<dependency>
<groupId>org.eclipse.jetty.websocket</groupId>
<artifactId>websocket-servlet</artifactId>
<version>9.4.6.v20170531</version>
</dependency>
libraryDependencies += "org.eclipse.jetty.websocket" % "websocket-servlet" % "9.4.6.v20170531"
@Grapes(
@Grab(group='org.eclipse.jetty.websocket', module='websocket-servlet', version='9.4.6.v20170531')
)
<dependency org="org.eclipse.jetty.websocket" name="websocket-servlet" rev="9.4.6.v20170531" />