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<title>Daytime.5 - A synchronous UDP daytime server</title>
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<a name="boost_asio.tutorial.tutdaytime5"></a><a class="link" href="tutdaytime5.html" title="Daytime.5 - A synchronous UDP daytime server">Daytime.5 - A synchronous
      UDP daytime server</a>
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<p>
        This tutorial program shows how to use asio to implement a server application
        with UDP.
      </p>
<pre class="programlisting">int main()
{
  try
  {
    boost::asio::io_context io_context;
</pre>
<p>
        Create an <a class="link" href="../reference/ip__udp/socket.html" title="ip::udp::socket">ip::udp::socket</a>
        object to receive requests on UDP port 13.
      </p>
<pre class="programlisting">    udp::socket socket(io_context, udp::endpoint(udp::v4(), 13));
</pre>
<p>
        Wait for a client to initiate contact with us. The remote_endpoint object
        will be populated by <a class="link" href="../reference/basic_datagram_socket/receive_from.html" title="basic_datagram_socket::receive_from">ip::udp::socket::receive_from()</a>.
      </p>
<p>
        Determine what we are going to send back to the client.
      </p>
<p>
        Send the response to the remote_endpoint.
      </p>
<p>
        Finally, handle any exceptions.
      </p>
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        See the <a class="link" href="tutdaytime5/src.html" title="Source listing for Daytime.5">full source listing</a>
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        Previous: <a class="link" href="tutdaytime4.html" title="Daytime.4 - A synchronous UDP daytime client">Daytime.4 - A synchronous
        UDP daytime client</a>
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        Next: <a class="link" href="tutdaytime6.html" title="Daytime.6 - An asynchronous UDP daytime server">Daytime.6 - An asynchronous
        UDP daytime server</a>
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        Distributed under the Boost Software License, Version 1.0. (See accompanying
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