NAME

CURLOPT_HTTP09 - allow HTTP/0.9 response

SYNOPSIS

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTP09_ALLOWED, long allowed);

DESCRIPTION

Pass the long argument allowed set to 1L to allow HTTP/0.9 responses.

A HTTP/0.9 response is a server response entirely without headers and only a body, while you can connect to lots of random TCP services and still get a response that curl might consider to be HTTP/0.9.

DEFAULT

curl allows HTTP/0.9 responses by default.

A future curl version will require this option to be set to allow HTTP/0.9 responses.

PROTOCOLS

HTTP

EXAMPLE

CURL *curl = curl_easy_init();
if(curl) {


  CURLcode ret;


  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");


  curl_easy_setopt(curl, CURLOPT_HTTP09_ALLOWED, 1L);


  ret = curl_easy_perform(curl);
}

AVAILABILITY

Option added in 7.64.0, present along with HTTP.

RETURN VALUE

Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.