• A network protocol to be used for communication in the groworld game

• XMPP-Core and XMPP-IM RFCs 3920 and 3921.

• RFC 2831 section 2.1.2.1

see http://xmpp.org/extensions/

• XEP-0047: In-Band Bytestreams
• XEP-0066: Out of Band Data
• XEP-0030: Service Discovery
• XEP-0060: Publish-Subscribe
• XEP-0045: Multi-User Chat
• XEP-0149: Time Periods
• XEP-0166: Jingle
• XEP-0174: Serverless Messaging
• XEP-0199: XMPP Ping
• XEP-0224: Attention
• XEP-0077: In-Band Registration