Move from unmaintained knolleary/pubsubclient to hmueller01/pubsubclient3#212
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absalom-muc merged 1 commit intoabsalom-muc:masterfrom Nov 19, 2025
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As stated in the README, the latest version 2.8.0 of PubSubClient is broken, and it is very unlikely that the fix PR knolleary/pubsubclient#1020 will ever be merged.
The library is unmaintained. This is officially confirmed by the author in knolleary/pubsubclient#1045. There are some maintained forks, though. An up-to-date and maintained fork containing all outstanding fixes is https://github.com/hmueller01/pubsubclient3. It is available in the Arduino IDE under the distinct name PubSubClient3, while the code is backwards-compatible.
The currently recommended workaround is to downgrade PubSubClient to 2.7.0. I suggest to use PubSubClient3 instead. This would save developers from accidently updating the library PubSubClient to broken version 2.8.0.