Added registration of port 5280 with IANA.
This document requires no interaction with &IANA;.
+TCP port 5280 is conventionally used for communication between BOSH clients and BOSH connection managers (where the number 52 is common to ports 5222 and 5269 used in XMPP and 80 is the same as the port used in HTTP). Although use of this port is OPTIONAL, it is helpful to define this port in a standardized way so that BOSH clients can contact any given XMPP service via BOSH without the need for DNS TXT records (see &xep0156;) or more advanced methods such as U-NAPTR. Therefore, this document directs the ®ISTRAR; to register TCP port 5280 with the IANA for inclusion in its port registry at &ianaports;, in accordance with &xep0053;.
+The following registration data will be provided at <http://www.iana.org/cgi-bin/usr-port-number.pl>, where the registrant name and email address will be "XMPP Registrar" and "registrar@xmpp.org" respectively.
+The ®ISTRAR; includes 'http://jabber.org/protocol/httpbind' in its registry of protocol namespaces.
+The XMPP Registrar includes 'http://jabber.org/protocol/httpbind' in its registry of protocol namespaces.