NewChecker creates MySQLChecker.

NewHealthCheckPacket creates MySQL packet for health checking with given username.

NewMySQLHeaderFromReader reads a MySQLHeader from reader.

Can do 4.1 authentication.

Speaks 4.1 protocol.

Character sets.

ComQUIT is a complete MySQL packet of COM_QUIT.

Checker does health checking with MySQL protocol.

HandshakeResponse is composed as follows: https://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::HandshakeResponse 4 capability flags, CLIENT_PROTOCOL_41 always set 4 max-packet size 1 character set string[23] reserved (all [0]) string[NUL] username if capabilities & CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA { lenenc-int length of auth-response string[n] auth-response } else if capabilities & CLIENT_SECURE_CONNECTION { 1 length of auth-response string[n] auth-response } else { string[NUL] auth-response } if capabilities & CLIENT_CONNECT_WITH_DB { string[NUL] database } if capabilities & CLIENT_PLUGIN_AUTH { string[NUL] auth plugin name } if capabilities & CLIENT_CONNECT_ATTRS { lenenc-int length of all key-values lenenc-str key lenenc-str value if-more data in 'length of all key-values', more keys and value pairs }.

Header maps the header of a MySQL packet.