Starts the embedded web server.
The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).
The callback for this method is defined as:
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'err' has 2 properties which hold detailed information:
Starts the embedded web server. This method can be used to manually start the embedded web server. Under normal circumstances this is not needed as the component will automatically start and stop the web server when GetAuthorization is called. However, you may decide to start the web server manually before calling GetAuthorization. When called this method will also populate ReturnURL with the address of the embedded server.