WCF: HTTP Basic Authentication without HTTPS when connecting to aSOAP service

[Tom]

Hi,

I need to connect to a SOAP web service (Java server) that requires
basic HTTP authentication over HTTP (not HTTPS). I've tried the
following setup:

<security mode="TransportCredentialOnly">
<transport clientCredentialType="Basic"
proxyCredentialType="Basic" />
</security>

and

factory.Credentials.UserName.UserName = "name";
factory.Credentials.UserName.Password = "password";

But the "Authorization" header is not sent by the client.

Is it really so that the header is not sent unless connecting through
a secure HTTPS connection? Or is the client always waiting for a 401
error to respond to (the server always responds with a SOAP message)?

Is there really no other way but to make my own message inspector to
send the header?

Br,
Tom