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mod_smacks: Send out more ack requests where needed Under some circumstances it was possible that more than "max_unacked_stanzas" where left in the outgoing stanza queue without forcing an ack. This could happen, when more stanzas entered the queue while the last ack request was still unanswered. Now the test "#queue > max_unacked_stanzas" is done upon receiving an ack as well as when sending out stanzas, which fixes this bug.
author tmolitor <thilo@eightysoft.de>
date Sun, 12 Feb 2017 19:27:50 +0100
parents 66aaf7c3cb29
children 4bf60727459b
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1 ---
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2 labels:
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3 - 'Stage-Alpha'
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4 summary: 'XEP-0355 (Namespace Delegation) implementation'
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5 ...
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6
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7 Introduction
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8 ============
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9
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10 Namespace Delegation is an extension which allows server to delegate
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11 some features handling to an entity/component. Typical use case is an
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12 external PEP service, but it can be used more generally when your
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13 prefered server lack one internal feature and you found an external
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14 component which can do it.
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15
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16 Details
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17 =======
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18
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19 You can have all the details by reading the
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20 [XEP-0355](http://xmpp.org/extensions/xep-0355.html). Only the admin
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21 mode is implemented so far.
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22
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23 Usage
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24 =====
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25
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26 To use the module, like usual add **"delegation"** to your
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27 modules\_enabled. Note that if you use it with a local component, you
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28 also need to activate the module in your component section:
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29
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30 modules_enabled = {
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31 [...]
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32
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33 "delegation";
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34 }
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35
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36 [...]
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37
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38 Component "youcomponent.yourdomain.tld"
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39 component_secret = "yourpassword"
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40 modules_enabled = {"delegation"}
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41
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42 then specify delegated namespaces **in your host section** like that:
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43
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44 VirtualHost "yourdomain.tld"
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45
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46 delegations = {
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47 ["urn:xmpp:mam:0"] = {
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48 filtering = {"node"};
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49 jid = "pubsub.yourdomain.tld";
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50 },
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51 ["http://jabber.org/protocol/pubsub"] = {
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52 jid = "pubsub.yourdomain.tld";
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53 },
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54 }
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56 Here all MAM requests with a "node" attribute (i.e. all MAM pubsub
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57 request) will be delegated to pubsub.yourdomain.tld. Similarly, all
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58 pubsub request to the host (i.e. the PEP requests) will be delegated to
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59 pubsub.yourdomain.tld.
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60
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61 **/! Be extra careful when you give a delegation to an entity/component,
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62 it's a powerful access, only do it if you absoly trust the
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63 component/entity, and you know where the software is coming from**
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64
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65 Configuration
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66 =============
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67
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68 The configuration is done with a table which map delegated namespace to
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69 namespace data. Namespace data MUST have a **jid** (in the form **jid =
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70 "delegated@domain.tld"**) and MAY have an additional **filtering**
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71 array. If filtering is present, request with attributes in the array
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72 will be delegated, other will be treated normally (i.e. by Prosody).
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73
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74 If your are not a developper, the delegated namespace(s)/attribute(s)
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75 are most probably specified with the external component/entity you want
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76 to use.
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77
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78 Compatibility
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79 =============
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80
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81 If you use it with Prosody 0.9 and a component, you need to patch
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82 core/mod\_component.lua to fire a new signal. To do it, copy the
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83 following patch in a, for example, /tmp/component.patch file:
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84
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85 diff --git a/plugins/mod_component.lua b/plugins/mod_component.lua
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86 --- a/plugins/mod_component.lua
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87 +++ b/plugins/mod_component.lua
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88 @@ -85,6 +85,7 @@
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89 session.type = "component";
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90 module:log("info", "External component successfully authenticated");
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91 session.send(st.stanza("handshake"));
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92 + module:fire_event("component-authenticated", { session = session });
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93
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94 return true;
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95 end
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96
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97 Then, at the root of prosody, enter:
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98
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99 `patch -p1 < /tmp/component.patch`
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100
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101 ----- ----------------------------------------------------
1993
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102 0.10 Works
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103 0.9 Need a patched core/mod\_component.lua (see above)
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104 ----- ----------------------------------------------------
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105
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106 Note
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107 ====
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108
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109 This module is often used with mod\_privilege (c.f. XEP for more
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110 details)