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<div class="titlepage"><div><div><h3 class="title">
<a name="asio.reference.basic_socket"></a><a class="link" href="basic_socket.html" title="basic_socket">basic_socket</a>
</h3></div></div></div>
<p>
<a class="indexterm" name="asio.indexterm.basic_socket"></a>
</p>
<p>
Provides socket functionality.
</p>
<pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
<span class="keyword">typename</span> <a class="link" href="Protocol.html" title="Protocol requirements">Protocol</a><span class="special">,</span>
<span class="keyword">typename</span> <a class="link" href="Executor1.html" title="Executor requirements">Executor</a><span class="special">&gt;</span>
<span class="keyword">class</span> <span class="identifier">basic_socket</span> <span class="special">:</span>
<span class="keyword">public</span> <span class="identifier">socket_base</span>
</pre>
<h5>
<a name="asio.reference.basic_socket.h0"></a>
<span><a name="asio.reference.basic_socket.types"></a></span><a class="link" href="basic_socket.html#asio.reference.basic_socket.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__rebind_executor.html" title="basic_socket::rebind_executor"><span class="bold"><strong>rebind_executor</strong></span></a>
</p>
</td>
<td>
<p>
Rebinds the socket type to another executor.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/broadcast.html" title="basic_socket::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/bytes_readable.html" title="basic_socket::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/debug.html" title="basic_socket::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/do_not_route.html" title="basic_socket::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/enable_connection_aborted.html" title="basic_socket::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/endpoint_type.html" title="basic_socket::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/executor_type.html" title="basic_socket::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/keep_alive.html" title="basic_socket::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/linger.html" title="basic_socket::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/lowest_layer_type.html" title="basic_socket::lowest_layer_type"><span class="bold"><strong>lowest_layer_type</strong></span></a>
</p>
</td>
<td>
<p>
A basic_socket is always the lowest layer.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/message_flags.html" title="basic_socket::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/native_handle_type.html" title="basic_socket::native_handle_type"><span class="bold"><strong>native_handle_type</strong></span></a>
</p>
</td>
<td>
<p>
The native representation of a socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/out_of_band_inline.html" title="basic_socket::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/protocol_type.html" title="basic_socket::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/receive_buffer_size.html" title="basic_socket::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/receive_low_watermark.html" title="basic_socket::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/reuse_address.html" title="basic_socket::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/send_buffer_size.html" title="basic_socket::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/send_low_watermark.html" title="basic_socket::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/shutdown_type.html" title="basic_socket::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/wait_type.html" title="basic_socket::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="asio.reference.basic_socket.h1"></a>
<span><a name="asio.reference.basic_socket.member_functions"></a></span><a class="link" href="basic_socket.html#asio.reference.basic_socket.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/assign.html" title="basic_socket::assign"><span class="bold"><strong>assign</strong></span></a>
</p>
</td>
<td>
<p>
Assign an existing native socket to the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/async_connect.html" title="basic_socket::async_connect"><span class="bold"><strong>async_connect</strong></span></a>
</p>
</td>
<td>
<p>
Start an asynchronous connect.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/async_wait.html" title="basic_socket::async_wait"><span class="bold"><strong>async_wait</strong></span></a>
</p>
</td>
<td>
<p>
Asynchronously wait for the socket 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/at_mark.html" title="basic_socket::at_mark"><span class="bold"><strong>at_mark</strong></span></a>
</p>
</td>
<td>
<p>
Determine whether the socket is at the out-of-band data mark.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/available.html" title="basic_socket::available"><span class="bold"><strong>available</strong></span></a>
</p>
</td>
<td>
<p>
Determine the number of bytes available for reading.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/basic_socket.html" title="basic_socket::basic_socket"><span class="bold"><strong>basic_socket</strong></span></a> <span class="silver">[constructor]</span>
</p>
</td>
<td>
<p>
Construct a basic_socket without opening it. <br> <span class="silver"></span><br> Construct
and open a basic_socket. <br> <span class="silver"></span><br> Construct a basic_socket,
opening it and binding it to the given local endpoint. <br> <span class="silver"></span>
<br> Construct a basic_socket on an existing native socket.
<br> <span class="silver"></span><br> Move-construct a basic_socket from another. <br>
<span class="silver"></span><br> Move-construct a basic_socket from a socket of another protocol
type.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/bind.html" title="basic_socket::bind"><span class="bold"><strong>bind</strong></span></a>
</p>
</td>
<td>
<p>
Bind the socket to the given local endpoint.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/cancel.html" title="basic_socket::cancel"><span class="bold"><strong>cancel</strong></span></a>
</p>
</td>
<td>
<p>
Cancel all asynchronous operations associated with the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/close.html" title="basic_socket::close"><span class="bold"><strong>close</strong></span></a>
</p>
</td>
<td>
<p>
Close the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/connect.html" title="basic_socket::connect"><span class="bold"><strong>connect</strong></span></a>
</p>
</td>
<td>
<p>
Connect the socket to the specified endpoint.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/get_executor.html" title="basic_socket::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/get_option.html" title="basic_socket::get_option"><span class="bold"><strong>get_option</strong></span></a>
</p>
</td>
<td>
<p>
Get an option from the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/io_control.html" title="basic_socket::io_control"><span class="bold"><strong>io_control</strong></span></a>
</p>
</td>
<td>
<p>
Perform an IO control command on the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/is_open.html" title="basic_socket::is_open"><span class="bold"><strong>is_open</strong></span></a>
</p>
</td>
<td>
<p>
Determine whether the socket is open.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/local_endpoint.html" title="basic_socket::local_endpoint"><span class="bold"><strong>local_endpoint</strong></span></a>
</p>
</td>
<td>
<p>
Get the local endpoint of the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/lowest_layer.html" title="basic_socket::lowest_layer"><span class="bold"><strong>lowest_layer</strong></span></a>
</p>
</td>
<td>
<p>
Get a reference to the lowest layer. <br> <span class="silver"></span><br> Get a const
reference to the lowest layer.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/native_handle.html" title="basic_socket::native_handle"><span class="bold"><strong>native_handle</strong></span></a>
</p>
</td>
<td>
<p>
Get the native socket representation.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/native_non_blocking.html" title="basic_socket::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 socket implementation.
<br> <span class="silver"></span><br> Sets the non-blocking mode of the native socket implementation.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/non_blocking.html" title="basic_socket::non_blocking"><span class="bold"><strong>non_blocking</strong></span></a>
</p>
</td>
<td>
<p>
Gets the non-blocking mode of the socket. <br> <span class="silver"></span><br> Sets the
non-blocking mode of the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/open.html" title="basic_socket::open"><span class="bold"><strong>open</strong></span></a>
</p>
</td>
<td>
<p>
Open the socket using the specified protocol.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/operator_eq_.html" title="basic_socket::operator="><span class="bold"><strong>operator=</strong></span></a>
</p>
</td>
<td>
<p>
Move-assign a basic_socket from another. <br> <span class="silver"></span><br> Move-assign
a basic_socket from a socket of another protocol type.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/release.html" title="basic_socket::release"><span class="bold"><strong>release</strong></span></a>
</p>
</td>
<td>
<p>
Release ownership of the underlying native socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/remote_endpoint.html" title="basic_socket::remote_endpoint"><span class="bold"><strong>remote_endpoint</strong></span></a>
</p>
</td>
<td>
<p>
Get the remote endpoint of the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/set_option.html" title="basic_socket::set_option"><span class="bold"><strong>set_option</strong></span></a>
</p>
</td>
<td>
<p>
Set an option on the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/shutdown.html" title="basic_socket::shutdown"><span class="bold"><strong>shutdown</strong></span></a>
</p>
</td>
<td>
<p>
Disable sends or receives on the socket.
</p>
</td>
</tr>
<tr>
<td>
<p>
<a class="link" href="basic_socket/wait.html" title="basic_socket::wait"><span class="bold"><strong>wait</strong></span></a>
</p>
</td>
<td>
<p>
Wait for the socket to become ready to read, ready to write, or
to have pending error conditions.
</p>
</td>
</tr>
</tbody>
</table></div>
<h5>
<a name="asio.reference.basic_socket.h2"></a>
<span><a name="asio.reference.basic_socket.protected_member_functions"></a></span><a class="link" href="basic_socket.html#asio.reference.basic_socket.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="basic_socket/_basic_socket.html" title="basic_socket::~basic_socket"><span class="bold"><strong>~basic_socket</strong></span></a> <span class="silver">[destructor]</span>
</p>
</td>
<td>
<p>
Protected destructor to prevent deletion through this type.
</p>
</td>
</tr></tbody>
</table></div>
<h5>
<a name="asio.reference.basic_socket.h3"></a>
<span><a name="asio.reference.basic_socket.data_members"></a></span><a class="link" href="basic_socket.html#asio.reference.basic_socket.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/max_connections.html" title="basic_socket::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/max_listen_connections.html" title="basic_socket::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/message_do_not_route.html" title="basic_socket::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/message_end_of_record.html" title="basic_socket::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/message_out_of_band.html" title="basic_socket::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/message_peek.html" title="basic_socket::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.html" title="basic_socket"><code class="computeroutput"><span class="identifier">basic_socket</span></code></a>
class template provides functionality that is common to both stream-oriented
and datagram-oriented sockets.
</p>
<h5>
<a name="asio.reference.basic_socket.h4"></a>
<span><a name="asio.reference.basic_socket.thread_safety"></a></span><a class="link" href="basic_socket.html#asio.reference.basic_socket.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>
<h5>
<a name="asio.reference.basic_socket.h5"></a>
<span><a name="asio.reference.basic_socket.requirements"></a></span><a class="link" href="basic_socket.html#asio.reference.basic_socket.requirements">Requirements</a>
</h5>
<p>
<span class="emphasis"><em>Header: </em></span><code class="literal">asio/basic_socket.hpp</code>
</p>
<p>
<span class="emphasis"><em>Convenience header: </em></span><code class="literal">asio.hpp</code>
</p>
</div>
<div class="copyright-footer">Copyright © 2003-2023 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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