Method sendCallback

dash/dash-renderer/src/utils/workerClient.ts:208–230

* Send a callback request to the server via the worker. * @param payload The callback payload * @returns Promise that resolves with the callback response

(payload: unknown)

     * @returns Promise that resolves with the callback response
     */
    public async sendCallback(payload: unknown): Promise<CallbackResponse> {
        // Wait for initial connection if one is in progress
        if (this.connectionPromise && !this.isConnected) {
            await this.connectionPromise;
        }

        if (!this.worker) {
            throw new Error('Worker not connected');
        }

        const requestId = `${this.rendererId}-${++this.requestCounter}`;

        return new Promise((resolve, reject) => {
            this.pendingCallbacks.set(requestId, {resolve, reject});

            this.worker!.port.postMessage({
                type: WorkerMessageType.CALLBACK_REQUEST,
                rendererId: this.rendererId,
                requestId,
                payload
            });
        });
    }

    /**
     * Send a get_props response back to the server.