Add function definition to header file

includes/sock.hpp

@@ -56,6 +56,9 @@ public:
 	/* Returns socket identifier */
 	int getSockFD();
 
+	/* Returns whether or not the given socket is connected to a remote address */
+	bool has_remote_address();
+
 	/* This is a pure virtual function (AKA an abstract function). It's purpose
 	is to be redefined by the children classes (client and server). */
 	virtual int get_type() = 0;