The security state of the connection to the server. Permitted values are TCP/IP  (TCP/IP connection established without encryption), SSL/TLS  (TCP/IP connection established with encryption), Socket (Unix socket file connection), Named Pipe  (Windows named pipe connection), and Shared Memory (Windows shared memory connection). 

## • DB 

A string representing the default database name. 

Example: DB="test" 

## • HOST 

A string representing the client host name. 

Example: HOST="localhost" 

## • IP 

A string representing the client IP address. 

Example: IP="127.0.0.1" 

## • MYSQL_VERSION 

A string representing the MySQL server version. This is the same as the value of the VERSION() function or version  system variable. 

Example: MYSQL_VERSION="5.7.21-log" 

## • OS_LOGIN 

A string representing the external user name used during the authentication process, as set by the plugin used to authenticate the client. With native (built-in) MySQL authentication, or if the plugin does not set the value, this attribute is empty. The value is the same as that of the external_user  system variable (see Section 6.2.18, “Proxy Users” ). 

Example: OS_LOGIN="jeffrey" 

## • OS_VERSION 

A string representing the operating system on which the server was built or is running. 

Example: OS_VERSION="x86_64-Linux" 

## • PRIV_USER 

A string representing the user that the server authenticated the client as. This is the user name that the server uses for privilege checking, and it may differ from the USER  value. 

Example: PRIV_USER="jeffrey" 

## • PROXY_USER 

A string representing the proxy user (see Section 6.2.18, “Proxy Users” ). The value is empty if user proxying is not in effect. 

