INNER CODE UNIT · TypeScript

createServerWebSocketServer

im4codes/imcodes · server/src/index.ts:356

export function createServerWebSocketServer(): WebSocketServer {
  return new WebSocketServer({
    noServer: true,
    maxPayload: SERVER_WS_MAX_PAYLOAD_BYTES,
  });
}

export function setupWebSocketUpgrade(server: import('node:http').Server, env: Env) {
  const wss = createServerWebSocketServer();
  // Compile trust function once — same proxy-addr library used by HTTP middleware
  const wsTrust = proxyAddr.compile(
    env.TRUSTED_PROXIES
      ? env.TRUSTED_PROXIES.split(',').map((s) => s.trim()).filter(Boolean)
      : [],
  );

  server.on('upgrade', async (req: IncomingMessage, socket, head) => {
    const url = new URL(req.url ?? '/', 'http://localhost');

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