CURLOPT_HTTP09_ALLOWED(3)

1CURLOPT_HTTP09_ALLOWED(3)  curl_easy_setopt options  CURLOPT_HTTP09_ALLOWED(3)
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NAME

6       CURLOPT_HTTP09 - allow HTTP/0.9 response
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SYNOPSIS

9       #include <curl/curl.h>
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11       CURLcode  curl_easy_setopt(CURL  *handle,  CURLOPT_HTTP09_ALLOWED, long
12       allowed);
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DESCRIPTION

15       Pass the long argument allowed set to 1L to allow HTTP/0.9 responses.
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17       A HTTP/0.9 response is a server response entirely without  headers  and
18       only  a  body. You can connect to lots of random TCP services and still
19       get a response that curl might consider to be HTTP/0.9!
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DEFAULT

22       curl allowed HTTP/0.9 responses by default before 7.66.0
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24       Since 7.66.0, libcurl requires this option set to 1L to allow  HTTP/0.9
25       responses.
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PROTOCOLS

28       HTTP
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EXAMPLE

31       CURL *curl = curl_easy_init();
32       if(curl) {
33         CURLcode ret;
34         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
35         curl_easy_setopt(curl, CURLOPT_HTTP09_ALLOWED, 1L);
36         ret = curl_easy_perform(curl);
37       }
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AVAILABILITY

40       Option added in 7.64.0, present along with HTTP.
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RETURN VALUE

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