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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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2021-11-09 01:08:47 +08:00
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.\" * Copyright (C) 1998 - 2019, 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_HTTP09_ALLOWED 3 "17 Dec 2018" "libcurl 7.64.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_HTTP09_ALLOWED \- allow HTTP/0.9 response
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTP09_ALLOWED, long allowed);
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.fi
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.SH DESCRIPTION
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Pass the long argument \fIallowed\fP set to 1L to allow HTTP/0.9 responses.
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A HTTP/0.9 response is a server response entirely without headers and only a
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body. You can connect to lots of random TCP services and still get a response
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that curl might consider to be HTTP/0.9!
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.SH DEFAULT
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curl allowed HTTP/0.9 responses by default before 7.66.0
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2019-08-05 15:45:23 +08:00
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Since 7.66.0, libcurl requires this option set to 1L to allow HTTP/0.9
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responses.
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.SH PROTOCOLS
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HTTP
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.SH EXAMPLE
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.nf
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode ret;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
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curl_easy_setopt(curl, CURLOPT_HTTP09_ALLOWED, 1L);
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ret = curl_easy_perform(curl);
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}
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.fi
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.SH AVAILABILITY
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Option added in 7.64.0, present along with HTTP.
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.SH RETURN VALUE
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Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH "SEE ALSO"
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.BR CURLOPT_SSLVERSION "(3), " CURLOPT_HTTP_VERSION "(3), "
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