With Tomcat 8.5.31, I cant enable gzip compression with HTTP2 protocol. If someone has successfully enabled compression on Tomcat 8.5 with HTTP2 protocol, please help me with correct configuration.
Things tried: - tried with and without useSendfile="false" attribute under UpgradeProtocol. - turned off "useSendfile" by adding "sendfileSize=-1" init-param for default servlet under conf/web.xml - tried APR (with OpenSSL) connector too instead of NIO - compression is not working with Chrome and Firefox (latest ver.) - testing with default ROOT webapp to avoid any other conflicting setting - gzip compression works with same setting on Tomcat 9.0.5 - using openjdk 10.0.1 (and tried with Oracle Java 1.8.0_144) Using the following connector: <Connector protocol="org.apache.coyote.http11.Http11NioProtocol" port="8443" URIEncoding="UTF-8" maxPostSize="40960000" maxHttpHeaderSize="1024000" maxThreads="2500" enableLookups="false" SSLEnabled="true" scheme="https" secure="true" compression="on" noCompressionUserAgents="gozilla,traviata" compressableMimeType= "text/html,text/json,application/json,text/xml,text/plain,application/javascript,text/css,text/javascript,text/js" useSendfile="false" compressionMinSize="500"> <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" compression="on" compressionMinSize="500" keepAliveTimeout="60000" maxConcurrentStreamExecution="200" maxConcurrentStreams="200" maxHeaderSize="1024000" noCompressionUserAgents="gozilla,traviata" useSendfile="false" /> <SSLHostConfig certificateVerification="none" honorCipherOrder="true" protocols="TLSv1.1,TLSv1.2" ciphers= "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA" > <Certificate certificateKeystoreFile="conf/KeystoreFile.jks" certificateKeystorePassword="xxxxxx" certificateKeystoreType="JKS" /> </SSLHostConfig> </Connector> Request headers (from Chrome): :authority: localhost:8443 :method: GET :path: /tomcat.css :scheme: https accept: text/css,*/*;q=0.1 accept-encoding: gzip, deflate, br accept-language: en-US,en;q=0.9 cache-control: no-cache pragma: no-cache referer: https://localhost:8443/ user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36 Response headers (from Chrome): accept-ranges: bytes content-type: text/css date: Wed, 25 Jul 2018 21:48:16 GMT etag: W/"5931-1524878698000" last-modified: Sat, 28 Apr 2018 01:24:58 GMT status: 200 Thanks in advance.
