When initially run, a messaging client typically shows some list of contacts and chatrooms, and whether any new messages are present in each.
The current mechanism for achieving this UX involves a complete synchronization of the server-side archive, and is both time-consuming and bandwidth-intensive. This specification proposes a solution to directly obtain such data from the server.
Moreover, the information gathered by the server to support this can be used in support of mobile push notifications.
The Inbox consists semantically of a list of conversations in order of last activity. Each conversation is identified by a jid - for group chats this would be the chatroom, and for individual contacts this would be their bare jid.
Each Inbox entry includes a count of messages considered new, the last MAM stanza-id relating to this conversation, and the last MAM result for this conversation, as defined by Message Archive Management (XEP-0313) . In addition, a client-controlled boolean marker can be used to indicate a manual "set unread" state.
Finding more messages from this conversation can be achieved via a MAM query using
with to specify the
An <iq/> of type "get" is used, containing a single element
<inbox/>, containing an optional RSM
filter as specified by Result Set Management (XEP-0059) . This will typically be sent only to the user's own bare jid. If a client
requests the inbox without RSM, the server MAY limit the number of conversations arbitrarily by either time or number. This element has a number of attributes:
unread-only- Defaults to false. If true, the server will list only conversations with at least one unread message.
messages- Defaults to true. If true, the server includes the last message; if false, this is elided.
responds with a sequence of <message/> stanzas, each containing an
<entry/> element qualified by the
urn:xmpp:inbox:1 namespace with a number of attributes:
jid- contains the Jid of the conversation for this entry.
unread- contains a count of messages which are deemed to be unread by the server. Clients may use this to indicate unread messages to the user.
id- contains the last id in the MAM archive for this conversation. Clients may use this as a marker to fetch additional messages (or collated fastenings, see MAM Fastening Collation (XEP-0427) ) about the conversation via MAM.
messages attribute is missing or set to
<entry/> element is followed by the latest instant message, if any, which is encapsulated as a
<result/> element as defined by Message Archive Management (XEP-0313) . This contains collated fastenings if supported by the
After all entries required have been returned, the server then responds with an <iq/> result containing a
<fin/> element qualified by
urn:xmpp:inbox:1. This contains the RSM data, a total count of conversation
entries within the inbox, a count of conversations with unread messages, and a total count of unread messages.
Servers MUST track which instant messages sent to clients remain unread.
Let us assume a user has only three jids they have exchanged messages with. Asking for their inbox is simple:
The server responds with a list of conversations:
id of a conversation has changed, a client might fetch the missing messages and metadata by requesting the MAM archive
jid of the entry, and
after the previous known
id for the conversation.
After the list of conversations, the server completes its response with a the reply to the original IQ.
TODO - Hopefully roughly given by the examples.
This XEP requires no interaction with the Internet Assigned Numbers Authority (IANA) .
The author notes that this protocol is heavily based on the
mod_inbox system of MongooseIM. In addition, Kevin Smith and several others at the XMPP Summit 24 provided useful feedback which has shaped this specification.
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