14.2.1.3 Capability Negotiation

To permit an old client to connect to newer servers, the initial handshake contains

• the MySQL Server version

• the server's capabilities

The client should only announce the capabilities in the Handshake Response Packet that it has in common with the server.

They can agree on:

• use of status flags

• use of SQL states for error-codes

• authentication methods

• SSL support

• Compression