问题
I'm, working on a Java servlet which runs on a Tomcat 8.0.18 server and uses the JSR356 websocket API to communicate with a browser. By default Tomcat uses the "permessage-deflate" compression to compress the websocket messages in both directions. I want to use no websocket compression, how can it be turned off? I have tried to use the compression="off" option in the file server.xml but that didn't change anything. How can i turn it off?
回答1:
Please try to add jvm option
-Dorg.apache.tomcat.websocket.DISABLE_BUILTIN_EXTENSIONS=true
to catalina.bat (for windows) or catalina.sh (for unix like OS).
e.g. add this line at the beginning of catalina.sh
CATALINA_OPTS="-Dorg.apache.tomcat.websocket.DISABLE_BUILTIN_EXTENSIONS=true"
add this line at the beginning of catalina.bat
set CATALINA_OPTS="-Dorg.apache.tomcat.websocket.DISABLE_BUILTIN_EXTENSIONS=true"
来源：https://stackoverflow.com/questions/28894316/tomcat-jsr356-websocket-disable-permessage-deflate-compression