List Available Extensions

You can list available extensions through the /v2.0/extensions URI.

	Note
	You must authenticate these requests just like any other API request.

The following example response shows a list of extensions:

Status Code: 200 OK
        Connection: keep-alive
        Content-Length: 654
        Content-Type: application/xml; charset=UTF-8
        Date: Wed, 12 Sep 2012 11:32:56 GMT

<?xml version="1.0" encoding="UTF-8"?>
<extensions>
    <extension>
        <updated>2012-07-20T10:00:00-00:00</updated>
        <name>Neutron L3 Router</name>
        <links/>
        <namespace>http://docs.openstack.org/ext/neutron/router/api/v1.0</namespace>
        <alias>router</alias>
        <description>Router abstraction for basic L3 forwarding between L2 Neutron networks and access to external networks via a NAT gateway.</description>
    </extension>
    <extension>
        <updated>2012-09-07T10:00:00-00:00</updated>
        <name>Provider Network</name>
        <links/>
        <namespace>http://docs.openstack.org/ext/provider/api/v1.0</namespace>
        <alias>provider</alias>
        <description>Expose mapping of virtual networks to physical networks</description>
    </extension>
</extensions>

Also, you can query for specific extension using the extension alias. For instance, querying /v2.0/extensions/router, results in the following response:

Status Code: 200 OK
Connection: keep-alive
Content-Length: 350
Content-Type: application/xml; charset=UTF-8
Date: Wed, 12 Sep 2012 11:36:20 GMT

<?xml version="1.0" encoding="UTF-8"?>
<extension>
    <updated>2012-07-20T10:00:00-00:00</updated>
    <name>Neutron L3 Router</name>
    <links/>
    <namespace>http://docs.openstack.org/ext/neutron/router/api/v1.0</namespace>
    <alias>router</alias>
    <description>Router abstraction for basic L3 forwarding between L2 Neutron networks and access to external networks via a NAT gateway.</description>
</extension>