CURLOPT_DEFAULT_PROTOCOL(3)                           curl_easy_setopt options

NAME
       CURLOPT_DEFAULT_PROTOCOL - default protocol to use if the URL is
       missing 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_PROTOCOL when libcurl parses a schemeless URL.
       Parsing happens when _easy_perform&section=3">curl_easy_perform(3) or _multi_perform&section=3">curl_multi_perform(3) is
       called. The protocols supported by libcurl will vary depending on how
       it was built. Use _version_info&section=3">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
       _URL&section=3">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.

SEE ALSO
       CURLOPT_URL(3),

libcurl 7.77.0                 November 4, 2020    CURLOPT_DEFAULT_PROTOCOL(3)