Hi there,
Is there any special way to 'clean up' after an Embedded server is
started? Because at the moment it simply doesn't work properly -- when
shutting down an instance of Embedded (.stop()) and starting a new
instance of Embedded (.start()) for a short period of time (one or two
seconds) the requests are served with the old mapper. This causes HTTP
400 (No Host matches server name...). In StandardEngineValve we have:
public final void invoke(Request request, Response response)
throws IOException, ServletException {
// Select the Host to be used for this Request
Host host = request.getHost();
if (host == null) {
response.sendError
(HttpServletResponse.SC_BAD_REQUEST,
sm.getString("standardEngine.noHost",
request.getServerName()));
host is null because in Mapper:
if (mappingData.host == null) {
Host[] hosts = this.hosts;
the hosts variable correctly indicates there is a 'localhost'
initialized and ready, but in a later check the list of contexts is
empty (!) and the method returns immediately without further
initializations.
I'm guessing the problem is in static collections somewhere (Registry?)
being shared by different engines and reusing the stopped instance's
list of contexts, but I just can't figure out how to cleanup properly on
shutdown. Is there any (undocumented :) requirement to spawn Engine
instances in separate class loaders? It seems perfectly justified and
reasonable to shutdown one embedded Engine and spawn another one bound
to the same host/port combination from within the same class loader, so
to me the current behavior appears to be a bug.
I realize the question goes quite deep in Tomcat internals, so if
developers mailing list is more adequate, let me know and I'll repost it
over there.
Thanks,
Dawid
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