请问一下有没有C++ API的IO错误代码手册

Question

我在用DolphinDB C++ API时运行conn.run时出现了如下图所示的错误：Failed to read message from the sokcket with IO error type 13。请问这type 13表示什么意思？

Answer 1

各类型描述如下：

1  Socket is disconnected/closed or file is closed.
2  In non-blocking socket mode, there is no data ready for retrieval yet.
3  Out of memory, no disk space, or no buffer for sending data in non-blocking socket mode.
4  String size exceeds 64K or code size exceeds 1 MB during serialization over network.
5  In non-blocking socket mode, a program is in pending connection mode.
6  Invalid message format.
7  Reach the end of a file or a buffer.
8  File is readable but not writable.
9  File is writable but not readable.
10 A file doesn't exist or the socket destination is not reachable.
11 The database file is corrupted.
12 Not the leader node of the RAFT protocol.
13 Unknown IO error.