-cJSON* ves_create_common_event_header(const char *domain, const char *event_type, const char *source_name, const char *priority, int seq_id);
+cJSON* ves_create_common_event_header(const char *domain, const char *event_type, const char *hostname, int port, const char *priority, int seq_id);
+cJSON* ves_create_common_event_header_721(const char *domain, const char *event_type, const char *hostname, int port, const char *priority, int seq_id, const char *stnd_defined_namespace);