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我有一个在 Tomcat7 上运行的 Java 应用程序，它使用Atmosphere Framework。Atmosphere 是一个 Websocket 框架。我使用了Atmosphere Sample Chat中的示例应用程序。我的问题是我没有得到连接器以及运行 Websocket Atmosphere 应用程序的正确配置。

我的问题是：

  1. 我必须如何配置我的 HAProxy？
  2. 我必须如何配置我的 Tomcat 服务器？
  3. 如何为 APR 和 NIO 连接器配置 Tomcat？
  4. 我是否必须更改我的应用程序中的某些内容（即我的 web.xml）？
  5. 我该如何解决以下错误？

这是我的HAProxy配置：

defaults
mode http
log global
option httplog
option  http-server-close
option  dontlognull
option  redispatch
option  contstats
retries 3
backlog 10000
timeout client      25s
timeout connect     5s
timeout server      25s
# timeout tunnel available in ALOHA 5.5 or HAProxy 1.5-dev10 and higher
#   timeout tunnel  3600s
timeout http-keep-alive 1s
timeout http-request        15s
timeout queue        30s
timeout tarpit      60s
default-server inter 3s rise 2 fall 3
option forwardfor


frontend ft_web
  bind *:80 name http
  maxconn 60000

  acl host_testhostdev  hdr(host) -i www.testhost.com

  use_backend apache-8080 if host_testhostdev

  default_backend apache-8080


backend apache-8080
  balance roundrobin

  server websrv1 localhost:8080 maxconn 8000 weight 10 cookie websrv1 check

我的 Atmosphere Servlet的web.xml部分：

<async-supported>true</async-supported>
<init-param>
   <param-name>org.atmosphere.useNative</param-name>
   <param-value>true</param-value>
</init-param>   

<init-param>
<param-name>org.atmosphere.cpr.AtmosphereInterceptor</param-name>
    <param-value>org.atmosphere.interceptor.HeartbeatInterceptor,org.atmosphere.interceptor.AtmosphereResourceLifecycleInterceptor,org.atmosphere.client.TrackMessageSizeInterceptor</param-value>
</init-param>

<init-param>
   <param-name>org.atmosphere.cpr.broadcaster.shareableThreadPool</param-name>
   <param-value>true</param-value>
</init-param>

<init-param>
   <param-name>org.atmosphere.cpr.sessionSupport</param-name>
   <param-value>true</param-value>
</init-param>
<init-param>
   <param-name>org.atmosphere.cpr.broadcasterCacheClass</param-name>
   <param-value>org.atmosphere.cache.UUIDBroadcasterCache</param-value>
</init-param>

我在 Tomcat server.xml中所做的更改

!--
<Connector port="8080" protocol="HTTP/1.1"
           connectionTimeout="20000"
           redirectPort="8443" />
 -->

<Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol" redirectPort="8443"/>

这些是我得到的错误：

 ERROR cpr.AtmosphereFramework  - If you have more than one Connector enabled, make sure they both use the same protocol, e.g NIO/APR or HTTP for all. If not, org.atmosphere.container.BlockingIOCometSupport will be used and cannot be changed.

和

 2013-08-02 11:03:11,384 [http-nio-8080-exec-26] ERROR test.ReflectionService  - 
 Service method exception in publishDataCreatedCount in service  ClientNotificationUpdateService
 java.lang.NullPointerException
at org.atmosphere.cpr.AtmosphereRequest.setAttribute(AtmosphereRequest.java:569)
at org.atmosphere.cpr.DefaultBroadcaster.executeAsyncWrite(DefaultBroadcaster.java:922)
at org.atmosphere.util.SimpleBroadcaster.queueWriteIO(SimpleBroadcaster.java:192)
at org.atmosphere.cpr.DefaultBroadcaster.deliverPush(DefaultBroadcaster.java:768)
at org.atmosphere.cpr.DefaultBroadcaster.push(DefaultBroadcaster.java:666)
at org.atmosphere.util.SimpleBroadcaster.broadcast(SimpleBroadcaster.java:133)
at test.ClientUpdateService.sendToBoard(ClientUpdateService.groovy:46)
at test.ClientNotificationUpdateService.publishDataCreatedCount(ClientNotificationUpdateService.groovy:179)
at test.ReflectionService.callByConvention(ReflectionService.groovy:59)
at test.ClientUpdateService.methodMissing(ClientUpdateService.groovy:65)
at test.NotificationService.create(NotificationService.groovy:206)
at test.HomeController.addAction(HomeController.groovy:402)
at grails.plugin.cache.web.filter.PageFragmentCachingFilter.doFilter(PageFragmentCachingFilter.java:195)
at grails.plugin.cache.web.filter.AbstractFilter.doFilter(AbstractFilter.java:63)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)

如果我使用 IE8 和 IE9 访问我的应用程序，这个：

2013-08-08 00:56:19,631 [http-nio-8080-exec-9] ERROR cpr.AtmosphereFramework  - AtmosphereFramework exception
java.lang.IllegalStateException: Not supported.
    at org.atmosphere.cpr.AtmosphereRequest.startAsync(AtmosphereRequest.java:594)
    at org.atmosphere.container.Servlet30CometSupport.suspend(Servlet30CometSupport.java:130)
    at org.atmosphere.container.Servlet30CometSupport.service(Servlet30CometSupport.java:105)
    at org.atmosphere.container.Tomcat7Servlet30SupportWithWebSocket.doService(Tomcat7Servlet30SupportWithWebSocket.java:65)
    at org.atmosphere.container.TomcatWebSocketUtil.doService(TomcatWebSocketUtil.java:87)
    at org.atmosphere.container.Tomcat7Servlet30SupportWithWebSocket.service(Tomcat7Servlet30SupportWithWebSocket.java:61)
    at org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:1594)
    at org.atmosphere.cpr.AtmosphereServlet.doPost(AtmosphereServlet.java:176)
    at org.atmosphere.cpr.AtmosphereServlet.doGet(AtmosphereServlet.java:162)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:722)
2013-08-08 00:56:19,670 [http-nio-8080-exec-2] ERROR cpr.AtmosphereFramework  - AtmosphereFramework exception
java.lang.IllegalStateException: Not supported.
    at org.atmosphere.cpr.AtmosphereRequest.startAsync(AtmosphereRequest.java:594)
    at org.atmosphere.container.Servlet30CometSupport.suspend(Servlet30CometSupport.java:130)
    at org.atmosphere.container.Servlet30CometSupport.service(Servlet30CometSupport.java:105)
    at org.atmosphere.container.Tomcat7Servlet30SupportWithWebSocket.doService(Tomcat7Servlet30SupportWithWebSocket.java:65)
    at org.atmosphere.container.TomcatWebSocketUtil.doService(TomcatWebSocketUtil.java:87)
    at org.atmosphere.container.Tomcat7Servlet30SupportWithWebSocket.service(Tomcat7Servlet30SupportWithWebSocket.java:61)
    at org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:1594)
    at org.atmosphere.cpr.AtmosphereServlet.doPost(AtmosphereServlet.java:176)
    at org.atmosphere.cpr.AtmosphereServlet.doGet(AtmosphereServlet.java:162)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:722)
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1 回答 1

2

好的，这就是我要做的。在 Tomcat 服务器上安装 APR 连接器。这将加速生产环境。下载APR并按照安装说明在您的操作系统上编译它。您不再需要 NIO 连接器。

编辑您的 server.xml：

<Connector port="8080" 
            protocol="org.apache.coyote.http11.Http11AprProtocol" 
            URIEncoding="UTF-8" 
            maxThreads="250"
            redirectPort="8443" />

不要使用 org.atmosphere.interceptor.AtmosphereResourceLifecycleInterceptor 这会导致我出错。

您的 HAProxy 配置很好。您还应该使用大气运行时原生.jar 而不是大气运行时.jar。

您的错误可能是因为您使用不支持 websockets 的浏览器连接到使用 websockets 的应用程序。

于 2013-08-09T18:13:56.120 回答