|
||||
var rsB = reconnectB.GetStream();
|
||||
await MqttSessionWire.WriteLineAsync(rsB, "CONNECT client-beta clean=false");
|
||||
(await MqttSessionWire.ReadLineAsync(rsB, 1000)).ShouldBe("CONNACK");
|
||||
(await MqttSessionWire.ReadLineAsync(rsB, 1000)).ShouldBe("REDLIVER 8 beta.topic beta-payload");
|
||||
|
||||
// Alpha should not see beta's message and vice-versa (no cross-contamination)
|
||||
(await MqttSessionWire.ReadLineAsync(rsA, 200)).ShouldBeNull();
|
||||
(await MqttSessionWire.ReadLineAsync(rsB, 200)).ShouldBeNull();
|
||||
}
|
||||
}
|
||||
|
||||
// Duplicated per-file as required — each test file is self-contained.
|
||||
internal static class MqttSessionWire
|
||||
{
|
||||
public static async Task WriteLineAsync(NetworkStream stream, string line)
|
||||
{
|
||||
var bytes = Encoding.UTF8.GetBytes(line + "\n");
|
||||
await stream.WriteAsync(bytes);
|
||||
await stream.FlushAsync();
|
||||
}
|
||||
|
||||
public static async Task<string?> ReadLineAsync(NetworkStream stream, int timeoutMs)
|
||||
{
|
||||
using var timeout = new CancellationTokenSource(timeoutMs);
|
||||
var bytes = new List<byte>();
|
||||
var one = new byte[1];
|
||||
try
|
||||
{
|
||||
while (true)
|
||||
{
|
||||
var read = await stream.ReadAsync(one.AsMemory(0, 1), timeout.Token);
|
||||
if (read == 0)
|
||||
return null;
|
||||
if (one[0] == (byte)'\n')
|
||||
break;
|
||||
if (one[0] != (byte)'\r')
|
||||
bytes.Add(one[0]);
|
||||
}
|
||||
}
|
||||
catch (OperationCanceledException)
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
return Encoding.UTF8.GetString([.. bytes]);
|
||||
}
|
||||
|
||||
public static async Task<string?> ReadRawAsync(NetworkStream stream, int timeoutMs)
|
||||
{
|
||||
using var timeout = new CancellationTokenSource(timeoutMs);
|
||||
var one = new byte[1];
|
||||
try
|
||||
{
|
||||
var read = await stream.ReadAsync(one.AsMemory(0, 1), timeout.Token);
|
||||
if (read == 0)
|
||||
return null;
|
||||
|
||||
return Encoding.UTF8.GetString(one, 0, read);
|
||||
}
|
||||
catch (OperationCanceledException)
|
||||
{
|
||||
return "__timeout__";
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user