net::ERR_NAME_NOT_RESOLVED

[MarcGodard]

Describe the bug
A clear and concise description of what the bug is.

https://pagespeed.web.dev/analysis/https-rapiddevgroup-com/uzk899s2pg?form_factor=desktop

Error when using pagespeed insights

Server

"version": "4.7.5",

Client

"version": "4.7.5",

    const socket = io(apiSocket, {
      transports: ['websocket'],
      upgrade: true,
      query: { websiteId }
    })

This might be a limitation of pagespeed, of a setting I am using above. Considering I didn't see a lot of other people having this issue, it might be my settings, or a bug.

[darrachequesne]

Hi! A ERR_NAME_NOT_RESOLVED error means the DNS request for the api.rapiddevgroup.com domain failed.

Which is weird, since it seems to be resolvable:

$ dig api.rapiddevgroup.com

; <<>> DiG 9.18.28-0ubuntu0.22.04.1-Ubuntu <<>> api.rapiddevgroup.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16659
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 65494
;; QUESTION SECTION:
;api.rapiddevgroup.com.		IN	A

;; ANSWER SECTION:
api.rapiddevgroup.com.	300	IN	A	172.67.214.239
api.rapiddevgroup.com.	300	IN	A	104.21.91.99

;; Query time: 1208 msec
;; SERVER: 127.0.0.53#53(127.0.0.53) (UDP)
;; WHEN: Fri Aug 23 23:39:05 CEST 2024
;; MSG SIZE  rcvd: 82

Were you able to find the culprit?

[MarcGodard]

Yes it is. Like I said, it might be a limitation of pagespeed. If others could test their site and see if they get the error, that would be helpful to figure out if this is a setting causing it, or page speed.