Meaning of Depth header in WebDAV PROPFIND method -

i writing in php create virtual file system using webdav.

i trying head around propfind request method. rfc 4918 mentions it, i’m not sure understand. can clarify this:

• what role of depth value (0, 1, infinity)? has folders vs files?
• why client make multiple propfind requests on folder?

i think might me sort out of rest.

thanks

what role of depth value (0, 1, infinity)? has folders vs files?

for directories:

• depth 0: retrieve properties of directory
• depth 1: 0 + properties of files in directory
• depth infinity: 1 + properties of files in sub-directories of directory (recursively)

for files has no effect.

the depth applies other webdav methods.