pop3
event handlerspop3_request(c: connection, is_orig: bool, command: string, arg: string)
pop3_reply(c: connection, is_orig: bool, cmd: string, msg: string)
pop3_data(c: connection, is_orig: bool, data: string)
pop3_unexpected(c: connection, is_orig: bool, msg: string, detail: string)
pop3_login_success(c: connection, is_orig: bool, user: string, password: string)
pop3_login_failure(c: connection, is_orig: bool, user: string, password: string)