better constructor visibility control

Author: melode11

src/internal/sio_client_impl.cpp

@@ -433,7 +433,7 @@ namespace sio {
         }
         else
         {
-            std::pair<const std::string, socket::ptr> p(aux,std::make_shared<sio::socket>(this,aux));
+            std::pair<const std::string, socket::ptr> p(aux,std::shared_ptr<sio::socket>(new sio::socket(this,aux)));
             return (m_sockets.insert(p).first)->second;
         }
     }

src/sio_client.h

@@ -56,6 +56,10 @@ namespace sio {
         std::string const& get_sessionid() const;
 
     private:
+        //disable copy constructor and assign operator.
+        client(client const& cl){}
+        void operator=(client const& cl){}
+        
         client_impl* m_impl;
     };
 

src/sio_socket.h

@@ -52,8 +52,6 @@ namespace sio
 
         typedef std::shared_ptr<socket> ptr;
 
-        socket(client_impl*,std::string const&);
-        
         ~socket();
 
         void on(std::string const& event_name,event_listener const& func);
@@ -88,6 +86,8 @@ namespace sio
         std::string const& get_namespace() const;
 
     protected:
+        socket(client_impl*,std::string const&);
+
         void on_connected();
 
         void on_close();
@@ -99,6 +99,10 @@ namespace sio
         friend class client_impl;
 
     private:
+        //disable copy constructor and assign operator.
+        socket(socket const& sock){}
+        void operator=(socket const& sock){}
+
         class impl;
         impl *m_impl;
     };