T
TanStack•8mo ago
optimistic-gold

Setting Bun server options?

How can I set the server options for the bun adapter? I need to change the idleTimeout because I have a server fn that takes longer than 10s to run which keeps timing out. I tracked this down to Nitro but can't find any documentation or examples there of how to actually set options
4 Replies
xenial-black
xenial-black•8mo ago
how does it work with pure nitro?
optimistic-gold
optimistic-goldOP•8mo ago
Not sure, I posted a question on their Github discussions there. I don't see anything in the docs that indicates how to do this.
xenial-black
xenial-black•8mo ago
ok we need to know this since we are "just" wrapping nitro
optimistic-gold
optimistic-goldOP•8mo ago
I was able to figure this out, I cloned the Bun nitro preset with an idleTimeout: 
import "#nitro-internal-pollyfills";
import { useNitroApp } from "nitropack/runtime";

import wsAdapter from "crossws/adapters/bun";

const nitroApp = useNitroApp();

const ws =
  import.meta._websocket ? wsAdapter(nitroApp.h3App.websocket) : undefined;

// @ts-expect-error
const server = Bun.serve({
  port: process.env.NITRO_PORT || process.env.PORT || 3000,
  websocket: import.meta._websocket ? ws!.websocket : (undefined as any),
  idleTimeout: 255,

  async fetch(req: Request, server: any) {
    // https://crossws.unjs.io/adapters/bun
    if (import.meta._websocket && req.headers.get("upgrade") === "websocket") {
      return ws!.handleUpgrade(req, server);
    }

    const url = new URL(req.url);

    let body;
    if (req.body) {
      body = await req.arrayBuffer();
    }

    return nitroApp.localFetch(url.pathname + url.search, {
      host: url.hostname,
      protocol: url.protocol,
      headers: req.headers,
      method: req.method,
      redirect: req.redirect,
      body,
    });
  },
});

console.log(`Listening on http://localhost:${server.port}...`);
import "#nitro-internal-pollyfills";
import { useNitroApp } from "nitropack/runtime";

import wsAdapter from "crossws/adapters/bun";

const nitroApp = useNitroApp();

const ws =
  import.meta._websocket ? wsAdapter(nitroApp.h3App.websocket) : undefined;

// @ts-expect-error
const server = Bun.serve({
  port: process.env.NITRO_PORT || process.env.PORT || 3000,
  websocket: import.meta._websocket ? ws!.websocket : (undefined as any),
  idleTimeout: 255,

  async fetch(req: Request, server: any) {
    // https://crossws.unjs.io/adapters/bun
    if (import.meta._websocket && req.headers.get("upgrade") === "websocket") {
      return ws!.handleUpgrade(req, server);
    }

    const url = new URL(req.url);

    let body;
    if (req.body) {
      body = await req.arrayBuffer();
    }

    return nitroApp.localFetch(url.pathname + url.search, {
      host: url.hostname,
      protocol: url.protocol,
      headers: req.headers,
      method: req.method,
      redirect: req.redirect,
      body,
    });
  },
});

console.log(`Listening on http://localhost:${server.port}...`);
Then set it as the server entry point in app.config.ts: 
export default defineConfig({
  server: {
    entry: "./bun.nitro.ts",
  },
  ...
});
export default defineConfig({
  server: {
    entry: "./bun.nitro.ts",
  },
  ...
});

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