partial fix for #608 - when a new TCP API connection arrives, close old one completely

src/mesh/PhoneAPI.cpp

@@ -21,11 +21,17 @@ void PhoneAPI::init()
     observe(&service.fromNumChanged);
 }
 
+PhoneAPI::~PhoneAPI() {
+    close();
+}
+
 void PhoneAPI::close() {
     unobserve();
     state = STATE_SEND_NOTHING;
+    bool oldConnected = isConnected;
     isConnected = false;
-    onConnectionChanged(isConnected);
+    if(oldConnected != isConnected)
+        onConnectionChanged(isConnected);
 }
 
 void PhoneAPI::checkConnectionTimeout()

src/mesh/PhoneAPI.h

@@ -55,12 +55,15 @@ class PhoneAPI
   public:
     PhoneAPI();
 
+    /// Destructor - calls close()
+    virtual ~PhoneAPI();
+
     /// Do late init that can't happen at constructor time
     virtual void init();
 
     // Call this when the client drops the connection, resets the state to STATE_SEND_NOTHING
-    // Unregisters our observer
-    void close();
+    // Unregisters our observer.  A closed connection **can** be reopened by calling init again.
+    virtual void close();
 
     /**
      * Handle a ToRadio protobuf