comparison mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLOPT_RANGE.3 @ 2:b50eed0cc0ef upstream

ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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23 .TH CURLOPT_RANGE 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
24 .SH NAME
25 CURLOPT_RANGE \- set byte range to request
26 .SH SYNOPSIS
27 #include <curl/curl.h>
28
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RANGE, char *range);
30 .SH DESCRIPTION
31 Pass a char * as parameter, which should contain the specified range you want
32 to retrieve. It should be in the format "X-Y", where either X or Y may be left
33 out and X and Y are byte indexes.
34
35 HTTP transfers also support several intervals, separated with commas as in
36 \fI"X-Y,N-M"\fP. Using this kind of multiple intervals will cause the HTTP
37 server to send the response document in pieces (using standard MIME separation
38 techniques). Unfortunately, the HTTP standard (RFC 7233 section 3.1) allows
39 servers to ignore range requests so even when you set \fICURLOPT_RANGE(3)\fP
40 for a request, you may end up getting the full response sent back.
41
42 For RTSP, the formatting of a range should follow RFC2326 Section 12.29. For
43 RTSP, byte ranges are \fBnot\fP permitted. Instead, ranges should be given in
44 npt, utc, or smpte formats.
45
46 For HTTP PUT uploads this option should not be used, since it may conflict with
47 other options. If you need to upload arbitrary parts of a file (like for
48 Amazon's web services) support is limited. We suggest set resume position using
49 \fICURLOPT_RESUME_FROM(3)\fP, set end (resume+size) position using
50 \fICURLOPT_INFILESIZE(3)\fP and seek to the resume position before initiating
51 the transfer for each part. For more information refer to
52 https://curl.haxx.se/mail/lib-2019-05/0012.html
53
54 Pass a NULL to this option to disable the use of ranges.
55
56 The application does not have to keep the string around after setting this
57 option.
58 .SH DEFAULT
59 NULL
60 .SH PROTOCOLS
61 HTTP, FTP, FILE, RTSP and SFTP.
62 .SH EXAMPLE
63 .nf
64 CURL *curl = curl_easy_init();
65 if(curl) {
66 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
67
68 /* get the first 200 bytes */
69 curl_easy_setopt(curl, CURLOPT_RANGE, "0-199");
70
71 /* Perform the request */
72 curl_easy_perform(curl);
73 }
74 .fi
75 .SH AVAILABILITY
76 FILE since 7.18.0, RTSP since 7.20.0
77 .SH RETURN VALUE
78 Returns CURLE_OK on success or
79 CURLE_OUT_OF_MEMORY if there was insufficient heap space.
80 .SH "SEE ALSO"
81 .BR CURLOPT_RESUME_FROM "(3), "