A video generation runs a single ComfyUI prompt for minutes, and the media
card only advanced after each prompt finished, so it sat still until the
clip was done.
The ComfyUI provider now follows ComfyUI's standard /ws stream while its
prompts run and maps step progress to the job's overall fraction across
all prompts: never backwards, and short of each prompt's share until its
outputs are downloaded. The history poll stays the source of truth for
completion and errors; a socket that cannot connect, drops, or stays
silent leaves generation exactly as before, and it is closed on finish,
failure, cancel and abort. Each generation uses its own client id, so
concurrent jobs do not take over each other's messages.
The socket goes through a new createOpenAiCompatibleWebSocket next to the
guarded fetch: same URL and key checks, same resolved-address lookup,
ws/wss derived from http/https, the same Authorization header, a message
size cap, and a hard drop when a server never finishes the closing
handshake. It uses the undici package's WebSocket, so no dependency was
added. A provider given a replaced fetch without a matching socket opens
none, so tests and emulators never reach the network.
The ComfyUI emulator now serves the websocket and reports progress for
running prompts; provider, guard and conformance tests cover ordering,
multi-prompt mapping, unavailable and failing sockets, stray messages,
closing on cancel, and the address checks against a loopback server.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MRtGG9ARfqqhma3t85Ro2u
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