Case
aiosendspin -> SendspinKit
Start the server first, then the client. The client discovers or looks up the server and initiates the WebSocket connection, the server streams album artwork, disconnects, and the matrix compares the received bytes against the server's encoded artwork.
Server
aiosendspin
Client
SendspinKit
Status
Failed
Server adapter reported: Timed out waiting for client 'SendspinKit-client'; Timed out after 40s waiting for the server adapter to exit
Inspection
Summaries, logs, and builds
Matrix result
RAW{
"case_dir": "artifacts/results/data/macos__client-initiated-artwork__aiosendspin__to__SendspinKit",
"client_exit_code": 0,
"client_impl": "SendspinKit",
"reason": "Server adapter reported: Timed out waiting for client 'SendspinKit-client'; Timed out after 40s waiting for the server adapter to exit",
"scenario_id": "client-initiated-artwork",
"scenario_revision": 1,
"server_exit_code": -9,
"server_impl": "aiosendspin",
"status": "failed",
"unsupported": false
}Server summary (JSON)
RAW{
"implementation": "aiosendspin",
"reason": "Timed out waiting for client 'SendspinKit-client'",
"role": "server",
"scenario_id": "client-initiated-artwork",
"status": "error"
}Server log
RAWINFO:aiosendspin.server.server:Starting Sendspin server on port 19076 INFO:aiosendspin.server.server:Sendspin server started successfully on 127.0.0.1:19076 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. INFO:aiohttp.access:127.0.0.1 [21/Oct/2026:07:29:00 +0000] "GET /sendspin HTTP/1.1" 101 0 "-" "-"
Client summary (JSON)
RAW{
"artwork": {
"byte_count": 0,
"channel": 0,
"received_count": 1,
"received_sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
},
"client_id": "SendspinKit-client-id",
"client_name": "SendspinKit-client",
"implementation": "SendspinKit",
"initiator_role": "client",
"peer_hello": {
"payload": {
"name": "aiosendspin server",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I"
},
"type": "server/hello"
},
"preferred_codec": "none",
"role": "client",
"scenario_id": "client-initiated-artwork",
"server": {
"name": "aiosendspin server",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I"
},
"status": "ok"
}Client log
RAW[ADAPTER] Connecting to server at ws://127.0.0.1:19076/sendspin
[ADAPTER] Connected to server: aiosendspin server
[ADAPTER] Artwork received: channel=0 bytes=0
{
"artwork" : {
"byte_count" : 0,
"channel" : 0,
"received_count" : 1,
"received_sha256" : "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
},
"client_id" : "SendspinKit-client-id",
"client_name" : "SendspinKit-client",
"implementation" : "SendspinKit",
"initiator_role" : "client",
"peer_hello" : {
"payload" : {
"name" : "aiosendspin server",
"server_id" : "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I"
},
"type" : "server\/hello"
},
"preferred_codec" : "none",
"role" : "client",
"scenario_id" : "client-initiated-artwork",
"server" : {
"name" : "aiosendspin server",
"server_id" : "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I"
},
"status" : "ok"
}
[ADAPTER] Summary written to artifacts/results/data/macos__client-initiated-artwork__aiosendspin__to__SendspinKit/client-summary.json
Server 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'...
Client build log · SendspinKit-client · built · 44.96s
RAWdspinKit DiscoveredServer.swift [73/110] Compiling SendspinKit ServerDiscovery.swift [74/110] Compiling SendspinKit Log.swift [75/110] Compiling SendspinKit ActivateMessages.swift [76/110] Compiling SendspinKit ArtworkModels.swift [77/110] Compiling SendspinKit AudioCodec.swift [78/110] Compiling SendspinKit AudioFormatSpec.swift [79/110] Compiling SendspinKit BinaryMessage.swift [80/110] Compiling SendspinKit ClientRole.swift [81/110] Compiling SendspinKit ClientStateMessages.swift [82/110] Compiling SendspinKit CommandMessages.swift [83/110] Compiling SendspinKit GoodbyeMessage.swift [84/110] Compiling SendspinKit HelloMessages.swift [85/110] Compiling SendspinKit InitMessages.swift [86/110] Compiling SendspinKit LeaveMessage.swift [87/110] Compiling SendspinKit PairingMessages.swift [88/110] Compiling SendspinKit SendspinMessage.swift [89/110] Compiling SendspinKit ServerStateMessages.swift [90/110] Compiling SendspinKit StreamMessages.swift [91/110] Compiling SendspinKit TimeMessages.swift [92/110] Compiling SendspinKit VisualizerBinaryPayload.swift [93/110] Compiling SendspinKit SaturatingArithmetic.swift [94/110] Compiling SendspinKit SendspinKit.swift [95/110] Compiling SendspinKit ClockSyncProtocol.swift [96/110] Compiling SendspinKit ClockSynchronizer.swift [97/110] Compiling SendspinKit MonotonicClock.swift [98/110] Compiling SendspinKit SendspinTimeFilter.swift [99/110] Compiling SendspinKit TimeFilterSnapshot.swift [100/110] Compiling SendspinKit FrameInbox.swift [101/110] Compiling SendspinKit NWWebSocketTransport.swift [102/110] Compiling SendspinKit NoiseChannel.swift [103/110] Compiling SendspinKit NoiseSessionEstablisher.swift [104/110] Compiling SendspinKit SendspinEncoding.swift [105/110] Compiling SendspinKit SendspinTransport.swift [106/110] Compiling SendspinKit TransportError.swift [107/110] Compiling SendspinKit WatermarkedSink.swift [108/112] Compiling ConformanceSendspinKitClient main.swift [109/112] Emitting module ConformanceSendspinKitClient [109/112] Write Objects.LinkFileList [110/112] Linking ConformanceSendspinKitClient [111/112] Applying ConformanceSendspinKitClient Build complete! (32.67s) Fetching https://github.com/sbooth/ogg-binary-xcframework.git Fetching https://github.com/sbooth/flac-binary-xcframework.git [1/23] Fetching ogg-binary-xcframework [24/55] Fetching ogg-binary-xcframework, flac-binary-xcframework Fetched https://github.com/sbooth/flac-binary-xcframework.git from cache (0.68s) Fetched https://github.com/sbooth/ogg-binary-xcframework.git from cache (0.69s) Fetching https://github.com/jedisct1/swift-sodium.git [1/5013] Fetching swift-sodium Fetched https://github.com/jedisct1/swift-sodium.git from cache (4.94s) Creating working copy for https://github.com/sbooth/ogg-binary-xcframework.git Creating working copy for https://github.com/jedisct1/swift-sodium.git Creating working copy for https://github.com/sbooth/flac-binary-xcframework.git Working copy of https://github.com/sbooth/flac-binary-xcframework.git resolved at 0.2.0 Working copy of https://github.com/sbooth/ogg-binary-xcframework.git resolved at 0.1.3 Working copy of https://github.com/jedisct1/swift-sodium.git resolved at 0.9.1 Downloading binary artifact https://github.com/sbooth/flac-binary-xcframework/releases/download/0.2.0/FLAC.xcframework.zip Downloading binary artifact https://github.com/sbooth/ogg-binary-xcframework/releases/download/0.1.3/ogg.xcframework.zip [15516/618747] Downloading https://github.com/sbooth/ogg-binary-xcframework/releases/download/0.1.3/ogg.xcframework.zip [80803/4541165] Downloading https://github.com/sbooth/ogg-binary-xcframework/releases/download/0.1.3/ogg.xcframework.zip, https://github.com/sbooth/flac-binary-xcframework/releases/download/0.2.0/FLAC.xcframework.zip Downloaded https://github.com/sbooth/ogg-binary-xcframework/releases/download/0.1.3/ogg.xcframework.zip (0.52s) Downloaded https://github.com/sbooth/flac-binary-xcframework/releases/download/0.2.0/FLAC.xcframework.zip (0.71s)