Server drops client connections

[cyates559]

Original Issue: CSUMB-SP17-CST438/discotheque#115

This issue is not resolved. After a very long time of listening to music, I found that my app crashed

E/DTK Socket: the main socket was disconnected
E/AndroidRuntime: FATAL EXCEPTION: Thread-3
Process: edu.jocruzcsumb.discotheque, PID: 25806
junit.framework.AssertionFailedError
at junit.framework.Assert.fail(Assert.java:48)
at junit.framework.Assert.fail(Assert.java:56)
at edu.jocruzcsumb.discotheque.Log.wtf(Log.java:143)
at edu.jocruzcsumb.discotheque.Sockets.getSocket(Sockets.java:104)
at edu.jocruzcsumb.discotheque.Sockets$SocketWaiter.getArray(Sockets.java:252)
at edu.jocruzcsumb.discotheque.PickFloorActivity$2.run(PickFloorActivity.java:94)
at java.lang.Thread.run(Thread.java:761)