2. è¦æ ¼ RFC2779: IM requirements RFC3920: XMPP Core RFC3921: XMPP IM & Presence XEP-0030: Service Discovery XEP-0045: Multi-User Chat 沢山ãããã©ï¼åºæ¬ã¯ãããªæã 3. JID åãã¼ã㯠1023B ä»¥ä¸ â @ â ã¨ã â / â ã¨ããå«ã㦠3071B ä»¥ä¸ IPv4address / IPv6address = address-literal ( internationalized domain label ) = sub-domain ( sub-domain 1 * ( â . â sub-domain ) ) = fqdn fqdn / address-literal = domain [ node â @ â ] domain [ â /
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