fixes for Response.writeError with servlet error dispatch #12698
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Signed-off-by: Lachlan Roberts <lachlan.p.roberts@gmail.com>
Signed-off-by: Lachlan Roberts <lachlan.p.roberts@gmail.com>
Signed-off-by: Lachlan Roberts <lachlan.p.roberts@gmail.com>
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See issue #12697
Doing a
Response.writeError()will try to invoke the servlet ErrorHandler, which can do an ERROR dispatch. This does not work properly if it is not done from within the scope of theServletChannel.ErrorHandlerimplementations to stop dispatching to error pages unless we have already started theServletChannel.Authenticators now use theServletChannelmechanism to do asendError()when theServletChannelstarts handling the request. It uses a new static methodErrorHandler.writeErrorwhich is overriden by the servletErrorHandlers.