If-Range
| If-Range |
The If-Range header, like all the If headers, can be used to make a request conditional. It is used when an application has a copy of a range of a resource, to revalidate the range or get the complete resource if the range is no longer valid. Chapter 7 discusses conditional requests in detail.
Type
Request header
Basic Syntax
If-Range: (HTTP-date | entity-tag)
Examples
If-Range: Tue, 3 Oct 1997 02:15:31 GMT
If-Range: "11e92a-457b-3134b5aa"