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<title>BIO_f_null</title>
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<ul id="index">
<li><a href="#NAME">NAME</a></li>
<li><a href="#SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#DESCRIPTION">DESCRIPTION</a></li>
<li><a href="#NOTES">NOTES</a></li>
<li><a href="#RETURN-VALUES">RETURN VALUES</a></li>
<li><a href="#COPYRIGHT">COPYRIGHT</a></li>
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<h1 id="NAME">NAME</h1>
<p>BIO_f_null - null filter</p>
<h1 id="SYNOPSIS">SYNOPSIS</h1>
<pre><code> #include &lt;openssl/bio.h&gt;
const BIO_METHOD *BIO_f_null(void);</code></pre>
<h1 id="DESCRIPTION">DESCRIPTION</h1>
<p>BIO_f_null() returns the null filter BIO method. This is a filter BIO that does nothing.</p>
<p>All requests to a null filter BIO are passed through to the next BIO in the chain: this means that a BIO chain containing a null filter BIO behaves just as though the BIO was not there.</p>
<h1 id="NOTES">NOTES</h1>
<p>As may be apparent a null filter BIO is not particularly useful.</p>
<h1 id="RETURN-VALUES">RETURN VALUES</h1>
<p>BIO_f_null() returns the null filter BIO method.</p>
<h1 id="COPYRIGHT">COPYRIGHT</h1>
<p>Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.</p>
<p>Licensed under the Apache License 2.0 (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
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