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<h3 class="section">16.10 Datagram Socket Operations</h3>

<p><a name="index-datagram-socket-1817"></a>This section describes how to use communication styles that don't use
connections (styles <code>SOCK_DGRAM</code> and <code>SOCK_RDM</code>).  Using
these styles, you group data into packets and each packet is an
independent communication.  You specify the destination for each
packet individually.

   <p>Datagram packets are like letters: you send each one independently
with its own destination address, and they may arrive in the wrong
order or not at all.

   <p>The <code>listen</code> and <code>accept</code> functions are not allowed for
sockets using connectionless communication styles.

<ul class="menu">
<li><a accesskey="1" href="Sending-Datagrams.html#Sending-Datagrams">Sending Datagrams</a>:     Sending packets on a datagram socket. 
<li><a accesskey="2" href="Receiving-Datagrams.html#Receiving-Datagrams">Receiving Datagrams</a>:   Receiving packets on a datagram socket. 
<li><a accesskey="3" href="Datagram-Example.html#Datagram-Example">Datagram Example</a>:      An example program: packets sent over a
                           datagram socket in the local namespace. 
<li><a accesskey="4" href="Example-Receiver.html#Example-Receiver">Example Receiver</a>: 	 Another program, that receives those packets. 
</ul>

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