DF0075: No RPC Transport On This Runtime

Message

On the shared server's WebSocket upgrade needs crossws's Node adapter, which refuses to run off Node — and SSE is disabled, so this instance advertises no RPC transport at all.

Cause

Sharing a host's node:http server (the server tier) drives the WebSocket upgrade through crossws's Node adapter, which runs only on Node. On Bun and Deno the socket falls back to the SSE endpoint — but here sse: false turned that endpoint off too, so the instance has no way for a client to reach its RPC surface.

Example

import { initHub } from '@devframes/hub/initiate'

// Running on Bun/Deno, sharing the host's node:http server:
const hub = initHub({
  server: viteHttpServer,
  sse: false, // ✗ removes the only transport left on Bun/Deno
})

Fix

Keep the SSE endpoint enabled (drop sse: false) so clients connect over it on Bun/Deno, or move the socket to a side-car — ws: { sidecar: true } binds the native WebSocket adapter (Bun.serve / Deno.serve) on its own port, where a real WebSocket works.

Source

• packages/devframe/src/node/instance-shell.ts — the shared instance shell warns this when a shared-server WebSocket binding falls back on Bun/Deno and the SSE endpoint is disabled, for both initDevframe and initHub.