MySQL 9.1.0
Source Code Documentation
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We need to make sure that when sending plugin supplied data to the client they are not considered a special out-of-band command, like e.g.
ERR_Packet, Protocol::AuthSwitchRequest: or OK_Packet. To avoid this the server will send all plugin data packets "wrapped" in a command \1. Note that the client will continue sending its replies unrwapped: Protocol::AuthSwitchResponse:
Type | Name | Description |
---|---|---|
int<1> | 0x01 | status tag |
string<EOF> | authentication method data | Extra authentication data beyond the initial challenge |