Case
aiosendspin -> aiosendspin
Start the server first, then the client. The client discovers or looks up the server, initiates the WebSocket connection, advertises PCM as its only supported audio format, streams audio derived from almost_silent.flac, and compares canonical PCM hashes.
Server
aiosendspin
Client
aiosendspin
Status
Passed
PCM hashes match exactly
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 3
2 of 3
3 of 3
Inspection
Summaries, logs, and builds
Matrix result
RAW{
"case_dir": "artifacts/results/data/macos__client-initiated-pcm__aiosendspin__to__aiosendspin",
"client_exit_code": 0,
"client_impl": "aiosendspin",
"reason": "PCM hashes match exactly",
"scenario_id": "client-initiated-pcm",
"scenario_revision": 6,
"server_exit_code": 0,
"server_impl": "aiosendspin",
"status": "passed",
"unsupported": false
}Server summary (JSON)
RAW{
"activation": {
"payload": {
"active_roles": [
"player@v1"
],
"activities": []
},
"type": "server/activate"
},
"audio": {
"bit_depth": 16,
"channels": 1,
"clip_seconds": 5.0,
"duration_seconds": 5.0,
"fixture": "/Users/runner/work/conformance/conformance/repos/sendspin-cli/tests/fixtures/almost_silent.flac",
"frame_alignment_samples": null,
"frame_count": 40000,
"sample_rate": 8000,
"sent_audio_chunk_count": 200,
"sent_codec_header_sha256": null,
"sent_encoded_byte_count": 80000,
"sent_encoded_sha256": "b3481a3f75dea856a961e7842d12f8344c7147b3925f9f0b67c5445700bd4cf2",
"source_flac_sha256": "8fdda8244e318c63cd8b699fe461cd7cdddbb729327a0ba00d1bfdbe2192fe17",
"source_pcm_sha256": "9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e",
"trimmed_source_frames": 0
},
"availability_trace": [
{
"available": false,
"type": "client/state"
},
{
"available": true,
"type": "client/state"
},
{
"phase": "sending",
"roles": [
"player"
],
"type": "stream/start"
},
{
"phase": "sent",
"roles": [
"player"
],
"type": "stream/start"
}
],
"client": {
"active_roles": [
"player@v1"
],
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"name": "aiosendspin-client",
"supported_roles": [
"player@v1"
]
},
"discovery_method": "registry_advertised",
"group_updates": [
{
"payload": {
"group_id": "3deeba82-ab69-43f9-bc80-0d73a21a81c1",
"group_name": "aiosendspin-client",
"playback_state": "stopped"
},
"type": "group/update"
},
{
"payload": {
"group_id": "3deeba82-ab69-43f9-bc80-0d73a21a81c1",
"group_name": "aiosendspin-client",
"playback_state": "playing"
},
"type": "group/update"
},
{
"payload": {
"group_id": "3deeba82-ab69-43f9-bc80-0d73a21a81c1",
"group_name": "aiosendspin-client",
"playback_state": "stopped"
},
"type": "group/update"
}
],
"implementation": "aiosendspin",
"initiator_role": "client",
"peer_hello": {
"payload": {
"name": "aiosendspin-client",
"player@v1_support": {
"buffer_capacity": 2000000,
"supported_formats": [
{
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"sample_rate": 8000
},
{
"bit_depth": 16,
"channels": 2,
"codec": "pcm",
"sample_rate": 44100
},
{
"bit_depth": 16,
"channels": 2,
"codec": "pcm",
"sample_rate": 48000
}
]
},
"supported_pair_methods": {
"pairing_psk": {}
},
"supported_roles": [
"player@v1"
],
"unpaired_access": {
"enabled": true
}
},
"type": "client/hello"
},
"preferred_codec": "pcm",
"role": "server",
"scenario_id": "client-initiated-pcm",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I",
"server_name": "aiosendspin server",
"status": "ok",
"stream": {
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"codec_header": null,
"sample_rate": 8000
},
"time_exchange": [
{
"payload": {
"client_transmitted": 573434429
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 573434429,
"server_received": 573440974,
"server_transmitted": 573441643
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 573636647
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 573636647,
"server_received": 573637099,
"server_transmitted": 573637377
},
"type": "server/time"
},
{
"type": "other-sent"
},
{
"payload": {
"client_transmitted": 573653778
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 573653778,
"server_received": 573655468,
"server_transmitted": 573655574
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 573839018
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 573839018,
"server_received": 573839366,
"server_transmitted": 573839529
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 576840497
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 576840497,
"server_received": 576841493,
"server_transmitted": 576841887
},
"type": "server/time"
},
{
"type": "other-sent"
},
{
"payload": {
"client_transmitted": 579843598
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 579843598,
"server_received": 579845140,
"server_transmitted": 579845504
},
"type": "server/time"
}
]
}Server log
RAWINFO:aiosendspin.server.server:Starting Sendspin server on port 18927
INFO:aiosendspin.server.server:Sendspin server started successfully on 127.0.0.1:18927
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": [
"player@v1"
],
"activities": []
},
"type": "server/activate"
},
"audio": {
"bit_depth": 16,
"channels": 1,
"clip_seconds": 5.0,
"duration_seconds": 5.0,
"fixture": "/Users/runner/work/conformance/conformance/repos/sendspin-cli/tests/fixtures/almost_silent.flac",
"frame_alignment_samples": null,
"frame_count": 40000,
"sample_rate": 8000,
"sent_audio_chunk_count": 200,
"sent_codec_header_sha256": null,
"sent_encoded_byte_count": 80000,
"sent_encoded_sha256": "b3481a3f75dea856a961e7842d12f8344c7147b3925f9f0b67c5445700bd4cf2",
"source_flac_sha256": "8fdda8244e318c63cd8b699fe461cd7cdddbb729327a0ba00d1bfdbe2192fe17",
"source_pcm_sha256": "9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e",
"trimmed_source_frames": 0
},
"availability_trace": [
{
"available": false,
"type": "client/state"
},
{
"available": true,
"type": "client/state"
},
{
"phase": "sending",
"roles": [
"player"
],
"type": "stream/start"
},
{
"phase": "sent",
"roles": [
"player"
],
"type": "stream/start"
}
],
"client": {
"active_roles": [
"player@v1"
],
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"name": "aiosendspin-client",
"supported_roles": [
"player@v1"
]
},
"discovery_method": "registry_advertised",
"group_updates": [
{
"payload": {
"group_id": "3deeba82-ab69-43f9-bc80-0d73a21a81c1",
"group_name": "aiosendspin-client",
"playback_state": "stopped"
},
"type": "group/update"
},
{
"payload": {
"group_id": "3deeba82-ab69-43f9-bc80-0d73a21a81c1",
"group_name": "aiosendspin-client",
"playback_state": "playing"
},
"type": "group/update"
},
{
"payload": {
"group_id": "3deeba82-ab69-43f9-bc80-0d73a21a81c1",
"group_name": "aiosendspin-client",
"playback_state": "stopped"
},
"type": "group/update"
}
],
"implementation": "aiosendspin",
"initiator_role": "client",
"peer_hello": {
"payload": {
"name": "aiosendspin-client",
"player@v1_support": {
"buffer_capacity": 2000000,
"supported_formats": [
{
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"sample_rate": 8000
},
{
"bit_depth": 16,
"channels": 2,
"codec": "pcm",
"sample_rate": 44100
},
{
"bit_depth": 16,
"channels": 2,
"codec": "pcm",
"sample_rate": 48000
}
]
},
"supported_pair_methods": {
"pairing_psk": {}
},
"supported_roles": [
"player@v1"
],
"unpaired_access": {
"enabled": true
}
},
"type": "client/hello"
},
"preferred_codec": "pcm",
"role": "server",
"scenario_id": "client-initiated-pcm",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I",
"server_name": "aiosendspin server",
"status": "ok",
"stream": {
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"codec_header": null,
"sample_rate": 8000
},
"time_exchange": [
{
"payload": {
"client_transmitted": 573434429
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 573434429,
"server_received": 573440974,
"server_transmitted": 573441643
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 573636647
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 573636647,
"server_received": 573637099,
"server_transmitted": 573637377
},
"type": "server/time"
},
{
"type": "other-sent"
},
{
"payload": {
"client_transmitted": 573653778
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 573653778,
"server_received": 573655468,
"server_transmitted": 573655574
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 573839018
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 573839018,
"server_received": 573839366,
"server_transmitted": 573839529
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 576840497
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 576840497,
"server_received": 576841493,
"server_transmitted": 576841887
},
"type": "server/time"
},
{
"type": "other-sent"
},
{
"payload": {
"client_transmitted": 579843598
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 579843598,
"server_received": 579845140,
"server_transmitted": 579845504
},
"type": "server/time"
}
]
}
INFO:aiohttp.access:127.0.0.1 [21/Oct/2026:07:18:10 +0000] "GET /sendspin HTTP/1.1" 101 0 "-" "Python/3.12 aiohttp/3.14.5"
Client summary (JSON)
RAW{
"audio": {
"audio_chunk_count": 200,
"received_encoded_sha256": "b3481a3f75dea856a961e7842d12f8344c7147b3925f9f0b67c5445700bd4cf2",
"received_pcm_sha256": "9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e",
"received_sample_count": 40000
},
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"initiator_role": "client",
"peer_hello": null,
"preferred_codec": "pcm",
"role": "client",
"scenario_id": "client-initiated-pcm",
"server": null,
"status": "ok",
"stream": {
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"codec_header": null,
"sample_rate": 8000
}
}Client log
RAWINFO:aiosendspin.client.client:Connecting to Sendspin server at ws://127.0.0.1:18927/sendspin
INFO:aiosendspin.client.connection:Stream started with codec pcm
{
"audio": {
"audio_chunk_count": 200,
"received_encoded_sha256": "b3481a3f75dea856a961e7842d12f8344c7147b3925f9f0b67c5445700bd4cf2",
"received_pcm_sha256": "9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e",
"received_sample_count": 40000
},
"client_id": "rFgILqo5YfPor8oK13GTFmECUaxYcW46Q1TFv8F38Xg",
"client_name": "aiosendspin-client",
"implementation": "aiosendspin",
"initiator_role": "client",
"peer_hello": null,
"preferred_codec": "pcm",
"role": "client",
"scenario_id": "client-initiated-pcm",
"server": null,
"status": "ok",
"stream": {
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"codec_header": null,
"sample_rate": 8000
}
}
ERROR:asyncio:Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x108289be0>
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'...