[#E4CDAC99B5C36926B677F962FFF03E1A69438035]

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    <div>
        <h2>Function <a href="#">url_view_base</a>::
encoded_zone_id</h2>
        <p><span>Return the IPv6 Zone ID</span></p>


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        <h3>Synopsis</h3>
        <div>
            <code>
                            </code>
        </div>
        <pre class="source-code cpp">
            pct_string_view
encoded_zone_id() const noexcept;
        </pre>
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        <h3>Description</h3>
        <p><span>If the host type is</span> <span>host_type::ipv6</span> <span>,        this function returns the Zone ID as</span>
<span>a string. Otherwise an empty string is returned.</span>
<span>The returned string may contain</span>
<span>percent escapes.</span></p>

<h3>Example</h3>
<code>
assert( url_view( "http://[fe80::1%25eth0]/" ).encoded_zone_id() == "eth0" );
</code>
<h3>Complexity</h3>
<p><span>Constant.</span></p>

<h3>Exception Safety</h3>
<p><span>Throws nothing.</span></p>

<h3>BNF</h3>
<code>
host        = IP-literal / IPv4address / reg-name

IP-literal = "[" ( IPv6address / IPv6addrz / IPvFuture  ) "]"

ZoneID = 1*( unreserved / pct-encoded )

IPv6addrz = IPv6address "%25" ZoneID
</code>
<h3>Specification</h3>
<li><a href="https://datatracker.ietf.org/doc/html/rfc6874">Representing IPv6 Zone Identifiers in Address Literals and Uniform Resource Identifiers</a></li>

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