Hello,

Am planning to update the Tomcat configuration to support HTTP/2.

Wanted to understand the difference between

<UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol"/>  nested 
within the HTTP/1.1 connector

Vs

Supporting protocol=org.apache.coyote.http2.Http2Protocol in the connector 
configuration.

As I understand using the upgrade protocol mechanism allows to fallback on HTTP 
1.1 in case the client and server don't agree on HTTP2. Is this right 
understanding?

Were there any other design considerations to support HTTP/2 via upgrade 
protocol mechanisms? My apologies but I didn't find details around this.

Thanks,
Amit

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