# ServerSide DNS Integration

So you have a permaweb application and it is on the permaweb, but you also have a specific domain that you want users to use to access this app. mydomain.com, to connect your domain to a permaweb app, you have several options, this option we will show here is a called a server-side redirect. The redirect occurs as a reverse proxy so that the user remains on mydomain.com in their browser, while behind the scenes the application is being served from the permaweb.

# What you will need to setup a reverse proxy using deno.com

• A deno.com account, which at the time of this writting is free.
• A domain with access to the DNS Settings
• A permaweb application identifier and is deployed on the permaweb

# Create proxy on Deno.com

Deno Deploy is a distributed system that runs at the edge. 35 regions worldwide. Open your browser to https://deno.comopen in new window and click sign in or sign up if you do not have an account.

Click on New Project and Click Play

The deno playground will allow us to create a proxy without having to leave the browser.

Copy the following code:

import { serve } from "https://deno.land/std/http/mod.ts";

const APP_ID = "YOUR AREWEAVE IDENTIFIER"

const fileService = `https://arweave.net/${APP_ID}`;

// handle requests
async function reqHandler(req: Request) {
  const path = new URL(req.url).pathname;
  // proxy to arweave.net
  return await fetch(fileService + path).then(res => {
    const headers = new Headers(res.headers)
    // instruct server to leverage the edge cache
    headers.set('cache-control', 's-max-age=600, stale-while-revalidate=6000')

    // return response from arweave.net
    return new Response(res.body, {
      status: res.status,
      headers
    })
  });
}

// listen for requests
serve(reqHandler, { port: 8100 });

This proxy server will receive requests from mydomain.com and proxy the request to arweave.net/APP_ID and then return the response as mydomain.com. Your APP_ID is the TX_ID identifier for you permaweb application.

Click Save and Deploy

# Connecting to DNS

In Project Settings go to the domains section and click to add a domain.

Enter mydomain.com domain and follow the instructions to modify your DNS settings to point to the deno deploy edge network.

It may take a few minutes to resolve to the dns, but once resolved your app will now be rendering from mydomain.com.

🎉 Congrats you have published a server-side redirect to your permaweb application.

# Automating the Deploy

If you would like to automate new deploys of your permaweb app, look into github actions and using the deno deploy github action: https://github.com/denoland/deployctl/blob/main/action/README.mdopen in new window

# Summary

Server Side redirects are great for providing your users a Domain Name System URL to access your permaweb application. We hope you found this guide useful in your permaweb development journey!