EventListener (Component\HttpKernel)

Symfony\Component\HttpKernel\EventListener

ErrorsLoggerListener	Injects the logger into the ErrorHandler, so that it can log various errors.
EsiListener	EsiListener adds a Surrogate-Control HTTP header when the Response needs to be parsed for ESI.
ExceptionListener	ExceptionListener.
FragmentListener	Handles content fragments represented by special URIs.
LocaleListener	Initializes the locale based on the current request.
ProfilerListener	ProfilerListener collects data for the current request by listening to the onKernelResponse event.
ResponseListener	ResponseListener fixes the Response headers based on the Request.
RouterListener	Initializes the context from the request and sets request attributes based on a matching route.
StreamedResponseListener	StreamedResponseListener is responsible for sending the Response to the client.