Migrating from 3.3 to 3.4


  • the Session based versions of transform and transformOption were renamed into transformWithSession and transformOptionWithSession.
  • xpath check’s namespaces are now a Map[String, String] instead of a List[(String, String)]
  • Configuration option in gatling.config related to ssl, sockets, and netty were moved around in an effort to share amongst multiple protocol supports, eg MQTT (FrontLine).


  • hostNameAliases now takes a Map[String, List[String]] instead of a Map[String, String]
  • HttpHeaderNames and HttpHeaderValues are deprecated and planned for removal in the next release. Use io.netty.handler.codec.http.HttpHeaderNames and io.netty.handler.codec.http.HttpHeaderValues instead.

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