Mercurial > prosody-modules
view mod_throttle_presence/README.markdown @ 4651:8231774f5bfd
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 | 79b9bd84b91c |
children |
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--- labels: - 'Stage-Beta' summary: Limit presence stanzas to save traffic ... Introduction ============ For most people 'presence' (status changes) of contacts make up most of the traffic received by their client. However much of the time it is not essential to have highly accurate presence information. This module automatically cuts down on presence traffic when clients indicate they are inactive (using the [CSI protocol](mod_csi.html)). This is extremely valuable for mobile clients that wish to save battery power while in the background. Configuration ============= Just load the module (e.g. in modules\_enabled). There are no configuration options. Compatibility ============= ----- ------- 0.9 Works ----- -------