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mod_mam_sql, mod_mam_muc_sql: Begone, unsupported and unmaintained experiments
author Kim Alvefur <zash@zash.se>
date Fri, 11 Sep 2015 10:43:16 +0200
parents 4d73a1a6ba68
children 9c9397d692aa
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1 ---
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2 labels:
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3 - 'Stage-Beta'
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4 summary: 'XEP-0198: Reliability and fast reconnects for XMPP'
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5 ...
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7 Introduction
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8 ============
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9
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10 By default XMPP is as reliable as your network is. Unfortunately in some
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11 cases that is not very reliable - in some network conditions disconnects
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12 can be frequent and message loss can occur.
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14 To overcome this, XMPP has an optional extension (XEP-0198: Stream
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15 Management) which, when supported by both the client and server, can
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16 allow a client to resume a disconnected session, and prevent message
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17 loss.
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19 Details
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20 =======
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22 When using XEP-0198 both the client and the server keep a queue of the
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23 most recently sent stanzas - this is cleared when the other end
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24 acknowledges they have received the stanzas. If the client disconnects,
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25 instead of marking the user offline the server pretends the client is
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26 still online for a short (configurable) period of time. If the client
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27 reconnects within this period, any stanzas in the queue that the client
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28 did not receive are re-sent.
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30 If the client fails to reconnect before the timeout then it is marked
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31 offline as normal, and any stanzas in the queue are returned to the
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32 sender as a "recipient-unavailable" error.
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33
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34 Configuration
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35 =============
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37 Option Default Description
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38 --------------------------- ----------------- -----------------------------------------------------------------------------------------
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39 smacks\_hibernation\_time 300 (5 minutes) The number of seconds a disconnected session should stay alive for (to allow reconnect)
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40
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41 Compatibility
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42 =============
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44 ----- --------------------------------------------------------------------------------------------------------------------------------------------------------
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45 0.9 Works
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46 0.8 Works, use version [7693724881b3](http://prosody-modules.googlecode.com/hg-history/7693724881b3f3cdafa35763f00dd040d02313bf/mod_smacks/mod_smacks.lua)
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47 ----- --------------------------------------------------------------------------------------------------------------------------------------------------------
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48
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49 Clients
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50 =======
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51
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52 Clients that support XEP-0198:
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54 - Gajim
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55 - Swift (but not resumption, as of version 2.0 and alphas of 3.0)
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56 - Psi (in an unreleased branch)
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57 - Yaxim