DesignXMPP im » History » Revision 2
Revision 1 (Anonymous, 02/29/2012 12:34 PM) → Revision 2/29 (Anonymous, 02/29/2012 03:32 PM)
= Gateway for Instant Messaging= [[TOC(DesignXMPP_im, depth=2)]] In XMPP there are several types of messages which lead to different semantics when exchanging XMPP ''message stanzas'' between 2 endpoints. This section focuses only on message types that allow 2 endpoints to send instant messages to each other. Message types: * Normal: the default message type. A reply is not expected from the recipient. * Chat: This message type implies both parties have engaged a conversation. * Headline: An endpoint receiving this type of message should never reply, since it's meant to be used by servers or other entities to deliver announcements. In SIP there are currently 2 ways of doing Instant Messaging: * SIP MESSAGE (RFC 3428) * MSRP (RFC 4975) The first one is session-less and the latter is session based. The mechanisms described here follow the currently available specifications for SIP-XMPP interoperability: * http://xmpp.org/internet-drafts/draft-saintandre-sip-xmpp-im-01.html * http://xmpp.org/internet-drafts/draft-saintandre-sip-xmpp-chat-03.html == XMPP single message <-> SIP MESSAGE == XMPP single messages are mapped directly to SIP MESSAGE requests and ''vice versa''. TODO (image)