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The class names to filter can be detected by looking into META-INF/services/javax.servlet.ServletContainerInitializer files in Tomcat JARs. For WebSocket support the name is org.apache.tomcat.websocket.server.WsSci, for JSP support the name is org.apache.jasper.servlet.JasperInitializer.

TODO: Configuration example

e.g.:

<Context containerSciFilter="WsSci" />

The impact of disabling WebSocket support will depend on how many JARs were being scanned for WebSocket annotations and whether any other SCIs trigger annotation scans. Generally, it is the first SCI scan that has the biggest performance impact. The impact of additional scans is minimalTODO: How much faster does it make it? In short: Delays due to annotation scanning caused by WebSocket have been already mentioned in another paragraphs on this page. This is an alternative to removing websocket JARs from Tomcat installation.

References: Bug 55855, Tomcat 8 Context documentation

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