expressjsHow can I configure Express.js to use Nginx as a reverse proxy?

To configure Express.js to use Nginx as a reverse proxy, you need to set up Nginx as a reverse proxy server and configure it to forward requests to your Express.js application.

First, install Nginx and configure it as a reverse proxy server. In its configuration file, add the following code block:

server {
    listen 80;
    server_name example.com;
    location / {
        proxy_pass http://localhost:3000;
    }
}

This will tell Nginx to listen on port 80 and forward all requests to example.com to localhost:3000, where your Express.js application is running.

Next, in your Express.js application, set the trust proxy setting to true to tell Express.js that it is running behind a reverse proxy.

app.set('trust proxy', true);

Finally, make sure that your application is running on localhost:3000 and restart Nginx.

Code explanation

1. listen 80;: tells Nginx to listen on port 80.
2. server_name example.com;: tells Nginx to forward requests to example.com to the specified location.
3. proxy_pass http://localhost:3000;: tells Nginx to forward requests to localhost:3000.
4. app.set('trust proxy', true);: tells Express.js that it is running behind a reverse proxy.

Helpful links

• Nginx Reverse Proxy
• Express.js Trust Proxy Setting

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