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(libc.info)Datagrams

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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.

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.