1.15.4 (April 15, 2021) ======================= Changes ------- * http: fixed a crash upon receiving empty HTTP/2 metadata frames. Received empty metadata frames are now counted in the HTTP/2 codec stat :ref:`metadata_empty_frames `. * http: fixed a remotely exploitable integer overflow via a very large grpc-timeout value causes undefined behavior. * http: fixed URL parsing for HTTP/1.1 fully qualified URLs and connect requests containing IPv6 addresses. * http: fixed bugs in datadog and squash filter's handling of responses with no bodies. * http: reverting a behavioral change where upstream connect timeouts were temporarily treated differently from other connection failures. The change back to the original behavior can be temporarily reverted by setting ``envoy.reloadable_features.treat_upstream_connect_timeout_as_connect_failure`` to false. * tls: fix detection of the upstream connection close event. Removed Config or Runtime ------------------------- *Normally occurs at the end of the* :ref:`deprecation period ` New Features ------------ Deprecated ----------