Best practices for webcal clients and servers

[dmfs]

As a developer of a server which can render webcal feeds or of a client which can consume webcal feeds, I'd like to have some guidance. Possible topics:

• use and meaning of iCalendar METHOD property
• content-type
• Etags
• if-none-match header
• subscription upgrade
• best practices for clients
  • how to "discover" good behavior on a server
  • how to deal with bad behaving servers
• common pitfalls
  • why not to return "current time" as "last modified"

[wsdwl]

I would say, that beyond the last point, I assume this issue to be solved by copying Everts documentation about how to build a Card/CalDAV client to DEVGUIDE with the latest commit.

@dmfs : What's your opinion?

[dmfs]

My request was about Webcal feeds, not CalDAV. I didn't check the new content yet, but afaik Evert didn't address webcal feeds.