December 2002
Intermediate to advanced
576 pages
32h
English
If-Range
If-Range: entity_tag
|
date
A conditional requesting only the portion of the entity that is
missing if it has not been changed, and the entire entity if it has.
Must be used in conjunction with a Range header.
Either an entity tag or a date can identify the partial entity
already received; see the Date header for
information on the format for dates.
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