Default events

Server events

connection occurs when an connection has been successfully established
Takes 1 parameter ($socket)

Client events

banned occurs when the server issues a _Io_Ban on an ip or a socket. The banned event will occur upon reconnecting after a disconnect event.
Takes 5 parametsrs ($socket, $created_at, $expires_at, $sReason, $sIssuedBy)

Server and Client events

If server: disconnect occurs when a user disconnects. If client: disconnect occurs when the conection to the server is lost.
Takes 1 parameter ($socket)

flood occurs when exceeding the $__g_io_nMaxPacketSize. $__g_io_nMaxPacketSize is set by _Io_SetMaxRecvPackageSize which defaults to whatever _Io_setRecvPackageSize is set to.
Takes 1 parameter ($socket)