Case
aiosendspin -> aiosendspin
Start the server first, then the client. The client advertises a listener, the server connects in, streams album artwork, disconnects, and the matrix compares the received bytes against the server's encoded artwork.
Server
aiosendspin
Client
aiosendspin
Status
Passed
Artwork bytes match
Inspection
Summaries, logs, and builds
Matrix result
RAW{
"case_dir": "artifacts/results/data/macos__server-initiated-artwork__aiosendspin__to__aiosendspin",
"client_exit_code": 0,
"client_impl": "aiosendspin",
"reason": "Artwork bytes match",
"scenario_id": "server-initiated-artwork",
"server_exit_code": 0,
"server_impl": "aiosendspin",
"status": "passed"
}Server summary (JSON)
RAW{
"artwork": {
"byte_count": 5533,
"channel": 0,
"encoded_sha256": "3ba7248e8b655fe0858c027053f0ef0a800d91ba87586c28f1d4cdad9f880ced",
"format": "jpeg",
"height": 256,
"source": "album",
"width": 256
},
"client": {
"active_roles": [
"artwork@v1"
],
"client_id": "aiosendspin-client-id",
"name": "aiosendspin-client",
"supported_roles": [
"artwork@v1"
]
},
"discovery_method": "registry_fallback",
"implementation": "aiosendspin",
"initiator_role": "server",
"peer_hello": {
"payload": {
"artwork@v1_support": {
"channels": [
{
"format": "jpeg",
"media_height": 256,
"media_width": 256,
"source": "album"
}
]
},
"client_id": "aiosendspin-client-id",
"name": "aiosendspin-client",
"supported_roles": [
"artwork@v1"
],
"version": 1
},
"type": "client/hello"
},
"preferred_codec": "none",
"role": "server",
"scenario_id": "server-initiated-artwork",
"server_id": "aiosendspin-server",
"server_name": "aiosendspin server",
"status": "ok"
}Server log
RAWINFO:aiosendspin.server.server:Starting Sendspin server on port 18969
INFO:aiosendspin.server.server:Sendspin server started successfully on 127.0.0.1:18969
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.
{
"artwork": {
"byte_count": 5533,
"channel": 0,
"encoded_sha256": "3ba7248e8b655fe0858c027053f0ef0a800d91ba87586c28f1d4cdad9f880ced",
"format": "jpeg",
"height": 256,
"source": "album",
"width": 256
},
"client": {
"active_roles": [
"artwork@v1"
],
"client_id": "aiosendspin-client-id",
"name": "aiosendspin-client",
"supported_roles": [
"artwork@v1"
]
},
"discovery_method": "registry_fallback",
"implementation": "aiosendspin",
"initiator_role": "server",
"peer_hello": {
"payload": {
"artwork@v1_support": {
"channels": [
{
"format": "jpeg",
"media_height": 256,
"media_width": 256,
"source": "album"
}
]
},
"client_id": "aiosendspin-client-id",
"name": "aiosendspin-client",
"supported_roles": [
"artwork@v1"
],
"version": 1
},
"type": "client/hello"
},
"preferred_codec": "none",
"role": "server",
"scenario_id": "server-initiated-artwork",
"server_id": "aiosendspin-server",
"server_name": "aiosendspin server",
"status": "ok"
}
Client summary (JSON)
RAW{
"artwork": {
"byte_count": 5533,
"channel": 0,
"received_count": 1,
"received_sha256": "3ba7248e8b655fe0858c027053f0ef0a800d91ba87586c28f1d4cdad9f880ced"
},
"client_id": "aiosendspin-client-id",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"initiator_role": "server",
"peer_hello": {
"payload": {
"active_roles": [
"artwork@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-artwork",
"server": null,
"status": "ok",
"stream": {
"channels": [
{
"format": "jpeg",
"height": 256,
"source": "album",
"width": 256
}
]
}
}Client log
RAWINFO:aiosendspin.client.listener:ClientListener started on port 19969, 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/2026:04:41:40 +0000] "GET /sendspin HTTP/1.1" 101 0 "-" "Python/3.12 aiohttp/3.13.4"
INFO:aiosendspin.client.listener:ClientListener stopped
{
"artwork": {
"byte_count": 5533,
"channel": 0,
"received_count": 1,
"received_sha256": "3ba7248e8b655fe0858c027053f0ef0a800d91ba87586c28f1d4cdad9f880ced"
},
"client_id": "aiosendspin-client-id",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"initiator_role": "server",
"peer_hello": {
"payload": {
"active_roles": [
"artwork@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-artwork",
"server": null,
"status": "ok",
"stream": {
"channels": [
{
"format": "jpeg",
"height": 256,
"source": "album",
"width": 256
}
]
}
}
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'...