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voice-call: document Twilio coupling and future adapter refactor path

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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Forrest Blount 2026-03-11 21:28:47 +00:00
parent fa267d6966
commit cc0077e712
1 changed files with 8 additions and 0 deletions
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8
extensions/voice-call/src/webhook/realtime-handler.ts
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@ -23,6 +23,14 @@ export type ToolHandlerFn = (args: unknown, callId: string) => Promise<unknown>;
* - Return TwiML <Connect><Stream> payload for the initial HTTP webhook
* - Register each call with CallManager (appears in voice status/history)
* - Route tool calls to registered handlers (Phase 5 tool framework)
*
* Provider coupling: this class currently speaks the Twilio Media Streams
* WebSocket protocol directly (μ-law audio, streamSid/callSid, start/media/
* mark/stop events) and emits Twilio TwiML. The OpenAI bridge itself is
* provider-agnostic. If a second provider needs realtime support, the right
* refactor is to extract a RealtimeMediaAdapter interface (buildStreamPayload +
* handleWebSocketUpgrade + MediaStreamCallbacks) so the bridge and call-manager
* wiring can be reused without duplicating the OpenAI session logic.
*/
/** How long (ms) a stream token remains valid after TwiML is issued. */
const STREAM_TOKEN_TTL_MS = 30_000;