관련문서 : https://tomcat.apache.org/tomcat-8.5-doc/config/http2.html

확인버전 : 8.5.15

설정 :

    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443">
      <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" />
    </Connector>

로그 :

26-May-2017 04:59:37.248 INFO [main] org.apache.coyote.http11.AbstractHttp11Protocol.configureUpgradeProtocol The ["http-nio-8080"] connector has been configured to support HTTP upgrade to [h2c]