Development Admin and Proxy

Table of Contents

Development Setup

When you run your app in dev mode with clap dev, Electrode starts two servers for you:

  • The webpack dev server

  • Your application node server

Webpack Dev Server

This is webpack's development server that compiles and bundles your browser code and serve them in memory.

It starts a node server that listens at port 2992, which you can change with the env variable WEBPACK_DEV_PORT.

Your application node server

Electrode will also start your application server from src/server/index.js, with @babel/register loaded.

By default, Electrode's development server will be hosted from the dev reverse proxy. The port it listens to is 3000, which you can change with the env variable PORT.

The application server is hosted at 3100 by default, which you can change with the env variable APP_SERVER_PORT.

Dev Admin Console

The latest Electrode runs an interactive menu that allows you to restart these two servers on demand, with the --inspect-brk flag if you need to attach a debugger to them.

You can access the Electrode Development Dashboard using the URL http://localhost:3000/__electrode_dev.

Dev Admin Logging

While the dev-admin server is running, any logs generated by the application with a log level lower than error will be cached by the system and not displayed in the console. In order to view the logs, you may either view all the logs in the console using the L key, or use the log viewer page: http://localhost:3000/__electrode_dev/log. You may also use the 0-6 keys to view only logs of particular levels:

  • 0: only error

  • 1: warn or higher

  • 2: info or higher

  • 3: http or higher

  • 4: verbose or higher

  • 5: debug or higher

  • 6: silly or higher (identical to L)

Dev Reverse Proxy

When your app is built and deployed to production, it will not have a webpack dev server, and that's a very different setup than when your app is running in dev mode.

To make dev mode more similar to production, Electrode offers a reverse proxy server that combines webpack dev server and your app server under a single port.

Checklist to set up your reverse proxy server

  1. Enable Reverse Proxy or Persist APP_SERVER_PORT : Specify the env variable APP_SERVER_PORT to run the app node server on a different port.

  2. Update your server's port: Update the app server to listen on the port from APP_SERVER_PORT.

Disable Reverse Proxy

The dev reverse proxy is enabled by default at port 3000 forwarding to the application server at 3100.

To disable the reverse proxy, specify the empty string "" to the env variable APP_SERVER_PORT.

This will cause the Electrode application server to run directly on the env variable PORT (which is 3000 by default).

For example, to serve your app on port 3000, which uses webpack dev server at 2992 but disable the dev reverse proxy, do this:


Now if you point your browser to http://localhost:3000, your entire app will appear to be serving from that single port.

Serving the your application from HTTP port 80

You can also run your app at the standard HTTP port 80 while continuing to run your app server at 3000:

PORT=80 APP_SERVER_PORT=3000 clap dev

You will need to provide elevated root/admin access for the proxy to listen at port 80.

Now you can point your browser to http://localhost to access your entire app.


If you want to set APP_SERVER_PORT persistently and always disable the reverse proxy, then you should set it in xclap.js with:


Proxy Admin

The reverse proxy has an admin route that you can access at /__proxy_admin/status.

Update your server's port

If your app was generated with Electrode ignite, then it reads the port number in the file config/default.js:

Make sure its code for that look like this:

const defaultListenPort = 3000;
const portFromEnv = () => {
const x = parseInt(process.env.APP_SERVER_PORT || process.env.PORT, 10);
return x !== null && !isNaN(x) ? x : defaultListenPort;
module.exports = {
connections: {
default: {
port: portFromEnv()

Latest version of Electrode ignite should generate that for you already.