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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_asio.reference.ip__resolver_query_base"></a><a class="link" href="ip__resolver_query_base.html" title="ip::resolver_query_base">ip::resolver_query_base</a>
</h3></div></div></div>
<p>
The <a class="link" href="ip__resolver_query_base.html" title="ip::resolver_query_base"><code class="computeroutput"><span class="identifier">ip</span><span class="special">::</span><span class="identifier">resolver_query_base</span></code></a>
class is used as a base for the <a class="link" href="ip__basic_resolver_query.html" title="ip::basic_resolver_query"><code class="computeroutput"><span class="identifier">ip</span><span class="special">::</span><span class="identifier">basic_resolver_query</span></code></a>
class templates to provide a common place to define the flag constants.
</p>
<pre class="programlisting"><span class="keyword">class</span> <span class="identifier">resolver_query_base</span>
</pre>
<h5>
<a name="boost_asio.reference.ip__resolver_query_base.h0"></a>
<span class="phrase"><a name="boost_asio.reference.ip__resolver_query_base.types"></a></span><a class="link" href="ip__resolver_query_base.html#boost_asio.reference.ip__resolver_query_base.types">Types</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Name
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/flags.html" title="ip::resolver_query_base::flags"><span class="bold"><strong>flags</strong></span></a>
</p>
</td>
<td>
<p>
A bitmask type (C++ Std [lib.bitmask.types]).
</p>
</td>
</tr></tbody>
</table></div>
<h5>
<a name="boost_asio.reference.ip__resolver_query_base.h1"></a>
<span class="phrase"><a name="boost_asio.reference.ip__resolver_query_base.protected_member_functions"></a></span><a class="link" href="ip__resolver_query_base.html#boost_asio.reference.ip__resolver_query_base.protected_member_functions">Protected
Member Functions</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Name
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody><tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/_resolver_query_base.html" title="ip::resolver_query_base::~resolver_query_base"><span class="bold"><strong>~resolver_query_base</strong></span></a>
</p>
</td>
<td>
<p>
Protected destructor to prevent deletion through this type.
</p>
</td>
</tr></tbody>
</table></div>
<h5>
<a name="boost_asio.reference.ip__resolver_query_base.h2"></a>
<span class="phrase"><a name="boost_asio.reference.ip__resolver_query_base.data_members"></a></span><a class="link" href="ip__resolver_query_base.html#boost_asio.reference.ip__resolver_query_base.data_members">Data
Members</a>
</h5>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Name
</p>
</th>
<th>
<p>
Description
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/address_configured.html" title="ip::resolver_query_base::address_configured"><span class="bold"><strong>address_configured</strong></span></a>
</p>
</td>
<td>
<p>
Only return IPv4 addresses if a non-loopback IPv4 address is configured
for the system. Only return IPv6 addresses if a non-loopback IPv6
address is configured for the system.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/all_matching.html" title="ip::resolver_query_base::all_matching"><span class="bold"><strong>all_matching</strong></span></a>
</p>
</td>
<td>
<p>
If used with v4_mapped, return all matching IPv6 and IPv4 addresses.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/canonical_name.html" title="ip::resolver_query_base::canonical_name"><span class="bold"><strong>canonical_name</strong></span></a>
</p>
</td>
<td>
<p>
Determine the canonical name of the host specified in the query.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/numeric_host.html" title="ip::resolver_query_base::numeric_host"><span class="bold"><strong>numeric_host</strong></span></a>
</p>
</td>
<td>
<p>
Host name should be treated as a numeric string defining an IPv4
or IPv6 address and no name resolution should be attempted.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/numeric_service.html" title="ip::resolver_query_base::numeric_service"><span class="bold"><strong>numeric_service</strong></span></a>
</p>
</td>
<td>
<p>
Service name should be treated as a numeric string defining a port
number and no name resolution should be attempted.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/passive.html" title="ip::resolver_query_base::passive"><span class="bold"><strong>passive</strong></span></a>
</p>
</td>
<td>
<p>
Indicate that returned endpoint is intended for use as a locally
bound socket endpoint.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="ip__resolver_query_base/v4_mapped.html" title="ip::resolver_query_base::v4_mapped"><span class="bold"><strong>v4_mapped</strong></span></a>
</p>
</td>
<td>
<p>
If the query protocol family is specified as IPv6, return IPv4-mapped
IPv6 addresses on finding no IPv6 addresses.
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="boost_asio.reference.ip__resolver_query_base.h3"></a>
<span class="phrase"><a name="boost_asio.reference.ip__resolver_query_base.requirements"></a></span><a class="link" href="ip__resolver_query_base.html#boost_asio.reference.ip__resolver_query_base.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/ip/resolver_query_base.hpp</code>
</p>
<p>
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
</p>
</div>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2015 Christopher M.
Kohlhoff<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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