CURLOPT_HTTP09_ALLOWED - Man Page
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
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
See Also
Referenced By
curl_easy_setopt(3), CURLOPT_HTTP200ALIASES(3), CURLOPT_HTTP_VERSION(3), libcurl-symbols(3).
2024-09-24 libcurl