HTTP connection is getting closed after 5 mins

HTTP connection is getting closed after 5 mins with Linux + Wildfly 9.0.1 and throws broken pipe exception after the request is processed, It works fine in windows + Wildfly 9.0.1.

I tried to increase keepalive timeout using the following alternatives.

• Update values in httpd.conf from 300 seconds to 1500 seconds
• Add KeepAliveTimeout response header in standalone.xml
• Add header in response using “response.addHeader("Keep-Alive", "timeout=180000");”
• Updated jsp to add ("Keep-Alive", "timeout=180000" ) in response header.

None of the above alternatives worked.

Error message :
2015-10-23 18:46:47,250 ERROR [default task-29] [RequestServlet] Unknown exception detected: java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcherImpl.writev0(Native Method) [rt.jar:1.7.0_45]
at sun.nio.ch.SocketDispatcher.writev(SocketDispatcher.java:51) [rt.jar:1.7.0_45]
at sun.nio.ch.IOUtil.write(IOUtil.java:148) [rt.jar:1.7.0_45]
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:524) [rt.jar:1.7.0_45]