CURLOPT_DEFAULT_PROTOCOL - ing a scheme name
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DEFAULT_PROTOCOL, char *protocol);
curl_easy_setopt options                           CURLOPT_DEFAULT_PROTOCOL(3)
NAME
       CURLOPT_DEFAULT_PROTOCOL  - default protocol to use if the URL is miss-
       ing a scheme name
SYNOPSIS
       #include <curl/curl.h>
       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DEFAULT_PROTOCOL,
                                 char *protocol);
DESCRIPTION
       This option tells libcurl to use protocol  if  the  URL  is  missing  a
       scheme name.
       Use one of these protocol (scheme) names:
       dict,  file,  ftp, ftps, gopher, http, https, imap, imaps, ldap, ldaps,
       pop3, pop3s, rtsp, scp, sftp, smb, smbs, smtp, smtps, telnet, tftp
       An unknown or unsupported protocol causes error  CURLE_UNSUPPORTED_PRO-
       TOCOL  when  libcurl  parses  a  schemeless  URL.  Parsing happens when
       curl_easy_perform(3) or curl_multi_perform(3) is called. The  protocols
       supported  by  libcurl  will  vary  depending  on how it was built. Use
       curl_version_info(3) if you need a list of protocol names supported  by
       the build of libcurl that you are using.
       This option does not change the default proxy protocol (http).
       Without  this  option libcurl would make a guess based on the host, see
       CURLOPT_URL(3) for details.
       The application does not have to keep the string around  after  setting
       this option.
DEFAULT
       NULL (make a guess based on the host)
PROTOCOLS
       All
EXAMPLE
       curl = curl_easy_init();
       if(curl) {
         /* set a URL without a scheme */
         curl_easy_setopt(curl, CURLOPT_URL, "example.com");
         /* set the default protocol (scheme) for schemeless URLs */
         curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
         /* Perform the request */
         curl_easy_perform(curl);
       }
AVAILABILITY
       Added in 7.45.0
RETURN VALUE
       CURLE_OK if the option is supported.
       CURLE_OUT_OF_MEMORY if there was insufficient heap space.
       CURLE_UNKNOWN_OPTION if the option is not supported.
ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:
       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | web/curl         |
       +---------------+------------------+
       |Stability      | Uncommitted      |
       +---------------+------------------+
SEE ALSO
       CURLOPT_URL(3),
NOTES
       Source  code  for open source software components in Oracle Solaris can
       be found at https://www.oracle.com/downloads/opensource/solaris-source-
       code-downloads.html.
       This     software     was    built    from    source    available    at
       https://github.com/oracle/solaris-userland.   The  original   community
       source       was       downloaded      from       https://curl.se/down-
       load/curl-7.83.1.tar.bz2.
       Further information about this software can be found on the open source
       community website at http://curl.haxx.se/.
libcurl 7.83.1                 November 26, 2021
                                                   CURLOPT_DEFAULT_PROTOCOL(3)