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 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),

libcurl 7.81.0                                  November 26, 2021                   CURLOPT_PROXY_CAINFO_BLOB(3)