问题
I have a Java application running on Tomcat7, which uses the Atmosphere Framework. Atmosphere is a Websocket Framework. I used a sample application from the Atmosphere Sample Chat. My problem is that I did not get the connectors as well as the proper configuration for my Websocket Atmosphere application running.
The questions I have are:
- How do I have to configure my HAProxy?
- How do I have to configure my Tomcat server?
- How do I have to configure Tomcat for APR and for the NIO connector?
- Do I have to change something in my app (i.e., my web.xml)?
- How do I have to fix the errors below?
This is my HAProxy config:
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
The web.xml part for my Atmosphere Servlet:
<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>
What I changed in Tomcat server.xml
!--
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
-->
<Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol" redirectPort="8443"/>
These are the errors I get:
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.
and
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$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
and this one if I access my app with IE8 and IE9:
2013-08-08 00:56:19,631 [http-nio-8080-exec-9] ERROR cpr.AtmosphereFramework - AtmosphereFramework exception
java.lang.IllegalStateException: Not supported.
at org.atmosphere.cpr.AtmosphereRequest.startAsync(AtmosphereRequest.java:594)
at org.atmosphere.container.Servlet30CometSupport.suspend(Servlet30CometSupport.java:130)
at org.atmosphere.container.Servlet30CometSupport.service(Servlet30CometSupport.java:105)
at org.atmosphere.container.Tomcat7Servlet30SupportWithWebSocket.doService(Tomcat7Servlet30SupportWithWebSocket.java:65)
at org.atmosphere.container.TomcatWebSocketUtil.doService(TomcatWebSocketUtil.java:87)
at org.atmosphere.container.Tomcat7Servlet30SupportWithWebSocket.service(Tomcat7Servlet30SupportWithWebSocket.java:61)
at org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:1594)
at org.atmosphere.cpr.AtmosphereServlet.doPost(AtmosphereServlet.java:176)
at org.atmosphere.cpr.AtmosphereServlet.doGet(AtmosphereServlet.java:162)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$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)
回答1:
Okay here is what I would do. Install the APR Connector on your Tomcat server. This will speed up the production environment. Download APR and follow the install instructions to compile it on your os. You do not need the NIO Connector anymore.
Edit your server.xml:
<Connector port="8080"
protocol="org.apache.coyote.http11.Http11AprProtocol"
URIEncoding="UTF-8"
maxThreads="250"
redirectPort="8443" />
Do not use the org.atmosphere.interceptor.AtmosphereResourceLifecycleInterceptor this causes errors for me.
Your HAProxy config is fine. You should also use the atmosphere-runtime-native.jar instead of the atmosphere-runtime.jar.
Your errors might occur because you connect with a browser that does not support websockets to your application which uses websockets.
来源：https://stackoverflow.com/questions/17809880/how-do-i-configure-tomcat-and-haproxy-to-work-with-the-websocket-framework-atmos