Append Usrname Password in Adapter Engine URL

Dear All

We have to share the WSDL with an external system to connect with PI

We are using Adapter Engine url with following format

• http:// <host name> : <port name> /XISOAPAdapter/MessageServlet?channel= <party name> : <service name> : <channel name>

Can some one suggest how to append the username password in it

Sourabh