XMPP Notification Support

[caronc]

A request was made (Reference) inquiring on XMPP support.

The URL syntax might look as follows:

• unsecure: xmpp://user:password@serverhost:port/
• secure: xmpps://user:password@serverhost:port/

According to Wikipedia, the default port if none is specified should be 5222 where as the SSL version (xmpps://) would be 5223.

Notes:

• A good reference library might be xmpp, but it hasn't been maintained for 9 years.
• The user who made the request also provided an example wrapper written in GO (xmppsend) that performs the similar task.

[caronc]

XMPP support now available on new branch here.

It requires sleekxmpp to work correctly:

pip install sleekxmpp

Current Status: Branch requires more testing and unit tests before it will be merged into master.
Considerations: sleekxmpp hasn't been maintained in years, but is licensed under MIT. It might be worth just branching it and applying some of the pull requests to it that have been lingering for a while. In addition to that, it would just include it as part of this module so XMPP would work out of the box.

[caronc]

feature merged

[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