Proxy error getaddrinfo ENOTFOUND

nguyen991

Hi, I'm trying Dynamic proxy with @colyseus/proxy. Here logs when start proxy

3|colyseus | @colyseus/proxy listening at {"address":"::","family":"IPv6","port":8080}
3|colyseus | LISTEN add { processId: 'sVP_lHbH6', address: 'null:2577' }
3|colyseus | LISTEN add { processId: 'LTUuaSyW6', address: 'null:2567' }
3|colyseus | LISTEN add { processId: 'cixG2EmEF', address: 'null:2587' }

Then, try to call an api and get error logs

3|colyseus-proxy  | Using proxy 0 /ping
3|colyseus-proxy  | Proxy error during: /ping
3|colyseus-proxy  | Error: getaddrinfo ENOTFOUND null
3|colyseus-proxy  |     at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:66:26)

Please help, thanks

endel

Hi @nguyen991, it seems the internal-ip is not being able to retrieve the IP address for your server. Here's the reference to the source-code where this null is coming from: https://github.com/colyseus/colyseus/blob/530f13745e655c526f5b5aef9fa5cc05de5396d6/src/discovery/index.ts#L13

@scarybanana (member on Discord) is having the same issue inside Kubernetes. I can't tell exactly why this is happening, I'd appreciate if you can help to inspect this issue

Cheers

ScaryBanana

Hello, each colyseus server will try to get it's ip address from process.env.SELF_HOSTNAME before falling back to internal-ip.

In some rare cases it appears internal-ip isn't working, so an easy fix is to set the SELF_HOSTNAME env variable for each server.