Case
aiosendspin -> sendspin-cpp
Start the server first, then the client. The client advertises a listener, the server connects in, sends a metadata state update, disconnects, and the matrix compares a normalized metadata snapshot and checks that the first state carrying a metadata object bore a past or present timestamp.
Server
aiosendspin
Client
sendspin-cpp
Status
Passed
Metadata snapshot matches
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 1
Inspection
Summaries, logs, and builds
Matrix result
RAW{
"case_dir": "artifacts/results/data/macos__server-initiated-metadata__aiosendspin__to__sendspin-cpp",
"client_exit_code": 0,
"client_impl": "sendspin-cpp",
"reason": "Metadata snapshot matches",
"scenario_id": "server-initiated-metadata",
"scenario_revision": 5,
"server_exit_code": 0,
"server_impl": "aiosendspin",
"status": "passed",
"unsupported": false
}Server summary (JSON)
RAW{
"activation": {
"payload": {
"active_roles": [
"metadata@v1"
],
"activities": [
"playback"
]
},
"type": "server/activate"
},
"availability_trace": [
{
"available": true,
"type": "client/state"
}
],
"client": {
"active_roles": [
"metadata@v1"
],
"client_id": "twe_S_I6zD4b1ixC2ZrbIs6p3ajY19Ngn6yHwDNjXUo",
"name": "sendspin-cpp-client",
"supported_roles": [
"metadata@v1"
]
},
"discovery_method": "registry_fallback",
"group_updates": [
{
"payload": {
"group_id": "16232ccd-f079-46ad-a56b-4490ca14a74d",
"group_name": "sendspin-cpp-client",
"playback_state": "stopped"
},
"type": "group/update"
}
],
"implementation": "aiosendspin",
"initiator_role": "server",
"metadata": {
"expected": {
"album": "Protocol Fixtures",
"album_artist": "Sendspin",
"artist": "Sendspin Conformance",
"artwork_url": "https://example.invalid/almost-silent.jpg",
"progress": {
"playback_speed": 1000,
"track_duration": 180000,
"track_progress": 12000
},
"title": "Almost Silent",
"track": 1,
"year": 2026
},
"first_state_sent": {
"bound_us": 761319227,
"timestamp_us": 761318774
}
},
"peer_hello": {
"payload": {
"device_info": {
"mac_address": "9e:1f:65:cd:d6:b8",
"manufacturer": "Sendspin Conformance",
"product_name": "sendspin-cpp Conformance Client",
"software_version": "0.2.0"
},
"name": "sendspin-cpp-client",
"supported_pair_methods": {
"pairing_psk": {}
},
"supported_roles": [
"metadata@v1"
],
"unpaired_access": {
"enabled": true
}
},
"type": "client/hello"
},
"preferred_codec": "none",
"role": "server",
"scenario_id": "server-initiated-metadata",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I",
"server_name": "aiosendspin server",
"status": "ok",
"time_exchange": [
{
"payload": {
"client_transmitted": 761383078
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761383078,
"server_received": 761383375,
"server_transmitted": 761383846
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384012
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384012,
"server_received": 761384108,
"server_transmitted": 761384200
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384288
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384288,
"server_received": 761384396,
"server_transmitted": 761384487
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384590
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384590,
"server_received": 761384666,
"server_transmitted": 761384730
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384802
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384802,
"server_received": 761384871,
"server_transmitted": 761384921
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384989
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384989,
"server_received": 761385051,
"server_transmitted": 761385098
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761385184
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761385184,
"server_received": 761385241,
"server_transmitted": 761385315
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761385378
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761385378,
"server_received": 761385472,
"server_transmitted": 761385557
},
"type": "server/time"
},
{
"type": "other-sent"
}
]
}Server log
RAWINFO:aiosendspin.server.server:Starting Sendspin server on port 18964
INFO:aiosendspin.server.server:Sendspin server started successfully on 127.0.0.1:18964
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": [
"metadata@v1"
],
"activities": [
"playback"
]
},
"type": "server/activate"
},
"availability_trace": [
{
"available": true,
"type": "client/state"
}
],
"client": {
"active_roles": [
"metadata@v1"
],
"client_id": "twe_S_I6zD4b1ixC2ZrbIs6p3ajY19Ngn6yHwDNjXUo",
"name": "sendspin-cpp-client",
"supported_roles": [
"metadata@v1"
]
},
"discovery_method": "registry_fallback",
"group_updates": [
{
"payload": {
"group_id": "16232ccd-f079-46ad-a56b-4490ca14a74d",
"group_name": "sendspin-cpp-client",
"playback_state": "stopped"
},
"type": "group/update"
}
],
"implementation": "aiosendspin",
"initiator_role": "server",
"metadata": {
"expected": {
"album": "Protocol Fixtures",
"album_artist": "Sendspin",
"artist": "Sendspin Conformance",
"artwork_url": "https://example.invalid/almost-silent.jpg",
"progress": {
"playback_speed": 1000,
"track_duration": 180000,
"track_progress": 12000
},
"title": "Almost Silent",
"track": 1,
"year": 2026
},
"first_state_sent": {
"bound_us": 761319227,
"timestamp_us": 761318774
}
},
"peer_hello": {
"payload": {
"device_info": {
"mac_address": "9e:1f:65:cd:d6:b8",
"manufacturer": "Sendspin Conformance",
"product_name": "sendspin-cpp Conformance Client",
"software_version": "0.2.0"
},
"name": "sendspin-cpp-client",
"supported_pair_methods": {
"pairing_psk": {}
},
"supported_roles": [
"metadata@v1"
],
"unpaired_access": {
"enabled": true
}
},
"type": "client/hello"
},
"preferred_codec": "none",
"role": "server",
"scenario_id": "server-initiated-metadata",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I",
"server_name": "aiosendspin server",
"status": "ok",
"time_exchange": [
{
"payload": {
"client_transmitted": 761383078
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761383078,
"server_received": 761383375,
"server_transmitted": 761383846
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384012
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384012,
"server_received": 761384108,
"server_transmitted": 761384200
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384288
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384288,
"server_received": 761384396,
"server_transmitted": 761384487
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384590
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384590,
"server_received": 761384666,
"server_transmitted": 761384730
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384802
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384802,
"server_received": 761384871,
"server_transmitted": 761384921
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761384989
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761384989,
"server_received": 761385051,
"server_transmitted": 761385098
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761385184
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761385184,
"server_received": 761385241,
"server_transmitted": 761385315
},
"type": "server/time"
},
{
"payload": {
"client_transmitted": 761385378
},
"type": "client/time"
},
{
"payload": {
"client_transmitted": 761385378,
"server_received": 761385472,
"server_transmitted": 761385557
},
"type": "server/time"
},
{
"type": "other-sent"
}
]
}
Client summary (JSON)
RAW{
"client_id": "twe_S_I6zD4b1ixC2ZrbIs6p3ajY19Ngn6yHwDNjXUo",
"client_name": "sendspin-cpp-client",
"implementation": "sendspin-cpp",
"initiator_role": "server",
"metadata": {
"received": {
"album": "Protocol Fixtures",
"album_artist": "Sendspin",
"artist": "Sendspin Conformance",
"artwork_url": "https://example.invalid/almost-silent.jpg",
"progress": {
"playback_speed": 1000,
"track_duration": 180000,
"track_progress": 12000
},
"title": "Almost Silent",
"track": 1,
"year": 2026
},
"update_count": 2
},
"peer_hello": {
"payload": {
"name": "aiosendspin server",
"source@v1_support": {
"supported_codecs": [
"flac",
"pcm",
"opus"
]
}
},
"type": "server/hello"
},
"preferred_codec": "none",
"reason": null,
"role": "client",
"scenario_id": "server-initiated-metadata",
"server": {
"connection_reason": null,
"name": "aiosendspin server",
"server_id": "dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I",
"version": 1
},
"status": "ok"
}Client log
RAWI sendspin.record_store: Provisioned Sendspin Pairing PSK: 0XCsWN0HDO1zzbYu4Y1daI5hyVJ_9OC6bPmZCd4vASA
I sendspin.client: Generated ephemeral static keypair (no provider); client_id=twe_S_I6zD4b1ixC2ZrbIs6p3ajY19Ngn6yHwDNjXUo
I sendspin.ws_server: Starting server on port: 19964 (max connections: 4)
I sendspin.noise_handshake: Noise handshake complete: server_id=dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I psk_category=2
I sendspin.connection: Noise transport active (server_id=dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I, psk_category=2)
I sendspin.conn_mgr: Connection admitted: server_id=dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I
I sendspin.conn_mgr: Admitted connection lost
{"status":"ok","reason":null,"implementation":"sendspin-cpp","role":"client","scenario_id":"server-initiated-metadata","initiator_role":"server","preferred_codec":"none","client_name":"sendspin-cpp-client","client_id":"twe_S_I6zD4b1ixC2ZrbIs6p3ajY19Ngn6yHwDNjXUo","server":{"server_id":"dsIlKLOY1OqUfE4ig1m3id0r6yr2D5_3R-FJLQZI30I","name":"aiosendspin server","version":1,"connection_reason":null},"peer_hello":{"payload":{"name":"aiosendspin server","source@v1_support":{"supported_codecs":["flac","pcm","opus"]}},"type":"server/hello"},"metadata":{"update_count":2,"received":{"title":"Almost Silent","artist":"Sendspin Conformance","album_artist":"Sendspin","album":"Protocol Fixtures","artwork_url":"https://example.invalid/almost-silent.jpg","year":2026,"track":1,"progress":{"track_progress":12000,"track_duration":180000,"playback_speed":1000}}}}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 · sendspin-cpp-client · built · 63.96s
RAW/IXWebSocketPerMessageDeflateCodec.cpp:194:60: warning: unused parameter 'clientNoContextTakeOver' [-Wunused-parameter]
194 | bool clientNoContextTakeOver)
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp:209:80: warning: unused parameter 'in' [-Wunused-parameter]
209 | bool WebSocketPerMessageDeflateDecompressor::decompress(const std::string& in, std::string& out)
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp:209:97: warning: unused parameter 'out' [-Wunused-parameter]
209 | bool WebSocketPerMessageDeflateDecompressor::decompress(const std::string& in, std::string& out)
| ^
In file included from /Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp:7:
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h:39:13: warning: private field '_flush' is not used [-Wunused-private-field]
39 | int _flush;
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h:40:44: warning: private field '_compressBuffer' is not used [-Wunused-private-field]
40 | std::array<unsigned char, 1 << 14> _compressBuffer;
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h:57:13: warning: private field '_flush' is not used [-Wunused-private-field]
57 | int _flush;
| ^
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h:58:44: warning: private field '_compressBuffer' is not used [-Wunused-private-field]
58 | std::array<unsigned char, 1 << 14> _compressBuffer;
| ^
12 warnings generated.
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp:17:26: warning: unused variable 'minServerMaxWindowBits' [-Wunused-const-variable]
17 | static const uint8_t minServerMaxWindowBits = 8;
| ^~~~~~~~~~~~~~~~~~~~~~
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp:18:26: warning: unused variable 'maxServerMaxWindowBits' [-Wunused-const-variable]
18 | static const uint8_t maxServerMaxWindowBits = 15;
| ^~~~~~~~~~~~~~~~~~~~~~
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp:21:26: warning: unused variable 'minClientMaxWindowBits' [-Wunused-const-variable]
21 | static const uint8_t minClientMaxWindowBits = 8;
| ^~~~~~~~~~~~~~~~~~~~~~
/Users/runner/work/conformance/conformance/adapters/sendspin-cpp/client/build/_deps/ixwebsocket-src/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp:22:26: warning: unused variable 'maxClientMaxWindowBits' [-Wunused-const-variable]
22 | static const uint8_t maxClientMaxWindowBits = 15;
| ^~~~~~~~~~~~~~~~~~~~~~
4 warnings generated.