Case
aiosendspin -> sendspin-dotnet
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
sendspin-dotnet
Status
Passed
PCM hashes match exactly
Inspection
Summaries, logs, and builds
Matrix result
RAW{
"case_dir": "artifacts/results/data/macos__client-initiated-pcm__aiosendspin__to__sendspin-dotnet",
"client_exit_code": 0,
"client_impl": "sendspin-dotnet",
"reason": "PCM hashes match exactly",
"scenario_id": "client-initiated-pcm",
"server_exit_code": 0,
"server_impl": "aiosendspin",
"status": "passed"
}Server summary (JSON)
RAW{
"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
},
"client": {
"active_roles": [
"player@v1"
],
"client_id": "sendspin-dotnet-client-id",
"name": "sendspin-dotnet-client",
"supported_roles": [
"player@v1"
]
},
"discovery_method": "registry_advertised",
"implementation": "aiosendspin",
"initiator_role": "client",
"peer_hello": {
"payload": {
"client_id": "sendspin-dotnet-client-id",
"device_info": {
"manufacturer": "Sendspin Conformance",
"product_name": "Conformance Dotnet Client",
"software_version": "0.1.0"
},
"name": "sendspin-dotnet-client",
"player@v1_support": {
"buffer_capacity": 2000000,
"supported_commands": [
"volume",
"mute"
],
"supported_formats": [
{
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"sample_rate": 8000
}
]
},
"supported_roles": [
"player@v1"
],
"version": 1
},
"type": "client/hello"
},
"preferred_codec": "pcm",
"role": "server",
"scenario_id": "client-initiated-pcm",
"server_id": "aiosendspin-server",
"server_name": "aiosendspin server",
"status": "ok",
"stream": {
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"codec_header": null,
"sample_rate": 8000
}
}Server log
RAWINFO:aiosendspin.server.server:Starting Sendspin server on port 18929
INFO:aiosendspin.server.server:Sendspin server started successfully on 127.0.0.1:18929
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.
{
"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
},
"client": {
"active_roles": [
"player@v1"
],
"client_id": "sendspin-dotnet-client-id",
"name": "sendspin-dotnet-client",
"supported_roles": [
"player@v1"
]
},
"discovery_method": "registry_advertised",
"implementation": "aiosendspin",
"initiator_role": "client",
"peer_hello": {
"payload": {
"client_id": "sendspin-dotnet-client-id",
"device_info": {
"manufacturer": "Sendspin Conformance",
"product_name": "Conformance Dotnet Client",
"software_version": "0.1.0"
},
"name": "sendspin-dotnet-client",
"player@v1_support": {
"buffer_capacity": 2000000,
"supported_commands": [
"volume",
"mute"
],
"supported_formats": [
{
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"sample_rate": 8000
}
]
},
"supported_roles": [
"player@v1"
],
"version": 1
},
"type": "client/hello"
},
"preferred_codec": "pcm",
"role": "server",
"scenario_id": "client-initiated-pcm",
"server_id": "aiosendspin-server",
"server_name": "aiosendspin server",
"status": "ok",
"stream": {
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"codec_header": null,
"sample_rate": 8000
}
}
INFO:aiohttp.access:127.0.0.1 [16/May/2026:05:35:04 +0000] "GET /sendspin HTTP/1.1" 101 0 "-" "-"
Client summary (JSON)
RAW{
"audio": {
"audio_chunk_count": 200,
"received_encoded_sha256": "b3481a3f75dea856a961e7842d12f8344c7147b3925f9f0b67c5445700bd4cf2",
"received_pcm_sha256": "9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e",
"received_sample_count": 40000
},
"client_id": "sendspin-dotnet-client-id",
"client_name": "sendspin-dotnet-client",
"implementation": "sendspin-dotnet",
"initiator_role": "client",
"peer_hello": {
"active_roles": [
"player@v1"
],
"connection_reason": "discovery",
"name": "aiosendspin server",
"server_id": "aiosendspin-server",
"version": 1
},
"preferred_codec": "pcm",
"reason": null,
"role": "client",
"scenario_id": "client-initiated-pcm",
"server": {
"connection_reason": "discovery",
"server_id": "aiosendspin-server",
"server_name": "aiosendspin server"
},
"status": "ok",
"stream": {
"bit_depth": 16,
"channels": 1,
"codec": "pcm",
"sample_rate": 8000
}
}Client log
RAW05:35:04 info: Sendspin.SDK.Client.SendspinClientService[0] Connecting to ws://127.0.0.1:18929/sendspin
05:35:04 info: Sendspin.SDK.Connection.SendspinConnection[0] Connecting to ws://127.0.0.1:18929/sendspin...
05:35:04 info: Sendspin.SDK.Connection.SendspinConnection[0] Connected to ws://127.0.0.1:18929/sendspin
05:35:04 info: Sendspin.SDK.Client.SendspinClientService[0] Sending client/hello: {"type":"client/hello","payload":{"client_id":"sendspin-dotnet-client-id","name":"sendspin-dotnet-client","version":1,"supported_roles":["player@v1"],"player@v1_support":{"supported_formats":[{"codec":"pcm","channels":1,"sample_rate":8000,"bit_depth":16}],"buffer_capacity":2000000,"supported_commands":["volume","mute"]},"artwork@v1_support":{"channels":[{"source":"album","format":"jpeg","media_width":256,"media_height":256}]},"device_info":{"product_name":"Conformance Dotnet Client","manufacturer":"Sendspin Conformance","software_version":"0.1.0"}}}
05:35:04 info: Sendspin.SDK.Client.SendspinClientService[0] Server hello received: aiosendspin-server (aiosendspin server), reason: discovery, roles: player@v1
05:35:04 info: Sendspin.SDK.Client.SendspinClientService[0] Sending initial client/state: {"type":"client/state","payload":{"state":"synchronized","player":{"volume":100,"muted":false}}}
05:35:04 info: Sendspin.SDK.Client.SendspinClientService[0] Handshake complete with server aiosendspin-server (aiosendspin server)
05:35:04 info: Sendspin.SDK.Client.SendspinClientService[0] Stream starting: PCM 8000Hz 1ch 16bit
05:35:10 info: Sendspin.SDK.Client.SendspinClientService[0] Stream ended: unknown
05:35:10 info: Sendspin.SDK.Connection.SendspinConnection[0] Server closed connection: NormalClosure -
{
"status": "ok",
"reason": null,
"implementation": "sendspin-dotnet",
"role": "client",
"scenario_id": "client-initiated-pcm",
"initiator_role": "client",
"preferred_codec": "pcm",
"client_name": "sendspin-dotnet-client",
"client_id": "sendspin-dotnet-client-id",
"server": {
"server_id": "aiosendspin-server",
"server_name": "aiosendspin server",
"connection_reason": "discovery"
},
"peer_hello": {
"server_id": "aiosendspin-server",
"name": "aiosendspin server",
"version": 1,
"active_roles": [
"player@v1"
],
"connection_reason": "discovery"
},
"stream": {
"codec": "pcm",
"sample_rate": 8000,
"channels": 1,
"bit_depth": 16
},
"audio": {
"received_pcm_sha256": "9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e",
"received_encoded_sha256": "b3481a3f75dea856a961e7842d12f8344c7147b3925f9f0b67c5445700bd4cf2",
"received_sample_count": 40000,
"audio_chunk_count": 200
}
}
Server build log · python-adapters · built · 0.07s
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/adapters/sendspin_jvm_client.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/detect_regressions.py'... Compiling 'scripts/merge_results.py'... Compiling 'scripts/run_all.py'... Compiling 'scripts/setup_repositories.py'... Compiling 'scripts/setup_workspace.py'...
Client build log · sendspin-dotnet-client · built · 15.75s
RAWnce/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Client/SendSpinClient.cs(890,43): warning SA1117: The parameters should all be placed on the same line or each parameter should be placed on its own line. (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1117.md) [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Client/SendSpinClient.cs(1029,9): warning S108: Either remove or fill this block of code. (https://rules.sonarsource.com/csharp/RSPEC-108) [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Client/SendSpinClient.cs(1053,13): warning S1481: Remove the unused local variable 'message'. (https://rules.sonarsource.com/csharp/RSPEC-1481) [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Client/SendSpinClient.cs(974,9): warning S108: Either remove or fill this block of code. (https://rules.sonarsource.com/csharp/RSPEC-108) [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Client/SendSpinClient.cs(1122,24): warning SA1503: Braces should not be omitted (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1503.md) [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Client/SendSpinClient.cs(1131,24): warning SA1503: Braces should not be omitted (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1503.md) [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Client/SendSpinClient.cs(986,30): warning SA1116: The parameters should begin on the line after the declaration, whenever the parameter span across multiple lines (https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1116.md) [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.OrderingRules.SA1201ElementsMustAppearInTheCorrectOrder' threw an exception of type 'System.Collections.Generic.KeyNotFoundException' with message 'The given key 'RecordStructDeclaration' was not present in the dictionary.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
CSC : warning AD0001: Analyzer 'StyleCop.Analyzers.OrderingRules.SA1201ElementsMustAppearInTheCorrectOrder' threw an exception of type 'System.Collections.Generic.KeyNotFoundException' with message 'The given key 'RecordStructDeclaration' was not present in the dictionary.'. [/Users/runner/work/conformance/conformance/repos/sendspin-dotnet/src/Sendspin.SDK/Sendspin.SDK.csproj::TargetFramework=net10.0]
/Users/runner/work/conformance/conformance/adapters/sendspin-dotnet/client/Program.cs(576,52): warning CS0067: The event 'HashingAudioPipeline.ErrorOccurred' is never used [/Users/runner/work/conformance/conformance/adapters/sendspin-dotnet/client/Conformance.SendspinDotnet.Client.csproj]
593 Warning(s)
0 Error(s)
Time Elapsed 00:00:14.31