Case
aiosendspin -> aiosendspin
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
aiosendspin
Client
aiosendspin
Status
Passed
Metadata snapshot matches and the first state carried a past or present timestamp
Server activation
Initial server/activate
What the aiosendspin 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 aiosendspin 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__aiosendspin__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": "client-initiated-metadata",
"scenario_revision": 1,
"server_exit_code": 0,
"server_impl": "aiosendspin",
"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": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"name": "aiosendspin-client",
"supported_roles": [
"metadata@v1"
]
},
"discovery_method": "registry_advertised",
"group_updates": [
{
"payload": {
"group_id": "6aeac8d7-8ec9-4231-8c4f-c651128d58bb",
"group_name": "aiosendspin-client",
"playback_state": "stopped"
},
"type": "group/update"
}
],
"implementation": "aiosendspin",
"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": 1167455528,
"timestamp_us": 1167455193
}
},
"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": "client-initiated-metadata",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I",
"server_name": "aiosendspin server",
"status": "ok",
"time_exchange": [
{
"payload": {
"client_transmitted": 1167458210
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1167458210,
"server_received": 1167458464,
"server_transmitted": 1167458791
},
"type": "server/time"
},
{
"type": "other-sent"
},
{
"payload": {
"client_transmitted": 1167664871
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1167664871,
"server_received": 1167665345,
"server_transmitted": 1167665631
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1167870660
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1167870660,
"server_received": 1167871211,
"server_transmitted": 1167871523
},
"type": "server/time"
}
]
}Server log
RAWINFO:aiosendspin.server.server:Starting Sendspin server on port 19059
INFO:aiosendspin.server.server:Sendspin server started successfully on 127.0.0.1:19059
WARNING:aiosendspin.server.server:No IP addresses available for mDNS advertising. Clients may not be able to discover this server. Consider specifying addresses manually via advertise_addresses.
{
"activation": {
"payload": {
"active_roles": [
"metadata@v1"
],
"activities": []
},
"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_advertised",
"group_updates": [
{
"payload": {
"group_id": "6aeac8d7-8ec9-4231-8c4f-c651128d58bb",
"group_name": "aiosendspin-client",
"playback_state": "stopped"
},
"type": "group/update"
}
],
"implementation": "aiosendspin",
"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": 1167455528,
"timestamp_us": 1167455193
}
},
"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": "client-initiated-metadata",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I",
"server_name": "aiosendspin server",
"status": "ok",
"time_exchange": [
{
"payload": {
"client_transmitted": 1167458210
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1167458210,
"server_received": 1167458464,
"server_transmitted": 1167458791
},
"type": "server/time"
},
{
"type": "other-sent"
},
{
"payload": {
"client_transmitted": 1167664871
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1167664871,
"server_received": 1167665345,
"server_transmitted": 1167665631
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 1167870660
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 1167870660,
"server_received": 1167871211,
"server_transmitted": 1167871523
},
"type": "server/time"
}
]
}
INFO:aiohttp.access:127.0.0.1 [21/Oct/2026:07:28:04 +0000] "GET /sendspin HTTP/1.1" 101 0 "-" "Python/3.12 aiohttp/3.14.5"
Client summary (JSON)
RAW{
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"initiator_role": "client",
"metadata": {
"first_object_state": {
"timestamp_us": 1167455193,
"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": "client-initiated-metadata",
"server": null,
"status": "ok"
}Client log
RAWINFO:aiosendspin.client.client:Connecting to Sendspin server at ws://127.0.0.1:19059/sendspin
{
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"initiator_role": "client",
"metadata": {
"first_object_state": {
"timestamp_us": 1167455193,
"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": "client-initiated-metadata",
"server": null,
"status": "ok"
}
ERROR:asyncio:Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x10a71e870>
Shared 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'...