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.TH CURLINFO_PROTOCOL 3 "23 November 2016" "libcurl 7.52.0" "curl_easy_getinfo options"
.SH NAME
CURLINFO_PROTOCOL \- get the protocol used in the connection
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PROTOCOL, long *p);
.SH DESCRIPTION
Pass a pointer to a long to receive the version used in the last http connection.
The returned value will be one of the CURLPROTO_* values.
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
  CURLcode res;
  curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
  res = curl_easy_perform(curl);
  if(res == CURLE_OK) {
    long protocol;
    curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
  }
  curl_easy_cleanup(curl);
}
.fi
.SH AVAILABILITY
Added in 7.52.0
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLINFO_RESPONSE_CODE "(3), "
.BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), "