AspNetCoreModule status code when serving app_offline.htm

[dolly22]

Is it possible to configure status code returned by AspNetCoreModule? It returns 200 OK which has it's issues.

For example when serving static assets through CDN configured with origin pull, app_offline.htm page content may be cached when 200 OK is returned.

Classic ASP.NET returns 503 Service Unavailable when serving app_offline.htm requests.

[Tratcher]

@pan-wang, this should be changed.

[naveedahmed1]

@Tratcher is it possible to add Retry-After header as well when serving app_offline.htm since search engines suggest adding it https://webmasters.googleblog.com/2011/01/how-to-deal-with-planned-site-downtime.html

[Tratcher]

@naveedahmed1 that's an interesting idea. Please open a new issue in https://github.com/aspnet/AspNetCoreModule/issues

[pan-wang]

where does the value of 'Retry-After" come from? Host has no clue about it.