Hi,

do you talk http: or https: to the backend? h2://mybackend is for the SSL case, 
for unencrypted calls, use h2c://mybackend.

Maybe that is the problem?

-Stefan

> Am 17.06.2017 um 15:26 schrieb Olivier Mallassi <olivier.malla...@gmail.com>:
> 
> Hello all
> 
> We are trying to use the mod_proxy_http2 of httpd. Our use case is for now 
> "simple"
> - multiple backedns (configured in HTTP2)
> - one httpd acting as proxy 
> -- mod_proxy_http2 is activated
> -- we use the Balancer directive to load balanced accross backends 
> (round-robin)
> - the client is a curl -kv --http2 ...
> 
> The tests are the following:
> - while using curl to access one of the backend directly, the access log 
> shows that we use HTTP/2
> - then the balancer directive is configured with http://mybackend1
> In taht case, while accessing to the proxy with curl, we see that the 
> communication between curl & httpd is HTTP/2 but that the communication with 
> the backends is HTTP1/1
> - then we change the balancer directive to h2://mybackend.... 
> In that case, the curl returns 503 (like if the proxy is unable to route). 
> 
> I suspect a misconfiguration but any help is welcomed. Does someone already 
> did something similar? 
> 
> thanks. 


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