NAME

       CURLOPT_SSH_KNOWNHOSTS - file name holding the SSH known hosts

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_KNOWNHOSTS, char *fname);

DESCRIPTION

       Pass  a  pointer  to  a  null-terminated string holding the file name of the known_host file to use.  The
       known_hosts file should use the OpenSSH file format as supported by libssh2. If this file  is  specified,
       libcurl  only  accepts  connections  with  hosts that are known and present in that file, with a matching
       public key. Use CURLOPT_SSH_KEYFUNCTION(3) to alter the default behavior on  host  and  key  matches  and
       mismatches.

       The application does not have to keep the string around after setting this option.

DEFAULT

       NULL

PROTOCOLS

       SFTP and SCP

EXAMPLE

       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/file");
           curl_easy_setopt(curl, CURLOPT_SSH_KNOWNHOSTS,
                            "/home/clarkkent/.ssh/known_hosts");
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY

       Added in 7.19.6

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_SSH_AUTH_TYPES(3), CURLOPT_SSH_HOST_PUBLIC_KEY_MD5(3)

ibcurl 8.5.0                                    December 04, 2023                      CURLOPT_SSH_KNOWNHOSTS(3)