Websockets not working on ubuntu production server

[MohammadAdil]

I am using this war -
http://search.maven.org/remotecontent?filepath=org/atmosphere/samples/atmosphere-rest-chat/2.1.0/atmosphere-rest-chat-2.1.0.war

This works on local Tomcat server but fails to work on production server.
I have tomcat 7.0.42 on both development and production. the only difference is that development server uses port 8080 while production server uses port 80.

This is what i see when i try to connect.

On Chrome console

and on network tab of chrome console

I have this setting in server.xml (Production Server)

<Connector port="80" protocol="HTTP/1.1" connectionTimeout="20000" URIEncoding="UTF-8" redirectPort="8443" compression="on" compressionMinSize="2048" noCompressionUserAgents="gozilla, traviata" compressableMimeType="text/html,text/xml,application/javascript,text/css" />

and

<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />

OS Info

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=13.10
DISTRIB_CODENAME=saucy
DISTRIB_DESCRIPTION="Ubuntu 13.10"

Is their something on server that is blocking the request ?

Please note that this works if i set transport to long-polling.

Is their anything i missed to post here ?

[MohammadAdil]

I tried changing production server tomcat port to 8080 and websockets started working !

i.e

<Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" URIEncoding="UTF-8" redirectPort="8443" compression="on" compressionMinSize="2048" noCompressionUserAgents="gozilla, traviata" compressableMimeType="text/html,text/xml,application/javascript,text/css" />

Now, the question is, what is the issue in using port 80 ?

[jfarcand]

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