Mercurial > prosody-modules

annotate mod_client_proxy/README.markdown @ 5668:ecfd7aece33b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_measure_modules: Report module statuses via OpenMetrics Someone in the chat asked about a health check endpoint, which reminded me of mod_http_status, which provides access to module statuses with full details. After that, this idea came about, which seems natural. As noted in the README, it could be used to monitor that critical modules are in fact loaded correctly. As more modules use the status API, the more useful this module and mod_http_status becomes.
author Kim Alvefur <zash@zash.se>
date Fri, 06 Oct 2023 18:34:39 +0200
parents 3dd7840cb923
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3098
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
1 ---
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
2 labels:
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
3 - 'Stage-Alpha'
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
4 summary: 'Proxy multiple client resources behind a single component'
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
5 ...
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
6
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
7 What it does
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
8 ============
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
9
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
10 This module must be used as a component. For example:
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
11
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
12 Component "proxy.domain.example" "client_proxy"
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
13 target_address = "some-user@some-domain.example"
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
14
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
15 All IQ requests against the proxy host (in the above example:
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
16 proxy.domain.example) are sent to a random resource of the target address (in
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
17 the above example: some-user@some-domain.example). The entity behind the
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
18 target address is called the "implementing client".
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
19
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
20 The IQ requests are JAT-ed (JAT: Jabber Address Translation) so that when the
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
21 implementing client answers the IQ request, it is sent back to the component,
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
22 which reverts the translation and routes the reply back to the user.
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
23
4318
3dd7840cb923 mod_client_proxy: Fix typo in readme
Jonas Schäfer <jonas@wielicki.name>
parents: 3102
diff changeset
24 Let us assume that user@some-domain.example sends a request. The
3098
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
25 proxy.domain.example component has the client_proxy module loaded and proxies to
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
26 some-user@some-domain.example. some-user@some-domain.example has two resources,
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
27 /a and /b.
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
28
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
29 user -> component:
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
30 <iq type='get' id='1234' to='proxy.domain.example' from='user@some-domain.example/abc'>
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
31 component -> implementing client:
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
32 <iq type='get' id='1234' to='some-user@some-domain.example/a' from='proxy.domain.example/encoded-from'>
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
33 implementing client -> component:
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
34 <iq type='result' id='1234' to='proxy.domain.example/encoded-from' from='some-user@some-domain.example/a'>
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
35 component -> user:
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
36 <iq type='result' id='1234' to='user@some-domain.example/abc' from='proxy.domain.example'>
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
37
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
38 The encoded-from resource used in the exchange between the proxy component
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
39 and the implementing client is an implementation-defined string which allows
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
40 the proxy component to revert the JAT.
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
41
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
42
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
43 Use cases
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
44 =========
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
45
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
46 * Implementation of services within clients instead of components, thus making
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
47 use of the more advanced authentication features.
3102
f04dbfad5407 mod_client_proxy: extend readme
Jonas Wielicki <jonas@wielicki.name>
parents: 3098
diff changeset
48 * Load-balancing requests to different client resources.
3098
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
49 * General evilness
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
50
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
51
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
52 Configuration
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
53 =============
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
54
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
55 To use this module, it needs to be loaded on a component:
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
56
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
57 Component "proxy.yourdomain.example" "client_proxy"
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
58 target_address = "implementation@yourdomain.example"
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
59
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
60 It will then send a subscription request to implementation@yourdomain.example
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
61 which MUST be accepted: this is required so that the component can detect the
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
62 resources to which IQ requests can be dispatched.
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
63
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
64
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
65 Limitations
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
66 ===========
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
67
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
68 * It does not handle presence or message stanzas.
a81456a13797 mod_client_proxy: a Jabber Address Translation implementation
Jonas Wielicki <jonas@wielicki.name>
parents:
diff changeset
69 * It does not allow the implementing client to initiate IQ requests