Case
sendspin-server-cpp -> aiosendspin
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
aiosendspin
Status
Passed
Metadata snapshot matches and the first state carried a past or present timestamp
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__aiosendspin",
"client_exit_code": 0,
"client_impl": "aiosendspin",
"reason": "Metadata snapshot matches and the first state carried a past or present timestamp",
"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": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"name": "aiosendspin-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": 783011254,
"timestamp_us": 783011087
}
},
"peer_hello": {
"payload": {
"name": "aiosendspin-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": "3LgX5DLKkyXlpWqHrmEykX1KnWzgoC2XFOMV3PZmnFE",
"server_name": "sendspin-server-cpp server",
"status": "ok",
"time_exchange": [
{
"payload": {
"client_transmitted": 783013332
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783013332,
"server_received": 783013420,
"server_transmitted": 783013498
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783215518
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783215518,
"server_received": 783215684,
"server_transmitted": 783215749
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 783417754
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 783417754,
"server_received": 783417945,
"server_transmitted": 783418069
},
"type": "server/time"
}
]
}Server log
RAWsendspin-server-cpp: dialing ws://127.0.0.1:19969/sendspin for playback
sendspin-server-cpp: "aiosendspin-client" at 127.0.0.1:19969 connected
listener: client aiosendspin-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": "3LgX5DLKkyXlpWqHrmEykX1KnWzgoC2XFOMV3PZmnFE",
"discovery_method": "registry",
"peer_hello": {
"payload": {
"name": "aiosendspin-client",
"supported_roles": [
"metadata@v1"
],
"supported_pair_methods": {
"pairing_psk": {}
},
"unpaired_access": {
"enabled": true
}
},
"type": "client/hello"
},
"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": [
{
"payload": {
"client_transmitted": 783013332
},
"type": "client/time"
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783013332,
"server_received": 783013420,
"server_transmitted": 783013498
}
},
{
"payload": {
"client_transmitted": 783215518
},
"type": "client/time"
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783215518,
"server_received": 783215684,
"server_transmitted": 783215749
}
},
{
"payload": {
"client_transmitted": 783417754
},
"type": "client/time"
},
{
"type": "server/time",
"payload": {
"client_transmitted": 783417754,
"server_received": 783417945,
"server_transmitted": 783418069
}
}
],
"client": {
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"name": "aiosendspin-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": 783011087,
"bound_us": 783011254
}
}
}
Client summary (JSON)
RAW{
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"initiator_role": "server",
"metadata": {
"first_object_state": {
"timestamp_us": 783011087,
"update_index": 1
},
"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": 2
},
"peer_hello": null,
"preferred_codec": "none",
"role": "client",
"scenario_id": "server-initiated-metadata",
"server": null,
"status": "ok"
}Client log
RAWINFO:aiosendspin.client.listener:ClientListener started on port 19969, path /sendspin
INFO:aiohttp.access:127.0.0.1 [21/Oct/2026:07:21:39 +0000] "GET /sendspin HTTP/1.1" 101 0 "-" "-"
INFO:aiosendspin.client.listener:ClientListener stopped
{
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"initiator_role": "server",
"metadata": {
"first_object_state": {
"timestamp_us": 783011087,
"update_index": 1
},
"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": 2
},
"peer_hello": null,
"preferred_codec": "none",
"role": "client",
"scenario_id": "server-initiated-metadata",
"server": null,
"status": "ok"
}
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 · python-adapters · built · 0.24s
RAW.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/player/audio_transformers.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/player/capabilities.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/player/events.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/player/group.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/player/types.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/player/v1.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/registry.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/scheduled_state.py'... Listing 'src/conformance/_vendor/aiosendspin/server/roles/source'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/source/__init__.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/source/events.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/source/stream.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/source/v1.py'... Listing 'src/conformance/_vendor/aiosendspin/server/roles/visualizer'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer/__init__.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer/features.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer/group.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer/packing.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer/types.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer/v1.py'... Listing 'src/conformance/_vendor/aiosendspin/server/roles/visualizer_draft_r1'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer_draft_r1/__init__.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer_draft_r1/features.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer_draft_r1/packing.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/roles/visualizer_draft_r1/role.py'... Compiling 'src/conformance/_vendor/aiosendspin/server/server.py'... Compiling 'src/conformance/_vendor/aiosendspin/util.py'... Listing 'src/conformance/adapters'... Compiling 'src/conformance/adapters/__init__.py'... Compiling 'src/conformance/adapters/_aiosendspin_pairing.py'... Compiling 'src/conformance/adapters/_aiosendspin_protocol_evidence.py'... Compiling 'src/conformance/adapters/aiosendspin_client.py'... Compiling 'src/conformance/adapters/aiosendspin_server.py'... Compiling 'src/conformance/adapters/placeholder.py'... Compiling 'src/conformance/cli.py'... Compiling 'src/conformance/flac.py'... Compiling 'src/conformance/merge.py'... Compiling 'src/conformance/pcm.py'... Compiling 'src/conformance/registry.py'... Listing 'src/conformance/validator'... Compiling 'src/conformance/validator/__init__.py'... Compiling 'src/conformance/validator/checks.py'... Compiling 'src/conformance/validator/cli.py'... Compiling 'src/conformance/validator/code_pairing.py'... Compiling 'src/conformance/validator/code_pairing_checks.py'... Compiling 'src/conformance/validator/discovery.py'... Compiling 'src/conformance/validator/findings.py'... Compiling 'src/conformance/validator/noncompliance_refs.py'... Compiling 'src/conformance/validator/prompter.py'... Compiling 'src/conformance/validator/recorder.py'... Compiling 'src/conformance/validator/report.py'... Compiling 'src/conformance/validator/session.py'... Compiling 'src/conformance/validator/storage.py'... Compiling 'src/conformance/validator/suite_checks.py'... Compiling 'src/conformance/validator/suites.py'... Listing 'src/sendspin_conformance.egg-info'... Listing 'scripts'... Compiling 'scripts/detect_regressions.py'... Compiling 'scripts/merge_results.py'... Compiling 'scripts/run_all.py'... Compiling 'scripts/setup_repositories.py'... Compiling 'scripts/setup_workspace.py'... Compiling 'scripts/vendor_aiosendspin.py'...