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30 .\" @(#)cltp.4 8.1 (Berkeley) 6/9/93
39 Connectionless Transport Protocol
44 .Fn socket AF_ISO SOCK_DGRAM 0
47 is a simple, unreliable datagram protocol which is accessed
54 sockets are connectionless, and are
55 normally used with the
61 call may also be used to fix the destination for future
62 packets (in which case the
70 system calls may be used).
73 address formats are identical to those used by TP.
76 provides a service selector in addition
82 space is separate from the TP selector space (i.e. a
91 network level may be used with
96 A socket operation may fail with one of the following errors returned:
97 .Bl -tag -width [EADDRNOTAVAIL]
99 when trying to establish a connection on a socket which
100 already has one, or when trying to send a datagram with the destination
101 address specified and the socket is already connected;
103 when trying to send a datagram, but
104 no destination address is specified, and the socket hasn't been
107 when the system runs out of memory for
108 an internal data structure;
111 is made to create a socket with a selector which has already been
113 .It Bq Er EADDRNOTAVAIL
114 when an attempt is made to create a
115 socket with a network address for which no network interface