Initialization prepares an instance of the class to be used by your program, and is the first step that must be performed before you can use any other methods. Next, a connection is established with the server using the information provided by your program. For example, most of the connection methods require that you provide a host name, port number, a timeout period for synchronous operations and any additional options.
If the protocol requires that you authenticate the client in order to use the service, your application needs to provide this information. Once the client has been authenticated, it can then perform one or more operations, such as downloading a file, sending an email message and so on.
After you have finished, you disconnect from the remote host. Finally, before your program terminates, you uninitialize that instance of the class which causes it to perform any necessary housekeeping prior to releasing any system resources which were allocated on behalf of your program.