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annotate mod_host_status_heartbeat/README.markdown @ 4651:8231774f5bfd

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mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8 The `body:sub()` call risks splitting the string in the middle of a multi-byte UTF-8 sequence. This should have been caught by util.stanza validation, but that would have caused some havoc, at the very least causing the notification to not be sent. There have been no reports of this happening. Likely because this module isn't widely deployed among users with languages that use many longer UTF-8 sequences. The util.encodings.utf8.valid() function is O(n) where only the last sequence really needs to be checked, but it's in C and expected to be fast.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Aug 2021 13:22:59 +0200
parents 3f75f892a41e
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1 ---
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2 labels: Stage-Beta
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3 summary: Host status heartbeat
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4 ...
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6 Introduction
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7 ============
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9 This module integrates with [mod\_host\_status\_check] to provide heartbeats at regular intervals.
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11 The only time you will generally want this, is if you are using [mod\_component\_client] to run Prosody as
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12 an external component of another Prosody server that has [mod\_host\_status\_check] loaded and waiting for
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13 heartbeats.
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15 Alternatively you can run this on the same Prosody host as [mod\_http\_host\_status\_check] and it will simply
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16 update a variable periodically to indicate that Prosody and timers are functional.
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18 Configuration
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19 =============
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21 The following configuration options are supported:
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23 ```{.lua}
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24 -- The number of seconds to wait between sending heartbeats
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25 status_check_heartbeat_interval = 5
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27 -- Set this to "remote" (the default) if you are using mod_component_client
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28 -- and you want to send a heartbeat to a remote server. Otherwise
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29 -- set it to "local" to send to mod_host_status_check on the same server.
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30 status_check_heartbeat_mode = "remote"
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31 ```
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33 Compatibility
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34 =============
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36 Works with Prosody 0.9.x and later.