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<a name="asio.reference.ip__basic_resolver_query.basic_resolver_query.overload3"></a><a class="link" href="overload3.html" title="ip::basic_resolver_query::basic_resolver_query (3 of 4 overloads)">
ip::basic_resolver_query::basic_resolver_query (3 of 4 overloads)</a>
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<p>
Construct with specified host name and service name for any protocol.
</p>
<pre class="programlisting"><span class="identifier">basic_resolver_query</span><span class="special">(</span>
<span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> <span class="identifier">host_name</span><span class="special">,</span>
<span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> <span class="identifier">service_name</span><span class="special">,</span>
<span class="identifier">resolver_query_base</span><span class="special">::</span><span class="identifier">flags</span> <span class="identifier">resolve_flags</span> <span class="special">=</span> <span class="identifier">address_configured</span><span class="special">);</span>
</pre>
<p>
This constructor is typically used to perform name resolution for communication
with remote hosts.
</p>
<a name="asio.reference.ip__basic_resolver_query.basic_resolver_query.overload3.parameters"></a><h6>
<a name="id881277"></a>
<a class="link" href="overload3.html#asio.reference.ip__basic_resolver_query.basic_resolver_query.overload3.parameters">Parameters</a>
</h6>
<div class="variablelist">
<p class="title"><b></b></p>
<dl>
<dt><span class="term">host_name</span></dt>
<dd><p>
A string identifying a location. May be a descriptive name or a numeric
address string. If an empty string and the passive flag has been
specified, the resolved endpoints are suitable for local service
binding. If an empty string and passive is not specified, the resolved
endpoints will use the loopback address.
</p></dd>
<dt><span class="term">service_name</span></dt>
<dd><p>
A string identifying the requested service. This may be a descriptive
name or a numeric string corresponding to a port number. May be an
empty string, in which case all resolved endpoints will have a port
number of 0.
</p></dd>
<dt><span class="term">resolve_flags</span></dt>
<dd><p>
A set of flags that determine how name resolution should be performed.
The default flags are suitable for communication with remote hosts.
</p></dd>
</dl>
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<a name="asio.reference.ip__basic_resolver_query.basic_resolver_query.overload3.remarks"></a><h6>
<a name="id881347"></a>
<a class="link" href="overload3.html#asio.reference.ip__basic_resolver_query.basic_resolver_query.overload3.remarks">Remarks</a>
</h6>
<p>
On POSIX systems, host names may be locally defined in the file <code class="computeroutput"><span class="special">/</span><span class="identifier">etc</span><span class="special">/</span><span class="identifier">hosts</span></code>.
On Windows, host names may be defined in the file <code class="computeroutput"><span class="identifier">c</span><span class="special">:\</span><span class="identifier">windows</span><span class="special">\</span><span class="identifier">system32</span><span class="special">\</span><span class="identifier">drivers</span><span class="special">\</span><span class="identifier">etc</span><span class="special">\</span><span class="identifier">hosts</span></code>.
Remote host name resolution is performed using DNS. Operating systems
may use additional locations when resolving host names (such as NETBIOS
names on Windows).
</p>
<p>
On POSIX systems, service names are typically defined in the file <code class="computeroutput"><span class="special">/</span><span class="identifier">etc</span><span class="special">/</span><span class="identifier">services</span></code>.
On Windows, service names may be found in the file <code class="computeroutput"><span class="identifier">c</span><span class="special">:\</span><span class="identifier">windows</span><span class="special">\</span><span class="identifier">system32</span><span class="special">\</span><span class="identifier">drivers</span><span class="special">\</span><span class="identifier">etc</span><span class="special">\</span><span class="identifier">services</span></code>.
Operating systems may use additional locations when resolving service
names.
</p>
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<td align="right"><div class="copyright-footer">Copyright © 2003 - 2010 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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