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

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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_READDATA 3 "16 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
24 .SH NAME
25 CURLOPT_READDATA \- custom pointer passed to the read callback
26 .SH SYNOPSIS
27 #include <curl/curl.h>
28
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_READDATA, void *pointer);
30 .SH DESCRIPTION
31 Data \fIpointer\fP to pass to the file read function. If you use the
32 \fICURLOPT_READFUNCTION(3)\fP option, this is the pointer you'll get as
33 input in the 4th argument to the callback.
34
35 If you don't specify a read callback but instead rely on the default internal
36 read function, this data must be a valid readable FILE * (cast to 'void *').
37
38 If you're using libcurl as a win32 DLL, you \fBMUST\fP use a
39 \fICURLOPT_READFUNCTION(3)\fP if you set this option or you will experience
40 crashes.
41 .SH DEFAULT
42 By default, this is a FILE * to stdin.
43 .SH PROTOCOLS
44 This is used for all protocols when sending data.
45 .SH EXAMPLE
46 .nf
47 CURL *curl = curl_easy_init();
48 struct MyData this;
49 if(curl) {
50 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
51
52 /* pass pointer that gets passed in to the
53 CURLOPT_READFUNCTION callback */
54 curl_easy_setopt(curl, CURLOPT_READDATA, &this);
55
56 curl_easy_perform(curl);
57 }
58 .fi
59 .SH AVAILABILITY
60 This option was once known by the older name CURLOPT_INFILE, the name
61 \fICURLOPT_READDATA(3)\fP was introduced in 7.9.7.
62 .SH RETURN VALUE
63 This will return CURLE_OK.
64 .SH "SEE ALSO"
65 .BR CURLOPT_READFUNCTION "(3), " CURLOPT_WRITEDATA "(3), "