[bittorrent] Combining conventional mirrors with BT

Harold Feit - Depthstrike.com administrator dwknight at depthstrike.com
Fri May 27 15:28:20 EDT 2005


 
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The "Range:" HTTP header permits a section of a file to be requested.

- From RFC2616:
"HTTP/1.1 allows a client to request that only part (a range of) the
response entity be included within the response. HTTP/1.1 uses range
units in the Range (section 14.35) and Content-Range (section 14.16)
header fields. An entity can be broken down into subranges according
to various structural units."

FTP's offset selector (I can't remember the FTP command right off,
but it does let you set the start offset, you just need to close once
you hit the end offset) also lets you segment.

- -----Original Message-----
From: bittorrent-bounces at lists.ibiblio.org
[mailto:bittorrent-bounces at lists.ibiblio.org] On Behalf Of Charles
Iliya Krempeaux
Sent: Friday, May 27, 2005 4:15 PM
To: BitTorrent App Mailing List
Subject: Re: [bittorrent] Combining conventional mirrors with BT

Hello,

Does HTTP and FTP allow you to download fragments of a file?  (I.e.,
can you ask an HTTP or FTP serer to give you a piece of a file
starting the offset "X" and with length "Y"?)

(For HTTP, perhaps the WebDAV extension [to HTTP] does.  But don't
know for sure.)

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