`expire` Field not present in `subscription-userinfo` header

[nulluser0]

Describe the bug The expire field is not present in subscription-userinfo headers for sing-box subscriptions in users with data limits.

To Reproduce Steps to reproduce the behavior:

1. Create user with a data limit
2. Copy subscription URL of the user
3. Either using curl, panel docs page, or any other client, GET (subscription url), accept application/json with user agent set as HiddifyNext (or add /sing-box).
4. Check headers. The expire field is absent from subscription-userinfo.

Expected behavior For users with data limits, there should be an expire field in subscription-userinfo. Lack of this means clients (like Hiddify Next) cannot show user their data usage.

Screenshots N/A

Machine details (please complete the following information): Client:

• OS: Windows 11 23H2
• Python version: N/A
• Nodejs version: N/A
• Browser: Firefox 129.0.2

Server:

• OS: Ubuntu-22.04-x86_64
• Marzban version: v0.6.0 on Docker
• X-Ray core version: v1.8.23

Additional context N/A

[nulluser0]

Upon further exploration, I realized that the expire field is present only when expiration date and data limit are both set. When one or both are not, the expire field disappears.

Is this intended?

[M03ED]

this is fixed on dev branch, check dev version