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https://dev.mysql.com/doc/internals/en/com-process-kill.html
COM_PROCESS_KILL: ask the server to terminate a connection Returns OK_Packet or ERR_Packet Payload 1 [0c] COM_PROCCESS_KILL 4 connection id . Note As of MySQL 5.7.11, COM_PROCESS_KILL is deprecated and will be removed in a future version of MySQL.
https://dev.mysql.com/doc/internals/en/com-quit.html
COM_QUIT: tells the server that the client wants to close the connection response: either a connection close or a OK_Packet Payload 1 [01] COM_QUIT Fields command (1) -- 0x01 COM_QUIT Example 01 00 00 00 01 .
https://dev.mysql.com/doc/internals/en/com-set-option.html
Enables capabilities for the current connection to be enabled and disabled: CLIENT_MULTI_STATEMENTS The option operation is one of: Operation Constant Name 0 MYSQL_OPTION_MULTI_STATEMENTS_ON 1 MYSQL_OPTION_MULTI_STATEMENTS_OFF On success it returns ...
https://dev.mysql.com/doc/internals/en/dbug-sleep.html
In cases where the normal server code does not have a block point at the critical place, one can insert an artificial synchronization point. open_tables(...) DBUG_EXECUTE_IF("sleep_open_and_lock_after_open", { const char *old_proc_info= ...
https://dev.mysql.com/doc/internals/en/error-flags.html
thd->killed Set in case of error in connection protocol or in case of 'kill'. In this case we should abort the query and kill the connection. The following flags can be examined or set to alter the behavior during error handling: ...
https://dev.mysql.com/doc/internals/en/event-data-for-specific-event-types.html
For transactional tables, there should be no event with a nonzero error code (though it can happen, for example if the connection was interrupted (Control-C)). Value is three 2-byte unsigned integers representing the character_set_client, ... The ...
https://dev.mysql.com/doc/internals/en/initial-handshake.html
After this, optionally, client can request an SSL connection to be established with SSL Connection Request Packet, and then client sends the Handshake Response Packet. Initial Handshake starts with server sending the Initial Handshake Packet.
https://dev.mysql.com/doc/internals/en/ssl-directory.html
Secure Sockets Layer; includes an example certification one can use test an SSL (secure) database connection. Finally, there are two short scripts for running clients and servers over SSL connections. It contains a short note from Tonu Samuel (the ...
https://dev.mysql.com/doc/internals/en/ssl-handshake.html
server sending Initial Handshake Packet client replying with SSL Connection Request Packet the ususal SSL exchange leading to establishing SSL connection client sends Handshake Response Packet Image description .
https://dev.mysql.com/doc/internals/en/transactions-life-cycle.html
When a new connection is established, thd->transaction members are initialized to an empty state. When a connection is closed, the current normal transaction, if any, is rolled back. If a statement uses any tables, all affected engines are ...