PreAuthentication with axis2

[Bartolomeo Nicolotti]

Hello,

we're using axis2 to generate a client to a webservice to which we've to
authenticate with user/pwd passing:

HttpTransportProperties.Authenticator
        auth = new HttpTransportProperties.Authenticator();
                         auth.setUsername(user);
                         auth.setPassword(pwd);
                         

options.setProperty(org.apache.axis2.transport.http.HTTPConstants.AUTHENTICATE,auth);

The problem is that the generated client sends 2 http requests before to
get authenticated.

The first HTTP request we get unauthotized, the second is the same
except for this http header

Authorization: Basic ......

Is there a way to send this HTTP header in the first http request?
Something like PreAuthentication?

Many thanks

Best reagards

Bartolomeo