Gatsby Netlify function not receiving client IP address in request headers

Support
,
1

I am building a Gatsby site with Netlify functions and trying to capture the client IP address in a Netlify function to forward it to an external API. However, the client IP address is not being received in the request headers of the Netlify function.

I have tried accessing the client IP address using the following headers in my Netlify function:

  • event.headers['x-nf-client-connection-ip']
  • event.headers['x-forwarded-for']
  • event.headers['client-ip']

None of these headers seem to contain the correct client IP address.

Here’s the relevant code snippet from my Netlify function:

const clientIp = event.headers['x-forwarded-for'] || event.headers['x-nf-client-connection-ip'];
console.log('Client IP:', clientIp);

// Make the request to the external API using built-in fetch
const response = await fetch(apiUrl, {
  headers: {
    'Content-Type': 'application/json',
    'X-Forwarded-For': clientIp || 'Unknown',
  },
});

I have also checked the Netlify function logs, and the clientIp variable is either undefined or not capturing the correct IP address.

I have reached out to the external API provider, and they confirmed that they are not receiving the X-Forwarded-For header with the client IP address in the requests coming from my Netlify function.

I have searched through the Netlify documentation and forums but couldn’t find a solution specific to my Gatsby setup.

Could you please help me understand why the client IP address is not being captured correctly in my Netlify function and how I can forward it to the external API? Are there any Gatsby-specific configurations or settings I need to consider?

Any guidance or assistance would be greatly appreciated. Thank you in advance!

2

Hi, @Alopex. Which site is this for (either the site subdomain or site id will help here)?

3

This is the address exact branch deploy This is for https://xheader--mtadev.netlify.app/

4

I tried making a request to: https://xheader--mtadev.netlify.app/.netlify/functions/address-inquiry?plan_type=foo&address=bar and correctly got my IP logged in the function console.

Has this been resolved?