CURLINFO_PROTOCOL(3)       Library Functions Manual       CURLINFO_PROTOCOL(3)

NAME
       CURLINFO_PROTOCOL - get the protocol used in the connection

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PROTOCOL, long *p);

DESCRIPTION
       This option is deprecated. We strongly recommend using
       CURLINFO_SCHEME(3) instead, because this option cannot return all
       possible protocols!

       Pass a pointer to a long to receive the version used in the last http
       connection. The returned value is set to one of the CURLPROTO_* values:

       CURLPROTO_DICT, CURLPROTO_FILE, CURLPROTO_FTP, CURLPROTO_FTPS,
       CURLPROTO_GOPHER, CURLPROTO_HTTP, CURLPROTO_HTTPS, CURLPROTO_IMAP,
       CURLPROTO_IMAPS, CURLPROTO_LDAP, CURLPROTO_LDAPS, CURLPROTO_POP3,
       CURLPROTO_POP3S, CURLPROTO_RTMP, CURLPROTO_RTMPE, CURLPROTO_RTMPS,
       CURLPROTO_RTMPT, CURLPROTO_RTMPTE, CURLPROTO_RTMPTS, CURLPROTO_RTSP,
       CURLPROTO_SCP, CURLPROTO_SFTP, CURLPROTO_SMB, CURLPROTO_SMBS, CURLPROTO_SMTP,
       CURLPROTO_SMTPS, CURLPROTO_TELNET, CURLPROTO_TFTP, CURLPROTO_MQTT

PROTOCOLS
       All

EXAMPLE
       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
           res = curl_easy_perform(curl);
           if(res == CURLE_OK) {
             long protocol;
             curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
           }
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY
       Added in 7.52.0. Deprecated since 7.85.0.

RETURN VALUE
       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
       if not.

SEE ALSO
       CURLINFO_RESPONSE_CODE(3), curl_easy_getinfo(3), curl_easy_setopt(3)

libcurl                          April 02 2024            CURLINFO_PROTOCOL(3)