Byte based offsets (file handler)

[joamag]

Support for the byte based offsets.
This feature is also called byte serving.
There should be support for both single range and multi range byte serving.

Example

# request is made with these kind of headers
Range: bytes=500-999
Range: bytes=-500
Range: bytes=500-600,601-999

# response is created with these kind og headers
Content-Range: bytes 21010-47021/47022

Reference

http://en.wikipedia.org/wiki/Byte_serving
http://en.wikipedia.org/wiki/List_of_HTTP_header_fields#accept-ranges-response-header
http://www.web-polygraph.org/docs/userman/ranges.html
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.16

[joamag]

This feature is now partially implemented.
Multiple ranges are still missing. Must decide if they are meant to be implemented.