Function createBidiWebSocketHandler

Creates a fetch-handler helper that upgrades Upgrade: websocket requests into a multiplexed bidi connection, bridged to handlers via @sudorandom/connect-bidi-core's handleMuxedBidiSocket. Get handlers from createConnectRouter(...).handlers (@connectrpc/connect).

The returned function returns the 101 upgrade Response for WebSocket upgrade requests, or null for everything else, so callers can fall through to their own Connect-over-fetch handling:

const bidiWebSocket = createBidiWebSocketHandler(handlers);

export default {
  fetch(request: Request): Response | Promise<Response> {
    return bidiWebSocket(request) ?? handleConnectFetch(request);
  },
};
Copy

One WebSocket connection carries any number of concurrent RPCs, demultiplexed by the stream ID on every frame, matching the Go and Node adapters.