If-Range HTTP request header makes a range request conditional: if the condition is fulfilled, the range request will be issued and the server sends back a
Partial Content answer with the appropriate body. If the condition is not fulfilled, the full resource is sent back, with a
The most common use case is to resume a download, to guarantee that the stored resource has not been modified since the last fragment has been received.
If-Range: <day-name>, <day> <month> <year> <hour>:<minute>:<second> GMT If-Range: <etag>
"675af34563dc-tr34") and may be prefixed by
W/to indicate that the weak comparison algorithm should be used.
Greenwich Mean Time. HTTP dates are always expressed in GMT, never in local time.
If-Range: Wed, 21 Oct 2015 07:28:00 GMT
|RFC 7233, section 3.2: If-Range||Hypertext Transfer Protocol (HTTP/1.1): Range Requests|
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