laravel-webrtc/config/webrtc.php

<?php

use Blax\WebRtc\Media\NullMediaEngine;

return [
    /*
    |--------------------------------------------------------------------------
    | Signaling bind
    |--------------------------------------------------------------------------
    | Where the signaling server (on the shared ReactPHP kernel) listens. For
    | browser clients you will typically front this with the laravel-websockets
    | WS transport instead; this raw endpoint drives + tests the media engine.
    */
    'host' => env('WEBRTC_HOST', '127.0.0.1'),
    'port' => (int) env('WEBRTC_PORT', 8090),

    // ReactPHP TLS context; leave both unset for plain TCP.
    'tls' => array_filter([
        'local_cert' => env('WEBRTC_TLS_CERT'),
        'local_pk' => env('WEBRTC_TLS_KEY'),
    ]),

    /*
    |--------------------------------------------------------------------------
    | Media engine
    |--------------------------------------------------------------------------
    | The backend that terminates media (ICE/DTLS/SRTP/RTP/Opus), records, and
    | bridges to external realtime providers. NullMediaEngine = signaling only;
    | Str0mMediaEngine requires the blax_webrtc Rust extension (see rust/).
    */
    'media_engine' => env('WEBRTC_MEDIA_ENGINE', NullMediaEngine::class),

    /*
    |--------------------------------------------------------------------------
    | Recording
    |--------------------------------------------------------------------------
    | Where server-side call recordings are written (attach them to your own
    | transmission rows afterwards).
    */
    'recording' => [
        'disk' => env('WEBRTC_RECORDING_DISK', 'local'),
        'path' => env('WEBRTC_RECORDING_PATH', 'webrtc/recordings'),
    ],

    /*
    |--------------------------------------------------------------------------
    | ICE servers (STUN/TURN) advertised to browsers
    |--------------------------------------------------------------------------
    */
    'ice_servers' => [
        // ['urls' => 'stun:stun.l.google.com:19302'],
        // ['urls' => 'turn:turn.example.com:3478', 'username' => '...', 'credential' => '...'],
    ],

    /*
    |--------------------------------------------------------------------------
    | External realtime bridge (provider hidden from the browser)
    |--------------------------------------------------------------------------
    | The media engine dials these; the browser only ever talks to us, so the AI
    | provider is invisible and the model is swappable server-side.
    */
    'bridge' => [
        'openai' => [
            'model' => env('WEBRTC_OPENAI_MODEL', 'gpt-realtime'),
            'api_key' => env('OPENAI_API_KEY'),
        ],
    ],
];