When knowledge runs on Apache with SSL through Tomcat, it had happened error message that is "HTTP upgrade is not supported by the AJP protocol".

Thank you for your reading this topic. I have been using knowledge on Apache with SSL through Tomcat. When I selected “system setting” at “index rebuilding” or another some menus, it had occurred 500 error in “catalina.out”. It included a message which was “HTTP upgrade is not supported by the AJP protocol”. After error happened, I checked and set up Apache’s module which name is “mod_proxy_wstunnel”.

But I haven’t resolved this error…

Please anyone help me. Thank you.

My machine environment

OS: Amazon Linux(CentOS6)
Tomcat: Apache Tomcat/8.0.45
Apache: 2.4.27
Java: openjdk version "1.8.0_141"
knowledge: 1.10.0

/etc/httpd/conf.modules.d/00-proxy.conf

# This file configures all the proxy modules:
LoadModule proxy_module modules/mod_proxy.so
LoadModule lbmethod_bybusyness_module modules/mod_lbmethod_bybusyness.so
LoadModule lbmethod_byrequests_module modules/mod_lbmethod_byrequests.so
LoadModule lbmethod_bytraffic_module modules/mod_lbmethod_bytraffic.so
LoadModule lbmethod_heartbeat_module modules/mod_lbmethod_heartbeat.so
LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_connect_module modules/mod_proxy_connect.so
LoadModule proxy_express_module modules/mod_proxy_express.so
LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so
LoadModule proxy_fdpass_module modules/mod_proxy_fdpass.so
LoadModule proxy_ftp_module modules/mod_proxy_ftp.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadModule proxy_hcheck_module modules/mod_proxy_hcheck.so
LoadModule proxy_scgi_module modules/mod_proxy_scgi.so
LoadModule proxy_wstunnel_module modules/mod_proxy_wstunnel.so

/etc/httpd/conf.d/wstunnel.conf

ProxyPass /knowledge ajp://localhost:8009/knowledge

/etc/tomcat8/server.xml

<!-- A "Connector" represents an endpoint by which requests are received
        and responses are returned. Documentation at :
        Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
        Java AJP  Connector: /docs/config/ajp.html
        APR (HTTP/AJP) Connector: /docs/apr.html
        Define a non-SSL/TLS HTTP/1.1 Connector on port 8080
   -->
   <Connector port="8080" protocol="HTTP/1.1"
              connectionTimeout="20000"
              redirectPort="8443" />


<!-- Define an AJP 1.3 Connector on port 8009 -->
   <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />

Error message

INFO  2017-08-17 07:29:01,969 [LoggingFilter(100)] GET    https://example.co.jp/knowledge/admin.database/reindexing    200    IPADDRESS    17[ms]
INFO  2017-08-17 07:29:02,057 [LoggingFilter(100)] GET    https://example.co.jp/knowledge/open.account/icon/1    200    IPADDRESS    3[ms]
ERROR 2017-08-17 07:29:02,578 [ControlManagerFilter(206)] ERROR SEND
ERROR 2017-08-17 07:29:02,578 [LoggingFilter(64)] Any exception is thrown. [javax.servlet.ServletException]
javax.servlet.ServletException: javax.servlet.ServletException: java.lang.UnsupportedOperationException: HTTP upgrade is not supported by the AJP protocol
    at org.support.project.web.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:300)
    at org.support.project.knowledge.listener.CloseAbleAuthenticationFilter.doFilter(CloseAbleAuthenticationFilter.java:98)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.support.project.knowledge.filter.ApiFilter.doFilter(ApiFilter.java:71)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.support.project.web.filter.LoggingFilter.doFilter(LoggingFilter.java:62)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.support.project.web.filter.SeqFilter.doFilter(SeqFilter.java:31)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.support.project.web.filter.EncodingFilter.doFilter(EncodingFilter.java:36)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)
    at org.apache.coyote.ajp.AbstractAjpProcessor.process(AbstractAjpProcessor.java:877)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1533)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1489)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)
Caused by: javax.servlet.ServletException: java.lang.UnsupportedOperationException: HTTP upgrade is not supported by the AJP protocol
    at org.support.project.web.filter.ControlManagerFilter.doFilter(ControlManagerFilter.java:216)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.support.project.web.filter.MultipartFilter.doFilter(MultipartFilter.java:63)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.support.project.web.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:293)
    ... 30 more
Caused by: java.lang.UnsupportedOperationException: HTTP upgrade is not supported by the AJP protocol
    at org.apache.coyote.ajp.AbstractAjpProcessor.action(AbstractAjpProcessor.java:619)
    at org.apache.coyote.Request.action(Request.java:380)
    at org.apache.catalina.connector.Request.upgrade(Request.java:1932)
    at org.apache.catalina.connector.RequestFacade.upgrade(RequestFacade.java:1114)
    at javax.servlet.http.HttpServletRequestWrapper.upgrade(HttpServletRequestWrapper.java:376)
    at javax.servlet.http.HttpServletRequestWrapper.upgrade(HttpServletRequestWrapper.java:376)
    at org.apache.tomcat.websocket.server.UpgradeUtil.doUpgrade(UpgradeUtil.java:234)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:77)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
    at org.support.project.web.filter.ControlManagerFilter.doFilter(ControlManagerFilter.java:191)
    ... 36 more
INFO  2017-08-17 07:29:02,579 [LoggingFilter(100)] GET    https://example.co.jp/knowledge/reindexing    500    IPADDRESS    2[ms]

[Monota]

私も WebSocket の実装はしたことありませんが、ざっとソースコードを眺めた感じだと

ProxyPass /knowledge/exporting ws://localhost:8180/knowledge/exporting
ProxyPass /knowledge/data_transfer ws://localhost:8180/knowledge/data_transfer
ProxyPass /knowledge/notify ws://localhost:8180/knowledge/notify
ProxyPass /knowledge/reindexing ws://localhost:8180/knowledge/reindexing

を先頭に書くとどうでしょうか？

org.support.project.knowledge.websocket パッケージの実装を参照して書きました。

[MatsumotoHiroko]

@Monota 様、ありがとうございます。そちらの内容をproxyのconfに記載の上でtomcat + apache再起動したところ、今度はインデックス再構築でエラーがなく成功しました。（成功後メッセージポップアップは出てきませんがログ上では終わっていますので問題なさそうです） 実装確認をありがとうございます。

@koda-masaru 様、利用箇所のご説明ありがとうございます。デスクトップ通知でwebsocektが使われているのですね。あまり知見がないため非常に勉強になりました。

本当に感謝いたします。皆様がApacheを使っていないというのをお聞きし、HTTPサーバーの選択を誤りました。なんとか解決してよかったです。ありがとうございます 🙇‍♀️