i cannot import soapui plugin in eclipse.
I have Eclipse Mars
Help/install new software/
then i added this line: http://www.soapui.org/eclipse/update
Eclipse says : Could not find http://www.soapui.org/eclipse/update
This link does not work
i need a valid url please
You already aware that update site is not working.
So provided an alternate way, you need to manually install the plugin. Check here how to install eclipse plugin manually.
Sorry if this does not work for you.