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 16.10 Datagram Socket Operations
 ================================
 
 This section describes how to use communication styles that don't use
 connections (styles 'SOCK_DGRAM' and 'SOCK_RDM').  Using these styles,
 you group data into packets and each packet is an independent
 communication.  You specify the destination for each packet
 individually.
 
    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.
 
    The 'listen' and 'accept' functions are not allowed for sockets using
 connectionless communication styles.
 

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* Sending Datagrams    Sending packets on a datagram socket.
* Receiving Datagrams  Receiving packets on a datagram socket.
* Datagram Example     An example program: packets sent over a
                            datagram socket in the local namespace.
* Example Receiver     Another program, that receives those packets.
 

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