CURLINFO_HTTP_CONNECTCODE - get the CONNECT response code

Added in curl 7.10.7

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.

int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode res; 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"); res = curl_easy_perform(curl); if(res == CURLE_OK) { long code; res = curl_easy_getinfo(curl, CURLINFO_HTTP_CONNECTCODE, &code); if(!res && code) printf("The CONNECT response code: %03ld\n", code); } curl_easy_cleanup(curl); } }

CURLINFO_HTTP_CONNECTCODE - get the CONNECT response code

This functionality affects http only

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).

CURLINFO_RESPONSE_CODE(3), curl_easy_getinfo(3), curl_easy_setopt(3) libcurl 2025-06-16 CURLINFO_HTTP_CONNECTCODE(3)

#include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_HTTP_CONNECTCODE, long *p);