ZCML File
configure.zcml

<configure
    xmlns="http://namespaces.zope.org/zope"
    xmlns:zcml="http://namespaces.zope.org/zcml"
    zcml:condition="have twisted"
    >
<utility
    component=".servercontrol.serverControl"
    provides="zope.app.applicationcontrol.interfaces.IServerControl"
    />
<utility
    component=".http.http"
    provides=".interfaces.IServerType"
    name="HTTP"
    />
<utility
    component=".http.https"
    provides=".interfaces.IServerType"
    name="HTTPS"
    />
<utility
    component=".http.pmhttp"
    provides=".interfaces.IServerType"
    name="PostmortemDebuggingHTTP"
    />
<include
    package=".ftp"
    />
</configure>