Added type names to events.

src/core/curl_socket.h

@@ -50,6 +50,8 @@ public:
   CurlSocket(int fd, CurlStack* stack) : m_stack(stack) { m_fileDesc = fd; }
   ~CurlSocket();
 
+  const char*        type_name() const { return "curl"; }
+
   void               close();
 
   static int         receive_socket(void* easy_handle, curl_socket_t fd, int what, void* userp, void* socketp);
@@ -62,7 +64,7 @@ private:
   virtual void       event_write();
   virtual void       event_error();
 
-  CurlStack*     m_stack;
+  CurlStack*         m_stack;
 };
 
 }