Case
sendspin-server-cpp -> sendspin-dotnet
Start the server first, then the client. The client discovers or looks up the server and initiates the WebSocket connection, the server sends a metadata state update, disconnects, and the matrix compares a normalized metadata snapshot and checks that the first state carrying a metadata object bore a past or present timestamp.
Server
sendspin-server-cpp
Client
sendspin-dotnet
Status
Passed
Metadata snapshot matches
Server activation
Initial server/activate
What the sendspin-server-cpp server's own adapter recorded for its first server/activate on this connection, reported as sent. The case fails when none was sent, when its activities are not unique values from playback and pairing, or when it omits active_roles. Nothing else in it is checked against the specification: which activities and roles the matched PSK allows is not judged. A recording that cannot be read as that message is shown whole and not judged either.
Server group state
Every group/update after activation
What the sendspin-server-cpp server's own adapter recorded for each group/update it sent after its first server/activate on this connection, in order and reported as sent. The case fails when none followed, or when in any of them playback_state is not playing or stopped, or group_id or group_name is missing or not a string. How soon the first followed is not judged, because the specification says promptly and gives no bound, so one sent at any point in the case counts. Whether a change to a field produced a further message is not judged either. A recording of anything other than that message is shown whole and fails the case as a harness gap.
1 of 1
Inspection
Summaries, logs, and builds
Matrix result
RAW{
"case_dir": "artifacts/results/data/macos__client-initiated-metadata__sendspin-server-cpp__to__sendspin-dotnet",
"client_exit_code": 0,
"client_impl": "sendspin-dotnet",
"reason": "Metadata snapshot matches",
"scenario_id": "client-initiated-metadata",
"scenario_revision": 1,
"server_exit_code": 0,
"server_impl": "sendspin-server-cpp",
"status": "passed",
"unsupported": false
}Server summary (JSON)
RAW{
"activation": {
"payload": {
"active_roles": [
"metadata@v1"
],
"activities": []
},
"type": "server/activate"
},
"availability_trace": [
{
"available": true,
"type": "client/state"
}
],
"client": {
"active_roles": [
"metadata@v1"
],
"client_id": "UBvEZpf3tsLwAFZU4Vds0oR2wJJwmgTSAhQhNttOLS4",
"name": "sendspin-dotnet-client",
"supported_roles": [
"metadata@v1"
]
},
"discovery_method": "registry",
"group_updates": [
{
"payload": {
"group_id": "1",
"group_name": "sendspin-server-cpp server",
"playback_state": "stopped"
},
"type": "group/update"
}
],
"implementation": "sendspin-server-cpp",
"initiator_role": "client",
"metadata": {
"expected": {
"album": "Protocol Fixtures",
"album_artist": "Sendspin",
"artist": "Sendspin Conformance",
"artwork_url": "https://example.invalid/almost-silent.jpg",
"progress": {
"playback_speed": 1000,
"track_duration": 180000,
"track_progress": 12000
},
"title": "Almost Silent",
"track": 1,
"year": 2026
},
"first_state_sent": {
"bound_us": 1182837697,
"timestamp_us": 1182837380
}
},
"peer_hello": {
"payload": {
"device_info": {
"manufacturer": "Sendspin Conformance",
"product_name": "Conformance Dotnet Client",
"software_version": "0.1.0"
},
"name": "sendspin-dotnet-client",
"supported_pair_methods": {
"pairing_psk": {}
},
"supported_roles": [
"metadata@v1"
],
"unpaired_access": {
"enabled": true
}
},
"type": "client/hello"
},
"preferred_codec": "none",
"role": "server",
"scenario_id": "client-initiated-metadata",
"server_id": "0K3kk9XUMfCL3XjGdTtq0X-721DypYz9YWUdXvYdYA0",
"server_name": "sendspin-server-cpp server",
"status": "ok",
"time_exchange": [
{
"payload": {
"client_transmitted": 1792567699824083
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1792567699824083,
"server_received": 1182867035,
"server_transmitted": 1182867122
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1792567699861744
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1792567699861744,
"server_received": 1182902558,
"server_transmitted": 1182902648
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1792567699862300
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1792567699862300,
"server_received": 1182903076,
"server_transmitted": 1182903157
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1792567699862577
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1792567699862577,
"server_received": 1182903338,
"server_transmitted": 1182903377
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1792567699862790
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1792567699862790,
"server_received": 1182903544,
"server_transmitted": 1182903607
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1792567699863012
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1792567699863012,
"server_received": 1182903737,
"server_transmitted": 1182903799
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1792567699863218
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1792567699863218,
"server_received": 1182903939,
"server_transmitted": 1182903992
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1792567699863406
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1792567699863406,
"server_received": 1182904130,
"server_transmitted": 1182904189
},
"type": "server/time"
}
]
}Server log
RAWsendspin-server-cpp: "sendspin-dotnet-client" at 127.0.0.1:49532 connected
listener: client sendspin-dotnet-client disconnected: server stopped
{
"status": "ok",
"implementation": "sendspin-server-cpp",
"role": "server",
"server_name": "sendspin-server-cpp server",
"scenario_id": "client-initiated-metadata",
"initiator_role": "client",
"preferred_codec": "none",
"server_id": "0K3kk9XUMfCL3XjGdTtq0X-721DypYz9YWUdXvYdYA0",
"discovery_method": "registry",
"peer_hello": {
"type": "client/hello",
"payload": {
"name": "sendspin-dotnet-client",
"supported_pair_methods": {
"pairing_psk": {}
},
"unpaired_access": {
"enabled": true
},
"supported_roles": [
"metadata@v1"
],
"device_info": {
"product_name": "Conformance Dotnet Client",
"manufacturer": "Sendspin Conformance",
"software_version": "0.1.0"
}
}
},
"activation": {
"type": "server/activate",
"payload": {
"activities": [],
"active_roles": [
"metadata@v1"
]
}
},
"group_updates": [
{
"type": "group/update",
"payload": {
"playback_state": "stopped",
"group_id": "1",
"group_name": "sendspin-server-cpp server"
}
}
],
"availability_trace": [
{
"type": "client/state",
"available": true
}
],
"time_exchange": [
{
"type": "client/time",
"payload": {
"client_transmitted": 1792567699824083
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 1792567699824083,
"server_received": 1182867035,
"server_transmitted": 1182867122
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 1792567699861744
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 1792567699861744,
"server_received": 1182902558,
"server_transmitted": 1182902648
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 1792567699862300
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 1792567699862300,
"server_received": 1182903076,
"server_transmitted": 1182903157
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 1792567699862577
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 1792567699862577,
"server_received": 1182903338,
"server_transmitted": 1182903377
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 1792567699862790
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 1792567699862790,
"server_received": 1182903544,
"server_transmitted": 1182903607
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 1792567699863012
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 1792567699863012,
"server_received": 1182903737,
"server_transmitted": 1182903799
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 1792567699863218
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 1792567699863218,
"server_received": 1182903939,
"server_transmitted": 1182903992
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 1792567699863406
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 1792567699863406,
"server_received": 1182904130,
"server_transmitted": 1182904189
}
}
],
"client": {
"client_id": "UBvEZpf3tsLwAFZU4Vds0oR2wJJwmgTSAhQhNttOLS4",
"name": "sendspin-dotnet-client",
"supported_roles": [
"metadata@v1"
],
"active_roles": [
"metadata@v1"
]
},
"metadata": {
"expected": {
"title": "Almost Silent",
"artist": "Sendspin Conformance",
"album_artist": "Sendspin",
"album": "Protocol Fixtures",
"artwork_url": "https://example.invalid/almost-silent.jpg",
"year": 2026,
"track": 1,
"progress": {
"track_progress": 12000,
"track_duration": 180000,
"playback_speed": 1000
}
},
"first_state_sent": {
"timestamp_us": 1182837380,
"bound_us": 1182837697
}
}
}
Client summary (JSON)
RAW{
"client_id": "UBvEZpf3tsLwAFZU4Vds0oR2wJJwmgTSAhQhNttOLS4",
"client_name": "sendspin-dotnet-client",
"implementation": "sendspin-dotnet",
"initiator_role": "client",
"metadata": {
"received": {
"album": "Protocol Fixtures",
"album_artist": "Sendspin",
"artist": "Sendspin Conformance",
"artwork_url": "https://example.invalid/almost-silent.jpg",
"progress": {
"playback_speed": 1000,
"track_duration": 180000,
"track_progress": 12000
},
"title": "Almost Silent",
"track": 1,
"year": 2026
},
"update_count": 3
},
"peer_hello": {
"active_roles": [
"metadata@v1"
],
"name": "sendspin-server-cpp server",
"server_id": "",
"source@v1_support": {
"supported_codecs": [
"pcm",
"flac",
"opus"
]
},
"version": 1
},
"preferred_codec": "none",
"reason": null,
"role": "client",
"scenario_id": "client-initiated-metadata",
"server": {
"connection_reason": null,
"server_id": "0K3kk9XUMfCL3XjGdTtq0X-721DypYz9YWUdXvYdYA0",
"server_name": "sendspin-server-cpp server"
},
"status": "ok"
}Client log
RAW07:28:19 info: Sendspin.SDK.Client.SendspinClientService[0] Connecting to ws://127.0.0.1:19067/sendspin
07:28:19 info: Sendspin.SDK.Connection.SendspinConnection[0] Connecting to ws://127.0.0.1:19067/sendspin...
07:28:19 info: Sendspin.SDK.Connection.SendspinConnection[0] Connected to ws://127.0.0.1:19067/sendspin
07:28:19 info: Sendspin.SDK.Client.SendspinClientService[0] Server hello received (encrypted): 0K3kk9XUMfCL3XjGdTtq0X-721DypYz9YWUdXvYdYA0 (sendspin-server-cpp server)
07:28:19 info: Sendspin.SDK.Client.SendspinClientService[0] Sending client/hello (encrypted): {"type":"client/hello","payload":{"name":"sendspin-dotnet-client","supported_pair_methods":{"pairing_psk":{}},"unpaired_access":{"enabled":true},"supported_roles":["metadata@v1"],"device_info":{"product_name":"Conformance Dotnet Client","manufacturer":"Sendspin Conformance","software_version":"0.1.0"}}}
07:28:19 info: Sendspin.SDK.Client.SendspinClientService[0] Server activate: activities [], roles [metadata@v1]
07:28:19 info: Sendspin.SDK.Client.SendspinClientService[0] Sending initial client/state: {"type":"client/state","payload":{"available":true}}
07:28:19 info: Sendspin.SDK.Client.SendspinClientService[0] Handshake complete with server 0K3kk9XUMfCL3XjGdTtq0X-721DypYz9YWUdXvYdYA0 (sendspin-server-cpp server)
07:28:19 info: Sendspin.SDK.Client.SendspinClientService[0] group/update [sendspin-dotnet-client]: Group name changed '(none)' -> 'sendspin-server-cpp server'
07:28:20 info: Sendspin.SDK.Connection.SendspinConnection[0] Server closed connection: EndpointUnavailable -
{
"status": "ok",
"reason": null,
"implementation": "sendspin-dotnet",
"role": "client",
"scenario_id": "client-initiated-metadata",
"initiator_role": "client",
"preferred_codec": "none",
"client_name": "sendspin-dotnet-client",
"client_id": "UBvEZpf3tsLwAFZU4Vds0oR2wJJwmgTSAhQhNttOLS4",
"server": {
"server_id": "0K3kk9XUMfCL3XjGdTtq0X-721DypYz9YWUdXvYdYA0",
"server_name": "sendspin-server-cpp server",
"connection_reason": null
},
"peer_hello": {
"server_id": "",
"name": "sendspin-server-cpp server",
"source@v1_support": {
"supported_codecs": [
"pcm",
"flac",
"opus"
]
},
"version": 1,
"active_roles": [
"metadata@v1"
]
},
"metadata": {
"update_count": 3,
"received": {
"title": "Almost Silent",
"artist": "Sendspin Conformance",
"album_artist": "Sendspin",
"album": "Protocol Fixtures",
"artwork_url": "https://example.invalid/almost-silent.jpg",
"year": 2026,
"track": 1,
"progress": {
"track_progress": 12000,
"track_duration": 180000,
"playback_speed": 1000
}
}
}
}
Server build log · sendspin-server-cpp-server · built · 161.45s
RAWp-server.dir/trace_recorder.cpp.o
[100%] Linking CXX executable conformance-sendspin-server-cpp-server
[100%] Built target conformance-sendspin-server-cpp-server
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:21:6: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
21 | #if (HAS_SIZEOF_INT128_64BIT || HAS_MSVC_64BIT || HAS_GCC_4_4_64BIT)
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:17:34: note: expanded from macro 'HAS_SIZEOF_INT128_64BIT'
17 | #define HAS_SIZEOF_INT128_64BIT (defined(__SIZEOF_INT128__) && defined(__LP64__))
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:21:6: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:17:64: note: expanded from macro 'HAS_SIZEOF_INT128_64BIT'
17 | #define HAS_SIZEOF_INT128_64BIT (defined(__SIZEOF_INT128__) && defined(__LP64__))
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:21:33: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
21 | #if (HAS_SIZEOF_INT128_64BIT || HAS_MSVC_64BIT || HAS_GCC_4_4_64BIT)
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:18:25: note: expanded from macro 'HAS_MSVC_64BIT'
18 | #define HAS_MSVC_64BIT (defined(_MSC_VER) && defined(_M_X64))
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:21:33: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:18:46: note: expanded from macro 'HAS_MSVC_64BIT'
18 | #define HAS_MSVC_64BIT (defined(_MSC_VER) && defined(_M_X64))
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:21:51: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
21 | #if (HAS_SIZEOF_INT128_64BIT || HAS_MSVC_64BIT || HAS_GCC_4_4_64BIT)
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:19:28: note: expanded from macro 'HAS_GCC_4_4_64BIT'
19 | #define HAS_GCC_4_4_64BIT (defined(__GNUC__) && defined(__LP64__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4))))
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:21:51: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
/Users/runner/work/conformance/conformance/adapters/sendspin-server-cpp/server/build/_deps/noise_c-src/src/crypto/donna/poly1305-donna.c:19:49: note: expanded from macro 'HAS_GCC_4_4_64BIT'
19 | #define HAS_GCC_4_4_64BIT (defined(__GNUC__) && defined(__LP64__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4))))
| ^
6 warnings generated.Client build log · sendspin-dotnet-client · built · 17.06s
RAWSDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1500BracesForMultiLineStatementsMustNotShareLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1502ElementMustNotBeOnASingleLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1508ClosingBracesMustNotBePrecededByBlankLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1500BracesForMultiLineStatementsMustNotShareLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1502ElementMustNotBeOnASingleLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1508ClosingBracesMustNotBePrecededByBlankLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1500BracesForMultiLineStatementsMustNotShareLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1502ElementMustNotBeOnASingleLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.LayoutRules.SA1508ClosingBracesMustNotBePrecededByBlankLine' threw an exception of type 'System.NullReferenceException' with message 'Object reference not set to an instance of an object.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/adapters/sendspin-dotnet/client/Program.cs(607,52): warning CS0067: The event 'HashingAudioPipeline.ErrorOccurred' is never used [/Users/runner/work/conformance/conformance/adapters/sendspin-dotnet/client/Conformance.SendspinDotnet.Client.csproj]
/Users/runner/work/conformance/conformance/adapters/sendspin-dotnet/client/Program.cs(608,37): warning CS0067: The event 'HashingAudioPipeline.OutputLatencyChanged' is never used [/Users/runner/work/conformance/conformance/adapters/sendspin-dotnet/client/Conformance.SendspinDotnet.Client.csproj]
1228 Warning(s)
0 Error(s)
Time Elapsed 00:00:16.04