LogLevel
Enumeration of log levels.
@ TRACE
Trace. (Internal operations to send and receive messages.).
@ WARN
Warnings. (Unexpected conditions which don't stop operations.).
@ INFO
Information. (Not used in this library.).
@ CRITICAL
Critical. (Unexpected conditions which can stop all operations in communication.).
@ ERROR
Error. (Unexpected conditions which stop some operations in communication.).
@ DEBUG
Debug. (Log of messages, initialization and finalization of clients and servers.).