47 lines
1.3 KiB
D
47 lines
1.3 KiB
D
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Long: range
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Short: r
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Help: Retrieve only the bytes within RANGE
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Arg: <range>
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Protocols: HTTP FTP SFTP FILE
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---
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Retrieve a byte range (i.e. a partial document) from an HTTP/1.1, FTP or SFTP
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server or a local FILE. Ranges can be specified in a number of ways.
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.RS
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.TP 10
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.B 0-499
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specifies the first 500 bytes
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.TP
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.B 500-999
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specifies the second 500 bytes
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.TP
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.B -500
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specifies the last 500 bytes
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.TP
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.B 9500-
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specifies the bytes from offset 9500 and forward
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.TP
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.B 0-0,-1
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specifies the first and last byte only(*)(HTTP)
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.TP
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.B 100-199,500-599
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specifies two separate 100-byte ranges(*) (HTTP)
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.RE
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.IP
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(*) = NOTE that this will cause the server to reply with a multipart
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response!
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Only digit characters (0-9) are valid in the 'start' and 'stop' fields of the
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\&'start-stop' range syntax. If a non-digit character is given in the range,
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the server's response will be unspecified, depending on the server's
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configuration.
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You should also be aware that many HTTP/1.1 servers do not have this feature
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enabled, so that when you attempt to get a range, you'll instead get the whole
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document.
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FTP and SFTP range downloads only support the simple 'start-stop' syntax
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(optionally with one of the numbers omitted). FTP use depends on the extended
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FTP command SIZE.
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If this option is used several times, the last one will be used.
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