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Also special thanks to timeless, for wordlessly reminding me to check
for typos.
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XEP-0060 says that this the way to indicate that 'persistent-items' is
unsupported, but doesn't explicitly say if it being disabled in the node
configuration also counts as unsupported.
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When set to 'false' there is no need for a persistence interface at all,
since items are not persisted after being broadcast.
Had started wondering if maybe the behavior was wrong, after reading
parts of XEP-0060 that pointed in that direction.
Some discussion of this can be found in logs of
xmpp:xsf@muc.xmpp.org?join from around 2021-07-20
Thanks to Ralph for confirming.
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Since nodes were always persistent according to the XEP-0060 definition.
Whether data is stored in memory or on disk was not what this setting
was meant for.
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This is in preparation for fixing the behavior of 'persist_items', which
was misunderstood at some point. In mod_pep it toggles between
persistent storage and in-memory storage, while the correct behavior
would be to toggle whether published items are stored at all or
forgotten after being broadcast.
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In some cases you might end up with both 'xmpp.example.com' and
'xmpp.example.com.', which are the same thing so no point in doing the
same checks twice.
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Clients would try to connect and receive an error or timeout, increasing
the time it takes to establish a connection. Probably not what you want.
If you really want IPv6 or IPv4 disabled, best remove the A or AAAA record.
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Why would you do this?!
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If you set 'use_ipv4 = false' then you probably don't care much for the
host not resolving to the IPv4 address, and same with 'use_ipv6'.
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This may have mistakenly caused link-local addresses to be considered
global. May have caused mod_s2s and prosodyctl check dns to behave
incorrectly on networks using link-local IPv4 addresses. By my
guesstimate, these are extremely rare. Probably minimal impact beyond
a bit longer to establish s2s and some possible confusion from
prosodyctl check dns results.
Ref RFC 3927
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This should a) prevent injection of text that looks like legitimate log
lines and b) not mangle tracebacks.
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Made the pattern match a longer range than intended, but with no effect
since those characters are not present in the 'control_symbols' table.
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If unbound was initialized prior to this then the config change here
wouldn't apply, and it will again think that 127.0.1.1 has been found
in DNS.
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I've had this color theme in a local debug module for some time and I
quite like it. The colors are from the XMPP logo.
Removes extra XML serialization implementation in favor of the standard
one. Also removes recursive str=str..more string building.
The new two-level gsub has the accumulator in C space so shouldn't be
too bad. The inner gsub calls use no callback, so should be fast and
not create all that much garbage.
No serious benchmarking has been done, but who cares if it looks nice?
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Always enable pretty printing if util.termcolours is available
util.termcolours can be nooped out to disable pretty printing.
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This should offer some protection against doing evil things to
terminals. Doesn't protect against pure broken UTF-8 garbage however.
See #734
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thought)
Character sequences could be split across chunk boundaries. Would require a bunch
of code to make that work reliably.
Only apply front_consumed on first chunk, and adjust buffer_pos accordingly.
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Makes merges and diffs easier to read and deal with, especially when
using tools to gather options from the codebase.
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This fixes wrongly reported DNS problems on some distros where the hosts
file contains an entry for the local machine, pointing at a loopback
address such as 127.0.1.1 or similar.
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net.dns returns nil for NXDOMAIN, while net.unbound returns a table with
zero items and various status fields.
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Lua 5.1 (thanks sups)
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"%g" turns 1GB into 1.07374e+09, which is a bit awkward for the bytes
measurements IMO. Turning up the precision, at "%.17g" turns 0.1 into
0.10000000000000001 while "%0.16" gives 0.1, hiding most of those pesky
floating point artefacts. Lua version 5.2 uses "%.14g" ( see
LUA_NUMBER_FMT in luaconf.h.html ) so it seems like a sensible choice
here.
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This allows the user to detect whether the cursor is currently
at the top of the stanza. This will be used by util.xmppstream
to be able to port it over.
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This should not be possible, but a traceback indicating node_data being
nil here was reported by Ron in the chat.
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stream
This may be useful for any plugins that want to experiment with different policies
for stanza size limits (e.g. unauthenticated vs authenticated streams).
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Testing has demonstrated that the default GC parameters are not
sufficient to prevent runaway memory growth when running under Lua 5.2
and Lua 5.3.
Setting the GC speed to 500 was tested on Lua versions 5.1->5.4 and did
not display unbounded memory growth.
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The metric subsystem of Prosody has had some shortcomings from
the perspective of the current state-of-the-art in metric
observability.
The OpenMetrics standard [0] is a formalization of the data
model (and serialization format) of the well-known and
widely-used Prometheus [1] software stack.
The previous stats subsystem of Prosody did not map well to that
format (see e.g. [2] and [3]); the key reason is that it was
trying to do too much math on its own ([2]) while lacking
first-class support for "families" of metrics ([3]) and
structured metric metadata (despite the `extra` argument to
metrics, there was no standard way of representing common things
like "tags" or "labels").
Even though OpenMetrics has grown from the Prometheus world of
monitoring, it maps well to other popular monitoring stacks
such as:
- InfluxDB (labels can be mapped to tags and fields as necessary)
- Carbon/Graphite (labels can be attached to the metric name with
dot-separation)
- StatsD (see graphite when assuming that graphite is used as
backend, which is the default)
The util.statsd module has been ported to use the OpenMetrics
model as a proof of concept. An implementation which exposes
the util.statistics backend data as Prometheus metrics is
ready for publishing in prosody-modules (most likely as
mod_openmetrics_prometheus to avoid breaking existing 0.11
deployments).
At the same time, the previous measure()-based API had one major
advantage: It is really simple and easy to use without requiring
lots of knowledge about OpenMetrics or similar concepts. For that
reason as well as compatibility with existing code, it is preserved
and may even be extended in the future.
However, code relying on the `stats-updated` event as well as
`get_stats` from `statsmanager` will break because the data
model has changed completely; in case of `stats-updated`, the
code will simply not run (as the event was renamed in order
to avoid conflicts); the `get_stats` function has been removed
completely (so it will cause a traceback when it is attempted
to be used).
Note that the measure_*_event methods have been removed from
the module API. I was unable to find any uses or documentation
and thus deemed they should not be ported. Re-implementation is
possible when necessary.
[0]: https://openmetrics.io/
[1]: https://prometheus.io/
[2]: #959
[3]: #960
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E.g. `prosodyctl shell module reload disco example.com` becomes
equivalent to `prosodyctl shell 'module:reload("disco", "example.com")`.
Won't work for every possible command, but reduces the amount of shell
quoting problems for most common commands.
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If network_settings.opportunistic_writes is enabled then this would
previously have resulted in two socket writes, and possibly two packets
being sent. This caused some issues in older versions of Gajim, which
apparently expected the stream opening in the first packet, and thus it
could not connect.
With this change and opportunistic_writes enabled, the first packet
should contain both the xml declaration and the stream open tag.
Without opportunistic_writes, there should be no observable change.
Tested with Gajim 1.1.2 (on same machine). Unsure if loopback behaves
differently than the network here.
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Fixes that luarocks defaults to installing the rock for its own runtime
version of Lua.
This only works with luarocks 3.x, it does nothing on 2.x as currently
available from Debian.
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