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MySQL 8.4.2
Source Code Documentation
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MySQL 8.4.2
Source Code Documentation
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Initial handshake packet for protocol version 10.
| Type | Name | Description |
|---|---|---|
| int<1> | protocol version | Always 10 |
| string<NUL> | server version | human readable status information |
| int<4> | thread id | a.k.a. connection id |
| string[8] | auth-plugin-data-part-1 | first 8 bytes of the plugin provided data (scramble) |
| int<1> | filler | 0x00 byte, terminating the first part of a scramble |
| int<2> | capability_flags_1 | The lower 2 bytes of the Capabilities Flags |
| int<1> | character_set | default server a_protocol_character_set, only the lower 8-bits |
| int<2> | status_flags | SERVER_STATUS_flags_enum |
| int<2> | capability_flags_2 | The upper 2 bytes of the Capabilities Flags |
| if capabilities & CLIENT_PLUGIN_AUTH { | ||
| int<1> | auth_plugin_data_len | length of the combined auth_plugin_data (scramble), if auth_plugin_data_len is > 0 |
| } else { | ||
| int<1> | 00 | constant 0x00 |
| } | ||
| string[10] | reserved | reserved. All 0s. |
| $length | auth-plugin-data-part-2 | Rest of the plugin provided data (scramble), $len=MAX(13, length of auth-plugin-data - 8) |
| if capabilities & CLIENT_PLUGIN_AUTH { | ||
| NULL | auth_plugin_name | name of the auth_method that the auth_plugin_data belongs to |
| } | ||
If the client supports SSL (Capabilities Flags & CLIENT_SSL is on and the mysql_ssl_mode of the client is not SSL_MODE_DISABLED) a short package called Protocol::SSLRequest: is sent, causing the server to establish an SSL layer and wait for the next package from the client.
Client then returns Protocol::HandshakeResponse:
At any time, at any error, the client will just disconnect.
1.9.2