CURLOPT_HTTP09_ALLOWED(3)

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

6       CURLOPT_HTTP09_ALLOWED - 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 allowed);
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DESCRIPTION

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

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

27       HTTP
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EXAMPLE

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

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

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