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CURLOPT_HTTP09_ALLOWED(3) curl_easy_setopt options CURLOPT_HTTP09_ALLOWED(3)

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.

SEE ALSO

CURLOPT_SSLVERSION(3), CURLOPT_HTTP_VERSION(3),
December 17, 2018 libcurl 7.64.0