+extern zend_class_entry *HTTP_EX_CE(runtime);
+extern zend_class_entry *HTTP_EX_CE(header);
+extern zend_class_entry *HTTP_EX_CE(malformed_headers);
+extern zend_class_entry *HTTP_EX_CE(request_method);
+extern zend_class_entry *HTTP_EX_CE(message_type);
+extern zend_class_entry *HTTP_EX_CE(invalid_param);
+extern zend_class_entry *HTTP_EX_CE(encoding);
+extern zend_class_entry *HTTP_EX_CE(request);
+extern zend_class_entry *HTTP_EX_CE(request_pool);
+extern zend_class_entry *HTTP_EX_CE(socket);
+extern zend_class_entry *HTTP_EX_CE(response);
+extern zend_class_entry *HTTP_EX_CE(url);