Fix for issue #100 : Let possible to start the server on an address other than localhost

Add a new function for keeping the API stable

include/dap/network.h

@@ -44,13 +44,21 @@ class Server {
   // create() constructs and returns a new Server.
   static std::unique_ptr<Server> create();
 
-  // start() begins listening for connections on the given port.
+  // start() begins listening for connections on localhost and the given port.
   // callback will be called for each connection.
   // onError will be called for any connection errors.
   virtual bool start(int port,
                      const OnConnect& callback,
                      const OnError& onError = ignoreErrors) = 0;
 
+  // start() begins listening for connections on the given specific address and port.
+  // callback will be called for each connection.
+  // onError will be called for any connection errors.
+  virtual bool start(const char* address,
+                     int port,
+                     const OnConnect& callback,
+                     const OnError& onError = ignoreErrors) = 0;
+
   // stop() stops listening for connections.
   // stop() is implicitly called on destruction.
   virtual void stop() = 0;