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CURLOPT_PROXY_CAINFO_BLOB(3)

CURLOPT_P...AINFO_BLOB(3)  curl_easy_setopt options  CURLOPT_P...AINFO_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),         CUR‐
       LOPT_PROXY_SSL_VERIFYPEER(3),   CURLOPT_PROXY_SSL_VERIFYHOST(3),   CUR‐
       LOPT_CAINFO(3),    CURLOPT_CAINFO_BLOB(3),    CURLOPT_CAPATH(3),   CUR‐
       LOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST(3),

libcurl 7.86.0                   May 17, 2022        CURLOPT_P...AINFO_BLOB(3)
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