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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_asio.reference.basic_socket_acceptor"></a><a class="link" href="basic_socket_acceptor.html" title="basic_socket_acceptor">basic_socket_acceptor</a>
</h3></div></div></div>
<p>
<a class="indexterm" name="boost_asio.indexterm.basic_socket_acceptor"></a>
</p>
<p>
Provides the ability to accept new connections.
</p>
<pre class="programlisting">template&lt;
typename <a class="link" href="Protocol.html" title="Protocol requirements">Protocol</a>,
typename <a class="link" href="Executor1.html" title="Executor requirements">Executor</a>&gt;
class basic_socket_acceptor :
public socket_base
</pre>
<h5>
<a name="boost_asio.reference.basic_socket_acceptor.h0"></a>
<span class="phrase"><a name="boost_asio.reference.basic_socket_acceptor.types"></a></span><a class="link" href="basic_socket_acceptor.html#boost_asio.reference.basic_socket_acceptor.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="basic_socket_acceptor__rebind_executor.html" title="basic_socket_acceptor::rebind_executor"><span class="bold"><strong>rebind_executor</strong></span></a>
</p>
</td>
<td>
<p>
Rebinds the acceptor type to another executor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/broadcast.html" title="basic_socket_acceptor::broadcast"><span class="bold"><strong>broadcast</strong></span></a>
</p>
</td>
<td>
<p>
Socket option to permit sending of broadcast messages.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/bytes_readable.html" title="basic_socket_acceptor::bytes_readable"><span class="bold"><strong>bytes_readable</strong></span></a>
</p>
</td>
<td>
<p>
IO control command to get the amount of data that can be read without
blocking.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/debug.html" title="basic_socket_acceptor::debug"><span class="bold"><strong>debug</strong></span></a>
</p>
</td>
<td>
<p>
Socket option to enable socket-level debugging.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/do_not_route.html" title="basic_socket_acceptor::do_not_route"><span class="bold"><strong>do_not_route</strong></span></a>
</p>
</td>
<td>
<p>
Socket option to prevent routing, use local interfaces only.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/enable_connection_aborted.html" title="basic_socket_acceptor::enable_connection_aborted"><span class="bold"><strong>enable_connection_aborted</strong></span></a>
</p>
</td>
<td>
<p>
Socket option to report aborted connections on accept.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/endpoint_type.html" title="basic_socket_acceptor::endpoint_type"><span class="bold"><strong>endpoint_type</strong></span></a>
</p>
</td>
<td>
<p>
The endpoint type.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/executor_type.html" title="basic_socket_acceptor::executor_type"><span class="bold"><strong>executor_type</strong></span></a>
</p>
</td>
<td>
<p>
The type of the executor associated with the object.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/keep_alive.html" title="basic_socket_acceptor::keep_alive"><span class="bold"><strong>keep_alive</strong></span></a>
</p>
</td>
<td>
<p>
Socket option to send keep-alives.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/linger.html" title="basic_socket_acceptor::linger"><span class="bold"><strong>linger</strong></span></a>
</p>
</td>
<td>
<p>
Socket option to specify whether the socket lingers on close if
unsent data is present.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/message_flags.html" title="basic_socket_acceptor::message_flags"><span class="bold"><strong>message_flags</strong></span></a>
</p>
</td>
<td>
<p>
Bitmask type for flags that can be passed to send and receive operations.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/native_handle_type.html" title="basic_socket_acceptor::native_handle_type"><span class="bold"><strong>native_handle_type</strong></span></a>
</p>
</td>
<td>
<p>
The native representation of an acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/out_of_band_inline.html" title="basic_socket_acceptor::out_of_band_inline"><span class="bold"><strong>out_of_band_inline</strong></span></a>
</p>
</td>
<td>
<p>
Socket option for putting received out-of-band data inline.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/protocol_type.html" title="basic_socket_acceptor::protocol_type"><span class="bold"><strong>protocol_type</strong></span></a>
</p>
</td>
<td>
<p>
The protocol type.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/receive_buffer_size.html" title="basic_socket_acceptor::receive_buffer_size"><span class="bold"><strong>receive_buffer_size</strong></span></a>
</p>
</td>
<td>
<p>
Socket option for the receive buffer size of a socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/receive_low_watermark.html" title="basic_socket_acceptor::receive_low_watermark"><span class="bold"><strong>receive_low_watermark</strong></span></a>
</p>
</td>
<td>
<p>
Socket option for the receive low watermark.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/reuse_address.html" title="basic_socket_acceptor::reuse_address"><span class="bold"><strong>reuse_address</strong></span></a>
</p>
</td>
<td>
<p>
Socket option to allow the socket to be bound to an address that
is already in use.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/send_buffer_size.html" title="basic_socket_acceptor::send_buffer_size"><span class="bold"><strong>send_buffer_size</strong></span></a>
</p>
</td>
<td>
<p>
Socket option for the send buffer size of a socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/send_low_watermark.html" title="basic_socket_acceptor::send_low_watermark"><span class="bold"><strong>send_low_watermark</strong></span></a>
</p>
</td>
<td>
<p>
Socket option for the send low watermark.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/shutdown_type.html" title="basic_socket_acceptor::shutdown_type"><span class="bold"><strong>shutdown_type</strong></span></a>
</p>
</td>
<td>
<p>
Different ways a socket may be shutdown.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/wait_type.html" title="basic_socket_acceptor::wait_type"><span class="bold"><strong>wait_type</strong></span></a>
</p>
</td>
<td>
<p>
Wait types.
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="boost_asio.reference.basic_socket_acceptor.h1"></a>
<span class="phrase"><a name="boost_asio.reference.basic_socket_acceptor.member_functions"></a></span><a class="link" href="basic_socket_acceptor.html#boost_asio.reference.basic_socket_acceptor.member_functions">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="basic_socket_acceptor/accept.html" title="basic_socket_acceptor::accept"><span class="bold"><strong>accept</strong></span></a>
</p>
</td>
<td>
<p>
Accept a new connection. <br> <span class="silver"></span><br> Accept a new connection
and obtain the endpoint of the peer.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/assign.html" title="basic_socket_acceptor::assign"><span class="bold"><strong>assign</strong></span></a>
</p>
</td>
<td>
<p>
Assigns an existing native acceptor to the acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/async_accept.html" title="basic_socket_acceptor::async_accept"><span class="bold"><strong>async_accept</strong></span></a>
</p>
</td>
<td>
<p>
Start an asynchronous accept.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/async_wait.html" title="basic_socket_acceptor::async_wait"><span class="bold"><strong>async_wait</strong></span></a>
</p>
</td>
<td>
<p>
Asynchronously wait for the acceptor to become ready to read, ready
to write, or to have pending error conditions.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/basic_socket_acceptor.html" title="basic_socket_acceptor::basic_socket_acceptor"><span class="bold"><strong>basic_socket_acceptor</strong></span></a> <span class="silver">[constructor]</span>
</p>
</td>
<td>
<p>
Construct an acceptor without opening it. <br> <span class="silver"></span><br> Construct
an open acceptor. <br> <span class="silver"></span><br> Construct an acceptor opened on
the given endpoint. <br> <span class="silver"></span><br> Construct a basic_socket_acceptor
on an existing native acceptor. <br> <span class="silver"></span><br> Move-construct a
basic_socket_acceptor from another. <br> <span class="silver"></span><br> Move-construct
a basic_socket_acceptor from an acceptor of another protocol type.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/bind.html" title="basic_socket_acceptor::bind"><span class="bold"><strong>bind</strong></span></a>
</p>
</td>
<td>
<p>
Bind the acceptor to the given local endpoint.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/cancel.html" title="basic_socket_acceptor::cancel"><span class="bold"><strong>cancel</strong></span></a>
</p>
</td>
<td>
<p>
Cancel all asynchronous operations associated with the acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/close.html" title="basic_socket_acceptor::close"><span class="bold"><strong>close</strong></span></a>
</p>
</td>
<td>
<p>
Close the acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/get_executor.html" title="basic_socket_acceptor::get_executor"><span class="bold"><strong>get_executor</strong></span></a>
</p>
</td>
<td>
<p>
Get the executor associated with the object.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/get_option.html" title="basic_socket_acceptor::get_option"><span class="bold"><strong>get_option</strong></span></a>
</p>
</td>
<td>
<p>
Get an option from the acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/io_control.html" title="basic_socket_acceptor::io_control"><span class="bold"><strong>io_control</strong></span></a>
</p>
</td>
<td>
<p>
Perform an IO control command on the acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/is_open.html" title="basic_socket_acceptor::is_open"><span class="bold"><strong>is_open</strong></span></a>
</p>
</td>
<td>
<p>
Determine whether the acceptor is open.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/listen.html" title="basic_socket_acceptor::listen"><span class="bold"><strong>listen</strong></span></a>
</p>
</td>
<td>
<p>
Place the acceptor into the state where it will listen for new
connections.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/local_endpoint.html" title="basic_socket_acceptor::local_endpoint"><span class="bold"><strong>local_endpoint</strong></span></a>
</p>
</td>
<td>
<p>
Get the local endpoint of the acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/native_handle.html" title="basic_socket_acceptor::native_handle"><span class="bold"><strong>native_handle</strong></span></a>
</p>
</td>
<td>
<p>
Get the native acceptor representation.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/native_non_blocking.html" title="basic_socket_acceptor::native_non_blocking"><span class="bold"><strong>native_non_blocking</strong></span></a>
</p>
</td>
<td>
<p>
Gets the non-blocking mode of the native acceptor implementation.
<br> <span class="silver"></span><br> Sets the non-blocking mode of the native acceptor
implementation.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/non_blocking.html" title="basic_socket_acceptor::non_blocking"><span class="bold"><strong>non_blocking</strong></span></a>
</p>
</td>
<td>
<p>
Gets the non-blocking mode of the acceptor. <br> <span class="silver"></span><br> Sets
the non-blocking mode of the acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/open.html" title="basic_socket_acceptor::open"><span class="bold"><strong>open</strong></span></a>
</p>
</td>
<td>
<p>
Open the acceptor using the specified protocol.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/operator_eq_.html" title="basic_socket_acceptor::operator="><span class="bold"><strong>operator=</strong></span></a>
</p>
</td>
<td>
<p>
Move-assign a basic_socket_acceptor from another. <br> <span class="silver"></span><br>
Move-assign a basic_socket_acceptor from an acceptor of another
protocol type.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/release.html" title="basic_socket_acceptor::release"><span class="bold"><strong>release</strong></span></a>
</p>
</td>
<td>
<p>
Release ownership of the underlying native acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/set_option.html" title="basic_socket_acceptor::set_option"><span class="bold"><strong>set_option</strong></span></a>
</p>
</td>
<td>
<p>
Set an option on the acceptor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/wait.html" title="basic_socket_acceptor::wait"><span class="bold"><strong>wait</strong></span></a>
</p>
</td>
<td>
<p>
Wait for the acceptor to become ready to read, ready to write,
or to have pending error conditions.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/_basic_socket_acceptor.html" title="basic_socket_acceptor::~basic_socket_acceptor"><span class="bold"><strong>~basic_socket_acceptor</strong></span></a> <span class="silver">[destructor]</span>
</p>
</td>
<td>
<p>
Destroys the acceptor.
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="boost_asio.reference.basic_socket_acceptor.h2"></a>
<span class="phrase"><a name="boost_asio.reference.basic_socket_acceptor.data_members"></a></span><a class="link" href="basic_socket_acceptor.html#boost_asio.reference.basic_socket_acceptor.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="basic_socket_acceptor/max_connections.html" title="basic_socket_acceptor::max_connections"><span class="bold"><strong>max_connections</strong></span></a> <span class="silver">[static]</span>
</p>
</td>
<td>
<p>
(Deprecated: Use max_listen_connections.) The maximum length of
the queue of pending incoming connections.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/max_listen_connections.html" title="basic_socket_acceptor::max_listen_connections"><span class="bold"><strong>max_listen_connections</strong></span></a> <span class="silver">[static]</span>
</p>
</td>
<td>
<p>
The maximum length of the queue of pending incoming connections.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/message_do_not_route.html" title="basic_socket_acceptor::message_do_not_route"><span class="bold"><strong>message_do_not_route</strong></span></a> <span class="silver">[static]</span>
</p>
</td>
<td>
<p>
Specify that the data should not be subject to routing.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/message_end_of_record.html" title="basic_socket_acceptor::message_end_of_record"><span class="bold"><strong>message_end_of_record</strong></span></a> <span class="silver">[static]</span>
</p>
</td>
<td>
<p>
Specifies that the data marks the end of a record.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/message_out_of_band.html" title="basic_socket_acceptor::message_out_of_band"><span class="bold"><strong>message_out_of_band</strong></span></a> <span class="silver">[static]</span>
</p>
</td>
<td>
<p>
Process out-of-band data.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket_acceptor/message_peek.html" title="basic_socket_acceptor::message_peek"><span class="bold"><strong>message_peek</strong></span></a> <span class="silver">[static]</span>
</p>
</td>
<td>
<p>
Peek at incoming data without removing it from the input queue.
</p>
</td>
</tr>
</tbody>
</table></div>
<p>
The <a class="link" href="basic_socket_acceptor.html" title="basic_socket_acceptor"><code class="computeroutput">basic_socket_acceptor</code></a>
class template is used for accepting new socket connections.
</p>
<h5>
<a name="boost_asio.reference.basic_socket_acceptor.h3"></a>
<span class="phrase"><a name="boost_asio.reference.basic_socket_acceptor.thread_safety"></a></span><a class="link" href="basic_socket_acceptor.html#boost_asio.reference.basic_socket_acceptor.thread_safety">Thread
Safety</a>
</h5>
<p>
<span class="emphasis"><em>Distinct</em></span> <span class="emphasis"><em>objects:</em></span> Safe.
</p>
<p>
<span class="emphasis"><em>Shared</em></span> <span class="emphasis"><em>objects:</em></span> Unsafe.
</p>
<p>
Synchronous <code class="computeroutput">accept</code> operations are thread safe, if the underlying
operating system calls are also thread safe. This means that it is permitted
to perform concurrent calls to synchronous <code class="computeroutput">accept</code> operations
on a single socket object. Other synchronous operations, such as <code class="computeroutput">open</code>
or <code class="computeroutput">close</code>, are not thread safe.
</p>
<h5>
<a name="boost_asio.reference.basic_socket_acceptor.h4"></a>
<span class="phrase"><a name="boost_asio.reference.basic_socket_acceptor.example"></a></span><a class="link" href="basic_socket_acceptor.html#boost_asio.reference.basic_socket_acceptor.example">Example</a>
</h5>
<p>
Opening a socket acceptor with the SO_REUSEADDR option enabled:
</p>
<pre class="programlisting">boost::asio::ip::tcp::acceptor acceptor(my_context);
boost::asio::ip::tcp::endpoint endpoint(boost::asio::ip::tcp::v4(), port);
acceptor.open(endpoint.protocol());
acceptor.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
acceptor.bind(endpoint);
acceptor.listen();
</pre>
<h5>
<a name="boost_asio.reference.basic_socket_acceptor.h5"></a>
<span class="phrase"><a name="boost_asio.reference.basic_socket_acceptor.requirements"></a></span><a class="link" href="basic_socket_acceptor.html#boost_asio.reference.basic_socket_acceptor.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/basic_socket_acceptor.hpp</code>
</p>
<p>
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
</p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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