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CURLOPT_HTTP09_ALLOWED(3)           libcurl          CURLOPT_HTTP09_ALLOWED(3)

NAME

CURLOPT_HTTP09_ALLOWED - 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. An 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), ibcurl 8.1.2 April 26, 2023 CURLOPT_HTTP09_ALLOWED(3)

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