CURLINFO_HTTP_CONNECTCODE(3) Library Functions Manual
NAME
CURLINFO_HTTP_CONNECTCODE - CONNECT response code
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_HTTP_CONNECTCODE, long *p);
DESCRIPTION
Pass a pointer to a long to receive the last received HTTP proxy
response code to a CONNECT request. The returned value is zero if no
such response code was available.
PROTOCOLS
This functionality affects http only
EXAMPLE
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode result;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
/* typically CONNECT is used to do HTTPS over HTTP proxies */
curl_easy_setopt(curl, CURLOPT_PROXY, "http://127.0.0.1");
result = curl_easy_perform(curl);
if(result == CURLE_OK) {
long code;
result = curl_easy_getinfo(curl, CURLINFO_HTTP_CONNECTCODE, &code);
if(!result && code)
printf("The CONNECT response code: %03ld\n", code);
}
curl_easy_cleanup(curl);
}
}
AVAILABILITY
Added in curl 7.10.7
RETURN VALUE
curl_easy_getinfo(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred,
see libcurl-errors(3).
SEE ALSO
CURLINFO_RESPONSE_CODE(3), curl_easy_getinfo(3), curl_easy_setopt(3)
libcurl 2026-03-23 CURLINFO_HTTP_CONNECTCODE(3)
curl 8.19.0 - Generated Wed Mar 25 16:28:38 CDT 2026