nostraddress / NIP-05 failing

[tnperron]

Describe the bug
nostraddress / NIP-05 GET request failing with USERNAME is not found on \\MYDOMAIN. Noted the presence of double backslashes before the domain.

To Reproduce
Steps to reproduce the behavior:
Send GET request to https://MYDOMAIN/api/v2/nostraddress?name=USERNAME via browser.

Expected behavior
A return of NIP-05 standard response of names: USERNAME: HEXNPUB upon success, or USERNAME is not found on MYDOMAIN upon failure (note no double backslashes before the domain).

Additional context

• nostrcheck-server 0.6.0 set up via install.sh script on Ubuntu Server 24.04.1 LTS
• Nginx debug logs reported a correct $host
• Hard-coding domain in place of req.hostname on line 22 of nostraddress.ts results in successful NIP-05 GET response.
• Adding logger.debug('Raw req.headers.host: ${req.headers.host}'); after line 22 in nostraddress.ts logs header showing double backslashes before the domain. Seems to suggest double backslashes are being added somewhere between Nginx and req.hostname?
• Replacing line 22 in nostraddress.ts with const servername = (req.headers.host || "").replace(/^[\\]+/, "").trim(); cleans the double backslashes. Am currently using this as a workaround.

[quentintaranpino]

Hello!

Thank you for reporting this issue. Could you let me know what req.hostname returns in the debugger?

[tnperron]

Here's the log entry I kept. Domain and OS username have been sanitized, everything else is original:
{"0":"Raw Host header: \\MYDOMAIN","_meta":{"runtime":"Nodejs","runtimeVersion":"v21.7.3","hostname":"nostrcheck","date":"2024-12-05 17:54:08","logLevelId":2,"logLevelName":"DEBUG","path":{"fullFilePath":"/home/OSUSER/nostrcheck-server/src/controllers/nostraddress.ts:14:12","fileName":"nostraddress.ts","fileNameWithLine":"nostraddress.ts:14","fileColumn":"12","fileLine":"14","filePath":"/src/controllers/nostraddress.ts","filePathWithLine":"/src/controllers/nostraddress.ts:14","method":"getNostraddress"}}}

[quentintaranpino]

It might be related to the Nginx configuration. Could you check and let me know what value $host has in your Nginx setup? That could help narrow it down.

[tnperron]

"nostrcheck.taylorperron.com" without the quotes. No backslashes present. I double checked by logging from nginx.conf and it reported the same.

I don't mind providing my Nginx configs via DM somewhere if it would help.