Re-add XMPP support

[mbeko]

Description:

Related issue (if applicable): #497

I have updated the code according to the Slixmpp documentation to make it work with version 1.12.0.
You might want to go through the commits one by one to see which changes I had to make.

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• No lint errors (use tox -e lint and even tox -e format to autofix what it can)
• Test coverage added (use tox -e minimal)

Testing

I have successfully verified this by installing Slixmpp 1.12.0 via Pipenv, and calling:

 ./bin/apprise -vvvvvv -b "Test message" "xmpp://${username}:${password}@${host}"
 ./bin/apprise -vvvvvv -b "Test message" "xmpp://${username}:${password}@${host}?to=${target username}"
 ./bin/apprise -vvvvvv -b "Test message" "xmpp://${username}:${password}@${host}:${port}?to=${target username}"

I would need support with the following tasks:

• Testing for issues that occurred in the past
• Fix the conflicts in README.md (e.g. the jid parameter doesn't seem to work) and packaging/redhat/python-apprise.spec
• Re-add and update the required documentation, e.g. a wiki page
• Get rid of the error at the end:

  2025-12-11 23:37:16,135 - ERROR - Task was destroyed but it is pending!
  task: <Task cancelling name='Task-1' coro=<XMLStream.run_filters() running at /home/<REDACTED>/.local/share/virtualenvs/apprise-4MG-Z_Iy/lib/python3.12/site-packages/slixmpp/xmlstream/xmlstream.py:1276> wait_for=<Future cancelled>>
  

[codecov]

Codecov Report

❌ Patch coverage is 59.06040% with 61 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.41%. Comparing base (cbc97ce) to head (2d50a20).
⚠️ Report is 22 commits behind head on master.

Files with missing lines	Patch %	Lines
apprise/plugins/NotifyXMPP/SliXmppAdapter.py	60.25%	28 Missing and 3 partials ⚠️
apprise/plugins/NotifyXMPP/__init__.py	57.14%	26 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1468      +/-   ##
==========================================
- Coverage   99.66%   99.41%   -0.26%     
==========================================
  Files         179      181       +2     
  Lines       23591    23750     +159     
  Branches     3815     3839      +24     
==========================================
+ Hits        23513    23611      +98     
- Misses         70      124      +54     
- Partials        8       15       +7     

Files with missing lines	Coverage Δ
apprise/plugins/__init__.py	100.00% <100.00%> (ø)
apprise/plugins/NotifyXMPP/__init__.py	57.14% <57.14%> (ø)
apprise/plugins/NotifyXMPP/SliXmppAdapter.py	60.25% <60.25%> (ø)

... and 2 files with indirect coverage changes

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[caronc]

A couple of comments on your first attempt to restore; if we're going to bring it back as it was that will contradict the original setup a bit...

1. i would make it so xep entries are no longer allowed to be provided... only set the ones needed to send a message (since that is all we are doing anyway) and disconnect.
2. have a look at some of the newer ways of doing some fo the code... we need new functions __len__ and url_identifier (see here).
3. packaging/*.spec file should be easy to fix, just merge with rebase of master and make only the changes needed. Looks like it's a half-broken merge.
4. README.md has some merge issues you'll need to fix

Thoughts?

[mbeko]

Thanks for your feedback! I will take care of points 1 and 2. Regarding the conflicts in points 3 and 4, I mentioned them in the PR description. I'm unsure which parts are outdated, so I hoped someone with more knowledge can help out. But I'll see what I can do on my own.

I'll try to work on that tomorrow. If I don't manage, I can only get back to it about one week later

[mbeko]

I removed the possibility to provide XEPs, and implemented the new plugin functions. I'll try to take care of the merge issues in the next days.

By the way, the demo plugin wiki pages don't mention the new functions. You might want to add them there

[mbeko]

I removed the merge conflicts. However, I now noticed that the tests have been previously skipped because I didn't run them in the environment that contained Slixmpp. When I actually ran them, they failed, so I'll have to look into that

[caronc]

Closing in favor of #1505 ; Thank you for all of your hard work here. Your intentions were really great!

[mbeko]

Thank you so much for picking up the issue, and fixing everything properly! I'm very happy to have XMPP working again after those four years 🎉

[Neustradamus]

After the XMPP support removal, it has been added a new time!

Linked to:

• https://github.com/caronc/apprise/issues?q=is%3Aissue+xmpp
• https://github.com/caronc/apprise/pulls?q=is%3Apr+xmpp

Issues:

• XMPP Notification Support #40
• XMPP Notifications do not work #213
• Can't send message through XMPP #227
• Has anyone managed to send an Apprise/XMPP message? #455
• XMPP still not working #497
• XMPP - sleekxmpp appears to be broken #553
• wiki documents xmpp, but valid xmpp URIs are rejected as malformed #731
• Email notifications have empty CC: field even if there are no CC: recipients #734
• Maintain connections to servers to reduce latency #735

PRs:

• XMPP Notification Support; refs #40 #90
• XMPP timeout added #215
• Fix XMPP plugin #217
• Refactored XMPP notification service #220
• slixmpp library support added to XMPP plugin #240
• Add paho-mqtt to install dependencies. #447
• Fixed XMPP Support & SleekXMPP dropped #485
• Eliminate / from appearing in XMPP targets #487
• XMPP Refactoring #511
• Removal of XMPP support due to instability #619
• CI: Enable testing on macOS and Windows #707
• [WIP] Revert "Removal of XMPP support due to instability" #743
• Re-add XMPP support #1468
• XMPP support restored using Slixmpp #1505
• Fixed handling of XMPP Title/Subject #1507
• xmpp:// ?keepalive=yes (xep_keepalive) support added #1509
• Prevent XMPP racing condition causing test failures at random times #1526