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comparison mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLOPT_PROXY_CAINFO.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_PROXY_CAINFO 3 "16 Nov 2016" "libcurl 7.52.0" "curl_easy_setopt options"
24 .SH NAME
25 CURLOPT_PROXY_CAINFO \- path to proxy Certificate Authority (CA) bundle
26 .SH SYNOPSIS
27 #include <curl/curl.h>
28
29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_CAINFO, char *path);
30 .SH DESCRIPTION
31 This option is for connecting to an HTTPS proxy, not an HTTPS server.
32
33 Pass a char * to a zero terminated string naming a file holding one or more
34 certificates to verify the HTTPS proxy with.
35
36 If \fICURLOPT_PROXY_SSL_VERIFYPEER(3)\fP is zero and you avoid verifying the
37 server's certificate, \fICURLOPT_PROXY_CAINFO(3)\fP need not even indicate an
38 accessible file.
39
40 This option is by default set to the system path where libcurl's cacert bundle
41 is assumed to be stored, as established at build time.
42
43 If curl is built against the NSS SSL library, the NSS PEM PKCS#11 module
44 (libnsspem.so) needs to be available for this option to work properly.
45
46 (iOS and macOS only) If curl is built against Secure Transport, then this
47 option is supported for backward compatibility with other SSL engines, but it
48 should not be set. If the option is not set, then curl will use the
49 certificates in the system and user Keychain to verify the peer, which is the
50 preferred method of verifying the peer's certificate chain.
51
52 The application does not have to keep the string around after setting this
53 option.
54 .SH DEFAULT
55 Built-in system specific
56 .SH PROTOCOLS
57 Used with HTTPS proxy
58 .SH EXAMPLE
59 .nf
60 CURL *curl = curl_easy_init();
61 if(curl) {
62 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
63 /* using an HTTPS proxy */
64 curl_easy_setopt(curl, CURLOPT_PROXY, "https://localhost:443");
65 curl_easy_setopt(curl, CURLOPT_PROXY_CAINFO, "/etc/certs/cabundle.pem");
66 ret = curl_easy_perform(curl);
67 curl_easy_cleanup(curl);
68 }
69 .fi
70 .SH AVAILABILITY
71 Added in 7.52.0
72
73 For TLS backends that don't support certificate files, the
74 \fICURLOPT_PROXY_CAINFO(3)\fP option is ignored. Refer to
75 https://curl.haxx.se/docs/ssl-compared.html
76 .SH RETURN VALUE
77 Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
78 CURLE_OUT_OF_MEMORY if there was insufficient heap space.
79 .SH "SEE ALSO"
80 .BR CURLOPT_PROXY_CAPATH "(3), "
81 .BR CURLOPT_PROXY_SSL_VERIFYPEER "(3), " CURLOPT_PROXY_SSL_VERIFYHOST "(3), "
82 .BR CURLOPT_CAPATH "(3), "
83 .BR CURLOPT_SSL_VERIFYPEER "(3), " CURLOPT_SSL_VERIFYHOST "(3), "