Apart from the configuration mentioned in Spectrum admin guide, you need to configure transporter receiver in axis2.xml to use SSL.
Follow the below steps:
- Browse to $SPECROOT/tomcat/webapps/axis2/WEB-INF/conf/
- Open axis2.xml in the TextEditor.
- change name="http" to name="https" and port to SSL port.
Sample looks like this :
- Try to add spectrum again. This should get added with SSL now