CURLOPT_HTTP09_ALLOWED

Section: curl_easy_setopt options (3)
Updated: August 05, 2019
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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. 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 allowed HTTP/0.9 responses by default before 7.66.0

Since 7.66.0, libcurl requires this option set to 1L 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.  

SEE ALSO

CURLOPT_SSLVERSION(3), CURLOPT_HTTP_VERSION(3),


 

Index

NAME
SYNOPSIS
DESCRIPTION
DEFAULT
PROTOCOLS
EXAMPLE
AVAILABILITY
RETURN VALUE
SEE ALSO