createDurableObjectBrokerTransport

The createDurableObjectBrokerTransport function creates a transport for brokering WebSocket messages within a Cloudflare Durable Object.

createDurableObjectBrokerTransport(options: DurableObjectBrokerTransportOptions): DurableObjectBrokerTransport

This transport enables path-based message isolation, where clients on different paths cannot communicate with each other, even though they're all connected to the same Durable Object instance. It's commonly used with BrokerOnlyDurableObject to create stateless broker servers.

class MyBrokerDurableObject extends SyncletDurableObject {
  getCreateComponents() {
    return {
      transport: createDurableObjectBrokerTransport({
        durableObject: this,
        path: null, // Broker-only mode
        brokerPaths: /^room-[a-z0-9]+$/, // Only accept specific room paths
      }),
    };
  }
}