Man page - curlopt_http09_allowed(3)
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apt-get install libcurl4-doc
Manual
CURLOPT_HTTP09_ALLOWED
NAMESYNOPSIS
DESCRIPTION
DEFAULT
PROTOCOLS
EXAMPLE
HISTORY
AVAILABILITY
RETURN VALUE
SEE ALSO
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
0
PROTOCOLS
This functionality affects http only
EXAMPLE
int main(void)
{
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);
}
}
HISTORY
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.
AVAILABILITY
Added in curl 7.64.0
RETURN VALUE
curl_easy_setopt(3) returns a CURLcode indicating success or error.
CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3) .
SEE ALSO
CURLOPT_HTTP_VERSION (3), CURLOPT_SSLVERSION (3)