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STRUCTS_TYPE_ETHER(3)	 BSD Library Functions Manual	 STRUCTS_TYPE_ETHER(3)

NAME
     structs_type_dnsname -- structs type for DNS resolvable hostnames

LIBRARY
     PDEL Library (libpdel, -lpdel)

SYNOPSIS
     #include <sys/types.h>
     #include <pdel/structs/structs.h>
     #include <pdel/structs/type/array.h>
     #include <pdel/structs/type/dnsname.h>

     extern const struct structs_type structs_type_dnsname;

DESCRIPTION
     structs_type_dnsname is a structs(3) types	for DNS	resolvable hostnames.
     The represented data structure is a struct	structs_dnsname, which con-
     tains both	the ASCII hostname and an array	of one or more IP addresses
     that resulted from	a DNS lookup:

	DEFINE_STRUCTS_ARRAY(structs_dnsname_ips, struct in_addr);

	struct structs_dnsname {
	    const char			*name;	/* dns name to look up */
	    struct structs_dnsname_ips	ips;	/* array of >= 1 ip addrs */
	};

     The ASCII representation of this type is just the hostname.  When this
     ASCII form	is converted to	native binary form, a DNS lookup is performed
     and the ips array is filled in with the result.  If the DNS lookup	fails,
     so	too does the ASCII conversion.

SEE ALSO
     libpdel(3), structs(3), structs_type(3), structs_type_array(3)

HISTORY
     The PDEL library was developed at Packet Design, LLC.
     http://www.packetdesign.com/

AUTHORS
     Archie Cobbs <archie@freebsd.org>

BUGS
     This type could be	made more general, for example supporting MX records
     or	IPv6 addresses.

BSD				April 22, 2002				   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS | BUGS

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