Case
aiosendspin -> 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.
Server
aiosendspin
Client
aiosendspin
Status
Passed
Metadata snapshot matches
Inspection
Summaries, logs, and builds
Matrix result
RAW{
"case_dir": "artifacts/results/data/macos__server-initiated-metadata__aiosendspin__to__aiosendspin",
"client_exit_code": 0,
"client_impl": "aiosendspin",
"reason": "Metadata snapshot matches",
"scenario_id": "server-initiated-metadata",
"server_exit_code": 0,
"server_impl": "aiosendspin",
"status": "passed"
}Server summary (JSON)
RAW{
"client": {
"active_roles": [
"metadata@v1"
],
"client_id": "aiosendspin-client-id",
"name": "aiosendspin-client",
"supported_roles": [
"metadata@v1"
]
},
"discovery_method": "registry_fallback",
"implementation": "aiosendspin",
"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
},
"repeat": "all",
"shuffle": false,
"title": "Almost Silent",
"track": 1,
"year": 2026
}
},
"peer_hello": {
"payload": {
"client_id": "aiosendspin-client-id",
"name": "aiosendspin-client",
"supported_roles": [
"metadata@v1"
],
"version": 1
},
"type": "client/hello"
},
"preferred_codec": "none",
"role": "server",
"scenario_id": "server-initiated-metadata",
"server_id": "aiosendspin-server",
"server_name": "aiosendspin server",
"status": "ok"
}Server log
RAWINFO:aiosendspin.server.server:Starting Sendspin server on port 18955
INFO:aiosendspin.server.server:Sendspin server started successfully on 127.0.0.1:18955
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.
{
"client": {
"active_roles": [
"metadata@v1"
],
"client_id": "aiosendspin-client-id",
"name": "aiosendspin-client",
"supported_roles": [
"metadata@v1"
]
},
"discovery_method": "registry_fallback",
"implementation": "aiosendspin",
"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
},
"repeat": "all",
"shuffle": false,
"title": "Almost Silent",
"track": 1,
"year": 2026
}
},
"peer_hello": {
"payload": {
"client_id": "aiosendspin-client-id",
"name": "aiosendspin-client",
"supported_roles": [
"metadata@v1"
],
"version": 1
},
"type": "client/hello"
},
"preferred_codec": "none",
"role": "server",
"scenario_id": "server-initiated-metadata",
"server_id": "aiosendspin-server",
"server_name": "aiosendspin server",
"status": "ok"
}
Client summary (JSON)
RAW{
"client_id": "aiosendspin-client-id",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"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
},
"repeat": "all",
"shuffle": false,
"title": "Almost Silent",
"track": 1,
"year": 2026
},
"update_count": 2
},
"peer_hello": {
"payload": {
"active_roles": [
"metadata@v1"
],
"connection_reason": "playback",
"name": "aiosendspin server",
"server_id": "aiosendspin-server",
"version": 1
},
"type": "server/hello"
},
"preferred_codec": "none",
"role": "client",
"scenario_id": "server-initiated-metadata",
"server": null,
"status": "ok"
}Client log
RAWINFO:aiosendspin.client.listener:ClientListener started on port 19955, path /sendspin
INFO:aiosendspin.client.client:Connected to server 'aiosendspin server' (aiosendspin-server) version 1
INFO:aiosendspin.client.client:Handshake with server complete
INFO:aiohttp.access:127.0.0.1 [29/Mar/2026:04:41:36 +0000] "GET /sendspin HTTP/1.1" 101 0 "-" "Python/3.12 aiohttp/3.13.4"
INFO:aiosendspin.client.listener:ClientListener stopped
{
"client_id": "aiosendspin-client-id",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"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
},
"repeat": "all",
"shuffle": false,
"title": "Almost Silent",
"track": 1,
"year": 2026
},
"update_count": 2
},
"peer_hello": {
"payload": {
"active_roles": [
"metadata@v1"
],
"connection_reason": "playback",
"name": "aiosendspin server",
"server_id": "aiosendspin-server",
"version": 1
},
"type": "server/hello"
},
"preferred_codec": "none",
"role": "client",
"scenario_id": "server-initiated-metadata",
"server": null,
"status": "ok"
}
Shared build log · python-adapters · built · 0.04s
RAWListing 'src'... Listing 'src/conformance'... Listing 'src/conformance/adapters'... Compiling 'src/conformance/adapters/__init__.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/merge.py'... Compiling 'src/conformance/registry.py'... Listing 'src/sendspin_conformance.egg-info'... Listing 'scripts'... Compiling 'scripts/merge_results.py'... Compiling 'scripts/run_all.py'... Compiling 'scripts/setup_repositories.py'... Compiling 'scripts/setup_workspace.py'...