Case
sendspin-server-cpp -> sendspin-cpp
Start the server first, then the client. The client advertises a listener, the server connects in, 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-cpp
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__server-initiated-metadata__sendspin-server-cpp__to__sendspin-cpp",
"client_exit_code": 0,
"client_impl": "sendspin-cpp",
"reason": "Metadata snapshot matches",
"scenario_id": "server-initiated-metadata",
"scenario_revision": 5,
"server_exit_code": 0,
"server_impl": "sendspin-server-cpp",
"status": "passed",
"unsupported": false
}Server summary (JSON)
RAW{
"activation": {
"payload": {
"active_roles": [
"metadata@v1"
],
"activities": [
"playback"
]
},
"type": "server/activate"
},
"availability_trace": [
{
"available": true,
"type": "client/state"
}
],
"client": {
"active_roles": [
"metadata@v1"
],
"client_id": "0nFZn2PAitWjHELDi30mWS18886l-TTVY-n-KEwuOk0",
"name": "sendspin-cpp-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": "server",
"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": 783236680,
"timestamp_us": 783236523
}
},
"peer_hello": {
"payload": {
"device_info": {
"mac_address": "9e:1f:65:cd:d6:b8",
"manufacturer": "Sendspin Conformance",
"product_name": "sendspin-cpp Conformance Client",
"software_version": "0.2.0"
},
"name": "sendspin-cpp-client",
"supported_pair_methods": {
"pairing_psk": {}
},
"supported_roles": [
"metadata@v1"
],
"unpaired_access": {
"enabled": true
}
},
"type": "client/hello"
},
"preferred_codec": "none",
"role": "server",
"scenario_id": "server-initiated-metadata",
"server_id": "Yqfp1f-Ae73p2MBKgtYjQGvrxyQUuTakLaiolur6jAE",
"server_name": "sendspin-server-cpp server",
"status": "ok",
"time_exchange": [
{
"payload": {
"client_transmitted": 783259743
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783259743,
"server_received": 783259884,
"server_transmitted": 783259957
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783260050
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783260050,
"server_received": 783260082,
"server_transmitted": 783260124
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783260194
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783260194,
"server_received": 783260227,
"server_transmitted": 783260272
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783260341
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783260341,
"server_received": 783260371,
"server_transmitted": 783260410
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783260461
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783260461,
"server_received": 783260536,
"server_transmitted": 783260572
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783260649
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783260649,
"server_received": 783260687,
"server_transmitted": 783260759
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783260894
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783260894,
"server_received": 783260949,
"server_transmitted": 783260984
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783261075
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783261075,
"server_received": 783261104,
"server_transmitted": 783261138
},
"type": "server/time"
}
]
}Server log
RAWsendspin-server-cpp: dialing ws://127.0.0.1:19970/sendspin for playback
sendspin-server-cpp: "sendspin-cpp-client" at 127.0.0.1:19970 connected
listener: client sendspin-cpp-client disconnected: server stopped
{
"status": "ok",
"implementation": "sendspin-server-cpp",
"role": "server",
"server_name": "sendspin-server-cpp server",
"scenario_id": "server-initiated-metadata",
"initiator_role": "server",
"preferred_codec": "none",
"server_id": "Yqfp1f-Ae73p2MBKgtYjQGvrxyQUuTakLaiolur6jAE",
"discovery_method": "registry",
"peer_hello": {
"type": "client/hello",
"payload": {
"name": "sendspin-cpp-client",
"device_info": {
"product_name": "sendspin-cpp Conformance Client",
"manufacturer": "Sendspin Conformance",
"software_version": "0.2.0",
"mac_address": "9e:1f:65:cd:d6:b8"
},
"supported_pair_methods": {
"pairing_psk": {}
},
"unpaired_access": {
"enabled": true
},
"supported_roles": [
"metadata@v1"
]
}
},
"activation": {
"type": "server/activate",
"payload": {
"activities": [
"playback"
],
"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": 783259743
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783259743,
"server_received": 783259884,
"server_transmitted": 783259957
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 783260050
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783260050,
"server_received": 783260082,
"server_transmitted": 783260124
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 783260194
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783260194,
"server_received": 783260227,
"server_transmitted": 783260272
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 783260341
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783260341,
"server_received": 783260371,
"server_transmitted": 783260410
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 783260461
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783260461,
"server_received": 783260536,
"server_transmitted": 783260572
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 783260649
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783260649,
"server_received": 783260687,
"server_transmitted": 783260759
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 783260894
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783260894,
"server_received": 783260949,
"server_transmitted": 783260984
}
},
{
"type": "client/time",
"payload": {
"client_transmitted": 783261075
}
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783261075,
"server_received": 783261104,
"server_transmitted": 783261138
}
}
],
"client": {
"client_id": "0nFZn2PAitWjHELDi30mWS18886l-TTVY-n-KEwuOk0",
"name": "sendspin-cpp-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": 783236523,
"bound_us": 783236680
}
}
}
Client summary (JSON)
RAW{
"client_id": "0nFZn2PAitWjHELDi30mWS18886l-TTVY-n-KEwuOk0",
"client_name": "sendspin-cpp-client",
"implementation": "sendspin-cpp",
"initiator_role": "server",
"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": 1
},
"peer_hello": {
"payload": {
"name": "sendspin-server-cpp server",
"source@v1_support": {
"supported_codecs": [
"pcm",
"flac",
"opus"
]
}
},
"type": "server/hello"
},
"preferred_codec": "none",
"reason": null,
"role": "client",
"scenario_id": "server-initiated-metadata",
"server": {
"connection_reason": null,
"name": "sendspin-server-cpp server",
"server_id": "Yqfp1f-Ae73p2MBKgtYjQGvrxyQUuTakLaiolur6jAE",
"version": 1
},
"status": "ok"
}Client log
RAWI sendspin.record_store: Provisioned Sendspin Pairing PSK: JETWtrIrKXSdTPlPWTUQJ2heJFXW7RM3i3dDzAKAFzI
I sendspin.client: Generated ephemeral static keypair (no provider); client_id=0nFZn2PAitWjHELDi30mWS18886l-TTVY-n-KEwuOk0
I sendspin.ws_server: Starting server on port: 19970 (max connections: 4)
I sendspin.noise_handshake: Noise handshake complete: server_id=Yqfp1f-Ae73p2MBKgtYjQGvrxyQUuTakLaiolur6jAE psk_category=2
I sendspin.connection: Noise transport active (server_id=Yqfp1f-Ae73p2MBKgtYjQGvrxyQUuTakLaiolur6jAE, psk_category=2)
I sendspin.conn_mgr: Connection admitted: server_id=Yqfp1f-Ae73p2MBKgtYjQGvrxyQUuTakLaiolur6jAE
I sendspin.conn_mgr: Admitted connection lost
{"status":"ok","reason":null,"implementation":"sendspin-cpp","role":"client","scenario_id":"server-initiated-metadata","initiator_role":"server","preferred_codec":"none","client_name":"sendspin-cpp-client","client_id":"0nFZn2PAitWjHELDi30mWS18886l-TTVY-n-KEwuOk0","server":{"server_id":"Yqfp1f-Ae73p2MBKgtYjQGvrxyQUuTakLaiolur6jAE","name":"sendspin-server-cpp server","version":1,"connection_reason":null},"peer_hello":{"type":"server/hello","payload":{"name":"sendspin-server-cpp server","source@v1_support":{"supported_codecs":["pcm","flac","opus"]}}},"metadata":{"update_count":1,"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-cpp-client · built · 63.96s
RAW/IXWebSocketPerMessageDeflateCodec.cpp:194:60: warning: unused parameter 'clientNoContextTakeOver' [-Wunused-parameter]
194 | bool clientNoContextTakeOver)
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp:209:80: warning: unused parameter 'in' [-Wunused-parameter]
209 | bool WebSocketPerMessageDeflateDecompressor::decompress(const std::string& in, std::string& out)
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp:209:97: warning: unused parameter 'out' [-Wunused-parameter]
209 | bool WebSocketPerMessageDeflateDecompressor::decompress(const std::string& in, std::string& out)
| ^
In file included from /Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp:7:
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h:39:13: warning: private field '_flush' is not used [-Wunused-private-field]
39 | int _flush;
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h:40:44: warning: private field '_compressBuffer' is not used [-Wunused-private-field]
40 | std::array<unsigned char, 1 << 14> _compressBuffer;
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h:57:13: warning: private field '_flush' is not used [-Wunused-private-field]
57 | int _flush;
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h:58:44: warning: private field '_compressBuffer' is not used [-Wunused-private-field]
58 | std::array<unsigned char, 1 << 14> _compressBuffer;
| ^
12 warnings generated.
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp:17:26: warning: unused variable 'minServerMaxWindowBits' [-Wunused-const-variable]
17 | static const uint8_t minServerMaxWindowBits = 8;
| ^~~~~~~~~~~~~~~~~~~~~~
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp:18:26: warning: unused variable 'maxServerMaxWindowBits' [-Wunused-const-variable]
18 | static const uint8_t maxServerMaxWindowBits = 15;
| ^~~~~~~~~~~~~~~~~~~~~~
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp:21:26: warning: unused variable 'minClientMaxWindowBits' [-Wunused-const-variable]
21 | static const uint8_t minClientMaxWindowBits = 8;
| ^~~~~~~~~~~~~~~~~~~~~~
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp:22:26: warning: unused variable 'maxClientMaxWindowBits' [-Wunused-const-variable]
22 | static const uint8_t maxClientMaxWindowBits = 15;
| ^~~~~~~~~~~~~~~~~~~~~~
4 warnings generated.