0     "NONE",
 1     "SOCKET_NONE",
 2     "BANNER_NONE",
 3     "BANNER_SEND",
 4     "INVALID_MAC",
 5     "KEX_FAILURE",
 6     "ALLOC",
 7     "SOCKET_SEND",
 8     "KEY_EXCHANGE_FAILURE",
 9     "TIMEOUT",
10     "HOSTKEY_INIT",
11     "HOSTKEY_SIGN",
12     "DECRYPT",
13     "SOCKET_DISCONNECT",
14     "PROTO",
15     "PASSWORD_EXPIRED",
16     "FILE",
17     "METHOD_NONE",
18     "PUBLICKEY_UNRECOGNIZED",
19     "PUBLICKEY_UNVERIFIED",
20     "CHANNEL_OUTOFORDER",
21     "CHANNEL_FAILURE",
22     "CHANNEL_REQUEST_DENIED",
23     "CHANNEL_UNKNOWN",
24     "CHANNEL_WINDOW_EXCEEDED",
25     "CHANNEL_PACKET_EXCEEDED",
26     "CHANNEL_CLOSED",
27     "CHANNEL_EOF_SENT",
28     "SCP_PROTOCOL",
29     "ZLIB",
30     "SOCKET_TIMEOUT",
31     "SFTP_PROTOCOL",
32     "REQUEST_DENIED",
33     "METHOD_NOT_SUPPORTED",
34     "INVAL",
35     "INVALID_POLL_TYPE",
36     "PUBLICKEY_PROTOCOL",
37     "EAGAIN"