Case

aiosendspin -> sendspin-js

Start the server first, then the client. The client advertises a listener and PCM as its only supported audio format, the server connects in, streams audio derived from almost_silent.flac, disconnects, and the matrix compares canonical PCM hashes.

Server

aiosendspin

Client

sendspin-js

Status

Failed

PCM hash mismatch: server=9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e client=d601ec75c603f35c4b7ae8583e3a93828e9ad076a74f032e26a3a96385d921f9

Inspection

Summaries, logs, and builds

Matrix result

RAW

{
  "case_dir": "artifacts/results/data/macos__server-initiated-pcm__aiosendspin__to__sendspin-js",
  "client_exit_code": 0,
  "client_impl": "sendspin-js",
  "reason": "PCM hash mismatch: server=9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e client=d601ec75c603f35c4b7ae8583e3a93828e9ad076a74f032e26a3a96385d921f9",
  "scenario_id": "server-initiated-pcm",
  "server_exit_code": 0,
  "server_impl": "aiosendspin",
  "status": "failed"
}

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": 199,
    "sent_codec_header_sha256": null,
    "sent_encoded_byte_count": 955200,
    "sent_encoded_sha256": "fde28f16c1fe19351b91eb3f21a5d6cbc7ca4e5c952ce3063b377a264e28b158",
    "source_flac_sha256": "8fdda8244e318c63cd8b699fe461cd7cdddbb729327a0ba00d1bfdbe2192fe17",
    "source_pcm_sha256": "9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e",
    "trimmed_source_frames": 0
  },
  "client": {
    "active_roles": [
      "player@v1",
      "controller@v1",
      "metadata@v1"
    ],
    "client_id": "sendspin-js-client-id",
    "name": "sendspin-js-client",
    "supported_roles": [
      "player@v1",
      "controller@v1",
      "metadata@v1"
    ]
  },
  "discovery_method": "registry_fallback",
  "implementation": "aiosendspin",
  "initiator_role": "server",
  "peer_hello": {
    "payload": {
      "client_id": "sendspin-js-client-id",
      "device_info": {
        "manufacturer": "Unknown",
        "product_name": "Web Browser",
        "software_version": "Node.js/22"
      },
      "name": "sendspin-js-client",
      "player@v1_support": {
        "buffer_capacity": 5242880,
        "supported_commands": [
          "volume",
          "mute"
        ],
        "supported_formats": [
          {
            "bit_depth": 16,
            "channels": 2,
            "codec": "pcm",
            "sample_rate": 48000
          },
          {
            "bit_depth": 16,
            "channels": 2,
            "codec": "pcm",
            "sample_rate": 44100
          }
        ]
      },
      "supported_roles": [
        "player@v1",
        "controller@v1",
        "metadata@v1"
      ],
      "version": 1
    },
    "type": "client/hello"
  },
  "preferred_codec": "pcm",
  "role": "server",
  "scenario_id": "server-initiated-pcm",
  "server_id": "aiosendspin-server",
  "server_name": "aiosendspin server",
  "status": "ok",
  "stream": {
    "bit_depth": 16,
    "channels": 2,
    "codec": "pcm",
    "codec_header": null,
    "sample_rate": 48000
  }
}

Server log

RAW

INFO:aiosendspin.server.server:Starting Sendspin server on port 18947
INFO:aiosendspin.server.server:Sendspin server started successfully on 127.0.0.1:18947
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": 199,
    "sent_codec_header_sha256": null,
    "sent_encoded_byte_count": 955200,
    "sent_encoded_sha256": "fde28f16c1fe19351b91eb3f21a5d6cbc7ca4e5c952ce3063b377a264e28b158",
    "source_flac_sha256": "8fdda8244e318c63cd8b699fe461cd7cdddbb729327a0ba00d1bfdbe2192fe17",
    "source_pcm_sha256": "9d447b5b270bc99b45bb9a616937e436c941ca56c477f9cbe16a93275a6b059e",
    "trimmed_source_frames": 0
  },
  "client": {
    "active_roles": [
      "player@v1",
      "controller@v1",
      "metadata@v1"
    ],
    "client_id": "sendspin-js-client-id",
    "name": "sendspin-js-client",
    "supported_roles": [
      "player@v1",
      "controller@v1",
      "metadata@v1"
    ]
  },
  "discovery_method": "registry_fallback",
  "implementation": "aiosendspin",
  "initiator_role": "server",
  "peer_hello": {
    "payload": {
      "client_id": "sendspin-js-client-id",
      "device_info": {
        "manufacturer": "Unknown",
        "product_name": "Web Browser",
        "software_version": "Node.js/22"
      },
      "name": "sendspin-js-client",
      "player@v1_support": {
        "buffer_capacity": 5242880,
        "supported_commands": [
          "volume",
          "mute"
        ],
        "supported_formats": [
          {
            "bit_depth": 16,
            "channels": 2,
            "codec": "pcm",
            "sample_rate": 48000
          },
          {
            "bit_depth": 16,
            "channels": 2,
            "codec": "pcm",
            "sample_rate": 44100
          }
        ]
      },
      "supported_roles": [
        "player@v1",
        "controller@v1",
        "metadata@v1"
      ],
      "version": 1
    },
    "type": "client/hello"
  },
  "preferred_codec": "pcm",
  "role": "server",
  "scenario_id": "server-initiated-pcm",
  "server_id": "aiosendspin-server",
  "server_name": "aiosendspin server",
  "status": "ok",
  "stream": {
    "bit_depth": 16,
    "channels": 2,
    "codec": "pcm",
    "codec_header": null,
    "sample_rate": 48000
  }
}

Client summary (JSON)

RAW

{
  "audio": {
    "audio_chunk_count": 199,
    "received_encoded_sha256": null,
    "received_pcm_sha256": "d601ec75c603f35c4b7ae8583e3a93828e9ad076a74f032e26a3a96385d921f9",
    "received_sample_count": 477600
  },
  "client_id": "sendspin-js-client-id",
  "client_name": "sendspin-js-client",
  "implementation": "sendspin-js",
  "initiator_role": "server",
  "peer_hello": {
    "payload": {
      "active_roles": [
        "player@v1",
        "controller@v1",
        "metadata@v1"
      ],
      "connection_reason": "playback",
      "name": "aiosendspin server",
      "server_id": "aiosendspin-server",
      "version": 1
    },
    "type": "server/hello"
  },
  "preferred_codec": "pcm",
  "role": "client",
  "scenario_id": "server-initiated-pcm",
  "server": {
    "active_roles": [
      "player@v1",
      "controller@v1",
      "metadata@v1"
    ],
    "connection_reason": "playback",
    "name": "aiosendspin server",
    "server_id": "aiosendspin-server",
    "version": 1
  },
  "status": "ok",
  "stream": {
    "bit_depth": 16,
    "channels": 2,
    "codec": "pcm",
    "sample_rate": 48000
  }
}

Client log

RAW

Sendspin: Adopted open WebSocket
Sendspin: Using player_id: sendspin-js-client-id
[Opus] Native decoder not available, falling back to FLAC/PCM
Sendspin: Connected to server
Sendspin: Stream started { codec: 'pcm', sample_rate: 48000, channels: 2, bit_depth: 16 }
Sendspin: Codec=PCM, SampleRate=48000Hz, Channels=2, BitDepth=16bit
Sendspin: Stream ended
Sendspin: WebSocket disconnected
Sendspin: Connection closed
{
  "status": "ok",
  "implementation": "sendspin-js",
  "role": "client",
  "scenario_id": "server-initiated-pcm",
  "initiator_role": "server",
  "preferred_codec": "pcm",
  "client_id": "sendspin-js-client-id",
  "client_name": "sendspin-js-client",
  "peer_hello": {
    "payload": {
      "server_id": "aiosendspin-server",
      "name": "aiosendspin server",
      "version": 1,
      "active_roles": [
        "player@v1",
        "controller@v1",
        "metadata@v1"
      ],
      "connection_reason": "playback"
    },
    "type": "server/hello"
  },
  "server": {
    "server_id": "aiosendspin-server",
    "name": "aiosendspin server",
    "version": 1,
    "active_roles": [
      "player@v1",
      "controller@v1",
      "metadata@v1"
    ],
    "connection_reason": "playback"
  },
  "stream": {
    "codec": "pcm",
    "sample_rate": 48000,
    "channels": 2,
    "bit_depth": 16
  },
  "audio": {
    "audio_chunk_count": 199,
    "received_encoded_sha256": null,
    "received_pcm_sha256": "d601ec75c603f35c4b7ae8583e3a93828e9ad076a74f032e26a3a96385d921f9",
    "received_sample_count": 477600
  }
}