• paho.mqtt.android
  • active forks
• Hive MQTT Client
  • Android Installation
  • Quick start and General Documentation
  • Java Docs
  • Client Library Encyclopedia

• Current version supports API 24 and above
• Checked out

Android 4.4 has TLSv1.2 disabled. A possible workaround is to create our own socketfactory which supports TLSv1.2

• HiveMQ SSL with Eclipse might have a way for us to use our own socketfactory but not sure if this can be moved to Android
• Implementing TLSv1.2 on Android 4.4 by extending socketfactory
• Android Java extending socketfactory

• https://stackoverflow.com/questions/28329652/enabling-specific-ssl-protocols-with-android-webviewclient
• https://stackoverflow.com/questions/28943660/how-to-enable-tls-1-2-support-in-an-android-application-running-on-android-4-1
• https://stackoverflow.com/questions/60970805/android-kitkat-does-not-support-tlsv1-2
• https://stackoverflow.com/questions/45202267/android-4-1-to-4-4-kitkat-enable-tls-1-2-for-api
• https://github.com/erickok/transdroid/blob/master/app/src/main/java/org/transdroid/daemon/util/TlsSniSocketFactory.java
• https://github.com/square/okhttp/issues/2372
• https://gist.github.com/mlc/549409f649251897ebef

• Android MQTT Simple Guide (from Medium)
• Portecle: generate bks, jks and friends from certs (use this or your life will be hell)