COM_CHANGE_USER
COM_CHANGE_USER resets the connection and re-authenticates with the given credentials. The packet is identical to the authentication packet in the connection handshake.
Fields
- int<1> 0x11 : COM_CHANGE_USER header
- string<NUL> username
- if (server_capabilities & CLIENT_SECURE_CONNECTION)
- int<1> length of authentication response
- string authentication response
- else
- string<NUL> authentication response
- string<NUL> default schema name
- int<2> client character collation
- if (server_capabilities & CLIENT_PLUGIN_AUTH)
- string<NUL> authentication plugin name
- if (server_capabilities & CLIENT_CONNECT_ATTRS)
- int<lenenc> size of connection attributes
- loop:
- string<lenenc> key
- string<lenenc> value
Response
Server response is like connection authentication :
- An OK packet in case of success OK_Packet.
- An error packet in case of error ERR_Packet.
- Authentication switch
- If the client or server doesn't have PLUGIN_AUTH capability:
- Server sends 0xFE byte .
- Client sends old_password.
- else
- Server sends Authentication switch request.
- Client may have many exchanges with the server according to the Plugin.
- Authentication switch ends with server sending either OK_Packet or ERR_Packet.
- If the client or server doesn't have PLUGIN_AUTH capability:
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