---
title: Bulk origin override
description: Resolve requests to your domain to a set of proxy third-party origin URLs.
image: https://edgetunnel-b2h.pages.dev/dev-products-preview.png
---

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# Bulk origin override

Resolve requests to your domain to a set of proxy third-party origin URLs.

* [  JavaScript ](#tab-panel-12463)
* [  TypeScript ](#tab-panel-12464)
* [  Hono ](#tab-panel-12465)
* [  Python ](#tab-panel-12466)

**JavaScript**

```js
export default {
  async fetch(request) {
    /**
     * An object with different URLs to fetch
     * @param {Object} ORIGINS
     */
    const ORIGINS = {
      "starwarsapi.yourdomain.com": "swapi.dev",
      "google.yourdomain.com": "www.google.com",
    };


    const url = new URL(request.url);


    // Check if incoming hostname is a key in the ORIGINS object
    if (url.hostname in ORIGINS) {
      const target = ORIGINS[url.hostname];
      url.hostname = target;
      // If it is, proxy request to that third party origin
      return fetch(url.toString(), request);
    }
    // Otherwise, process request as normal
    return fetch(request);
  },
};
```

**TypeScript**

```ts
export default {
  async fetch(request): Promise<Response> {
    /**
     * An object with different URLs to fetch
     * @param {Object} ORIGINS
     */
    const ORIGINS = {
      "starwarsapi.yourdomain.com": "swapi.dev",
      "google.yourdomain.com": "www.google.com",
    };


    const url = new URL(request.url);


    // Check if incoming hostname is a key in the ORIGINS object
    if (url.hostname in ORIGINS) {
      const target = ORIGINS[url.hostname];
      url.hostname = target;
      // If it is, proxy request to that third party origin
      return fetch(url.toString(), request);
    }
    // Otherwise, process request as normal
    return fetch(request);
  },
} satisfies ExportedHandler;
```

**TypeScript**

```ts
import { Hono } from "hono";
import { proxy } from "hono/proxy";


// An object with different URLs to fetch
const ORIGINS: Record<string, string> = {
  "starwarsapi.yourdomain.com": "swapi.dev",
  "google.yourdomain.com": "www.google.com",
};


const app = new Hono();


app.all("*", async (c) => {
  const url = new URL(c.req.url);


  // Check if incoming hostname is a key in the ORIGINS object
  if (url.hostname in ORIGINS) {
    const target = ORIGINS[url.hostname];
    url.hostname = target;


    // If it is, proxy request to that third party origin
    return proxy(url, c.req.raw);
  }


  // Otherwise, process request as normal
  return proxy(c.req.raw);
});


export default app;
```

**Python**

```py
from workers import WorkerEntrypoint
from js import fetch, URL


class Default(WorkerEntrypoint):
    async def fetch(self, request):
        # A dict with different URLs to fetch
        ORIGINS = {
          "starwarsapi.yourdomain.com": "swapi.dev",
          "google.yourdomain.com": "www.google.com",
        }


        url = URL.new(request.url)


        # Check if incoming hostname is a key in the ORIGINS object
        if url.hostname in ORIGINS:
            url.hostname = ORIGINS[url.hostname]
            # If it is, proxy request to that third party origin
            return fetch(url.toString(), request)


        # Otherwise, process request as normal
        return fetch(request)
```

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```