# define BIG_BUFFER_SIZE 16384
#endif
-/* header size of pipe content
+/* header size of pipe content
currently: char id, char subid, char[5] length */
#define PIPE_HEADER_SIZE 7
#define ERRNO_HRETRY (-53) /* Not time for any remote host */
#define ERRNO_LOCAL_ONLY (-54) /* Local-only delivery */
#define ERRNO_QUEUE_DOMAIN (-55) /* Domain in queue_domains */
+#define ERRNO_TRETRY (-56) /* Transport concurrency limit */
/* Special actions to take after failure or deferment. */