This code implements RFC 2782 (SRV records). It was originally
written for jabber.el , but is now a
separate package.
It is used to look up hostname and port for a service at a specific
domain. There might be multiple results, and the caller is supposed
to attempt to connect to each hostname+port in turn. For example,
to find the XMPP client service for the domain gmail.com:
(srv-lookup "_xmpp-client._tcp.gmail.com")
-> (("xmpp.l.google.com" . 5222)
("alt3.xmpp.l.google.com" . 5222)
("alt4.xmpp.l.google.com" . 5222)
("alt1.xmpp.l.google.com" . 5222)
("alt2.xmpp.l.google.com" . 5222))