Error occurred while trying to proxy request on Garden v0.12.50.

[eysi09]

Bug

Current Behavior

Proxying a network request through a port forward created by Garden has been reported to fail with the following error after we upgraded to Node 18:

[HPM] Error occurred while trying to proxy request *** from localhost:XXXX to localhost:XXXX (ECONNREFUSED) 

This seems to happen when the client sending the network request uses Node's http-proxy-middleware and the target is localhost. Something like:

import { createProxyMiddleware } from "http-proxy-middleware"

const proxy = createProxyMiddlewareI({
  target: "localhost:8080" // <--- Target is localhost
})

Expected behavior

I would expect things to work as before, but maybe this is an issue in Node 18. Here's an SO thread that looks relevant and the suggestion is to use 127.0.0.1 instead of localhost.

So perhaps this is something that needs be handled by the user in the createProxyMiddleware function as opposed to by Garden.

Workaround

First, set the GARDEN_PROXY_DEFAULT_ADDRESS environment variable to 127.0.0.1. E.g.:

GARDEN_PROXY_DEFAULT_ADDRESS=127.0.0.1 garden deploy --dev

Then make sure to use 127.0.0.1 as opposed to localhost in the createProxyMiddleware function as suggested on StackOveflow.

Your environment

• OS: macOS

garden version 0.12.50.

[Walther]

These threads are probably relevant:

• [Bug] not working at node 17 chimurai/http-proxy-middleware#705
• dns: runtime deprecate type coercion of dns.lookup options nodejs/node#39793
• "localhost" favours IPv6 in node v17, used to favour IPv4 nodejs/node#40537

From node 17 onwards, using localhost may result in the listening occurring on IPv6 only