Update ServerManager.java
Update ServerManager.java

allow the Queclink GL200 to support UDP as well as TCP connections.  GL300 model devices (compatible with GL200 protocol, it seems) support UDP mode as well as TCP.  UDP uses less battery though, so may allow the device to run a little bit longer on a charge.
jssenyange/traccar,duke2906/traccar,AnshulJain1985/Roadcast-Tracker,joseant/traccar-1,orcoliver/traccar,jon-stumpf/traccar,ninioe/traccar,jssenyange/traccar,jon-stumpf/traccar,vipien/traccar,5of9/traccar,tsmgeek/traccar,tsmgeek/traccar,tsmgeek/traccar,tananaev/traccar,jssenyange/traccar,5of9/traccar,tananaev/traccar,orcoliver/traccar,al3x1s/traccar,stalien/traccar_test,AnshulJain1985/Roadcast-Tracker,orcoliver/traccar,renaudallard/traccar,jon-stumpf/traccar,renaudallard/traccar,duke2906/traccar,tananaev/traccar,ninioe/traccar,al3x1s/traccar,joseant/traccar-1,stalien/traccar_test,ninioe/traccar,vipien/traccar