curl/docs/libcurl/opts/CURLOPT_HTTP09_ALLOWED.md
Viktor Szakats 3040971d12
GHA: silence proselint warnings and an error
Fix new issues found by `proselint`.

Also:
- silence this technical warning:
  ```
  :0: DeprecationWarning: /home/runner/.proselintrc was found instead of a JSON file. Rename to /home/runner/.proselintrc.json.
  ```
- fix an input filename.
  `proselints` fails now if an input file is missing.

Reported-by: Jay Satiro
Bug: https://github.com/curl/curl/pull/15291#issuecomment-2410505100
Closes #15293
2024-10-15 16:44:17 +02:00

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1.2 KiB
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---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_HTTP09_ALLOWED
Section: 3
Source: libcurl
Protocol:
- HTTP
See-also:
- CURLOPT_HTTP_VERSION (3)
- CURLOPT_SSLVERSION (3)
Added-in: 7.64.0
---
# NAME
CURLOPT_HTTP09_ALLOWED - allow HTTP/0.9 response
# SYNOPSIS
~~~c
#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%
# EXAMPLE
~~~c
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%
# RETURN VALUE
Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.