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CURLOPT_PROXY_CAINFO_BLOB(3) libcurl CURLOPT_PROXY_CAINFO_BLOB(3)
NAME
 CURLOPT_PROXY_CAINFO_BLOB - proxy Certificate Authority (CA) bundle in
 PEM format
SYNOPSIS
 #include <curl/curl.h>
 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_CAINFO_BLOB,
 struct curl_blob *stblob);
DESCRIPTION
 This option is for connecting to an HTTPS proxy, not an HTTPS server.
 Pass a pointer to a curl_blob structure, which contains information
 (pointer and size) about a memory block with binary data of PEM encoded
 content holding one or more certificates to verify the HTTPS proxy
 with.
 If CURLOPT_PROXY_SSL_VERIFYPEER(3) is zero and you avoid verifying the
 server's certificate, CURLOPT_PROXY_CAINFO_BLOB(3) is not needed.
 This option overrides CURLOPT_PROXY_CAINFO(3).
DEFAULT
 NULL
PROTOCOLS
 Used with HTTPS proxy
EXAMPLE
 char *strpem; /* strpem must point to a PEM string */
 CURL *curl = curl_easy_init();
 if(curl) {
 struct curl_blob blob;
 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
 /* using an HTTPS proxy */
 curl_easy_setopt(curl, CURLOPT_PROXY, "https://localhost:443");
 blob.data = strpem;
 blob.len = strlen(strpem);
 blob.flags = CURL_BLOB_COPY;
 curl_easy_setopt(curl, CURLOPT_PROXY_CAINFO_BLOB, &blob);
 ret = curl_easy_perform(curl);
 curl_easy_cleanup(curl);
 }
AVAILABILITY
 Added in 7.77.0.
 This option is supported by the rustls (since 7.82.0), OpenSSL, Secure
 Transport and Schannel backends.
RETURN VALUE
 Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if
 not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.
SEE ALSO
 CURLOPT_PROXY_CAINFO(3), CURLOPT_PROXY_CAPATH(3),
 CURLOPT_PROXY_SSL_VERIFYPEER(3), CURLOPT_PROXY_SSL_VERIFYHOST(3),
 CURLOPT_CAINFO(3), CURLOPT_CAINFO_BLOB(3), CURLOPT_CAPATH(3),
 CURLOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST(3),
ibcurl 8.1.2 April 26, 2023 CURLOPT_PROXY_CAINFO_BLOB(3)

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