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release: bump to 1.11.1. (#21)
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
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VERSION

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1.11.0
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1.11.1

docs/root/intro/version_history.rst

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Version history
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1.11.1 (Pending)
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1.11.1 (August 13, 2019)
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* http: added mitigation of client initiated attacks that result in flooding of the downstream HTTP/2 connections. Those attacks can be logged at the "warning" level when the runtime feature `http.connection_manager.log_flood_exception` is enabled. The runtime setting defaults to disabled to avoid log spam when under attack.
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* http: added :ref:`inbound_empty_frames_flood <config_http_conn_man_stats_per_codec>` counter stat to the HTTP/2 codec stats, for tracking number of connections terminated for exceeding the limit on consecutive inbound frames with an empty payload and no end stream flag. The limit is configured by setting the :ref:`max_consecutive_inbound_frames_with_empty_payload config setting <envoy_api_field_core.Http2ProtocolOptions.max_consecutive_inbound_frames_with_empty_payload>`.
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Runtime feature `envoy.reloadable_features.http2_protocol_options.max_consecutive_inbound_frames_with_empty_payload` overrides :ref:`max_consecutive_inbound_frames_with_empty_payload setting <envoy_api_field_core.Http2ProtocolOptions.max_consecutive_inbound_frames_with_empty_payload>`. Large override value (i.e. 2147483647) effectively disables mitigation of inbound frames with empty payload.

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