TncProto: add stop() method for smarter protos (Kenwood)

src/backend/BluetoothTnc.scala

@@ -180,6 +180,8 @@ class BluetoothTnc(service : AprsService, prefs : PrefsWrapper) extends AprsBack
 
 		def shutdown() {
 			Log.d(TAG, "shutdown()")
+			if (proto != null)
+				proto.stop()
 			this.synchronized {
 				catchLog("socket.close", socket.close)
 			}

src/backend/TcpUploader.scala

@@ -210,6 +210,8 @@ class TcpUploader(service : AprsService, prefs : PrefsWrapper) extends AprsBacke
 
 		def shutdown() {
 			Log.d(TAG, "shutdown()")
+			if (tnc != null)
+				tnc.stop()
 			this.synchronized {
 				catchLog("shutdownInput", socket.shutdownInput)
 				catchLog("shutdownOutput", socket.shutdownOutput)

src/backend/UsbTnc.scala

@@ -164,6 +164,7 @@ class UsbTnc(service : AprsService, prefs : PrefsWrapper) extends AprsBackend(pr
 				service.postSubmit(line)
 			}
 			Log.d(TAG, "terminate()")
+			proto.stop()
 		}
 
 

src/tncproto/TncProto.scala

@@ -6,4 +6,5 @@ import _root_.net.ab0oo.aprs.parser._
 abstract class TncProto(is : InputStream, os : OutputStream) {
 	def readPacket() : String
 	def writePacket(p : APRSPacket)
+	def stop() {}
 }