Thank you Mark.

h2c is enabled : 30-Mar-2017 21:30:33.373 INFOS [main]
org.apache.coyote.http11.AbstractHttp11Protocol.configureUpgradeProtocol
The ["http-nio-8080"] connector has been configured to support HTTP upgrade
to [h2c]

However org.apache.catalina.connector.Request#newPushBuilder returns null.
Processor is a Http11Processor and it does not override the return false
of org.apache.coyote.AbstractProcessor#isPushSupported. It's as if the
upgrade did not plug in.

Using the apr+ssl connector, same client works fine (i.e pushBuilder is not
null).

Client is Chrome 56. Where could I check in tomcat source to see if the
client is sending the h2c upgrade token ?

laurent



On Thu, Mar 30, 2017 at 9:07 PM, Mark Thomas <ma...@apache.org> wrote:
>
> On 30/03/17 18:02, Laurent Perez wrote:
> > Hi
> >
> > I managed to run the servlets/serverpush/simpleimage HTTP/2 push example
> > from Tomcat 9 trunk with the SSL Http11AprProtocol connnector and
> > <UpgradeProtocol
> > className="org.apache.coyote.http2.Http2Protocol"/>.
> >
> > Now I would like to enable HTTP/2 but without SSL : my certificates are
> > either hosted under my load balancer or Apache itself, and I do not
require
> > SSL between mod_proxy and Tomcat.
> >
> > But org.apache.coyote.AbstractProcessor#isPushSupported then returns
false,
> > as if the UpgradeProtocol did not fire.
> >
> > Is it possible to enable HTTP/2 with no SSL connector ?
>
> Yes. You need to add the <UpgradeProtocol ... /> block to an HTTP
> connector. You should see in the start-up log that h2c is enabled via
> HTTP Upgrade.
>
> Mark
>
>
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