Landing Recent QUIC changes until Sat Sep 10 00:32:41

net/quic/core/quic_flags_list.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file intentionally does not have header guards, it's included
 // inside a macro to generate values.
 
 // This file contains the list of QUIC protocol flags.
 
 // If true, QUIC BBR congestion control may be enabled via Finch and/or via QUIC
@@ skipping 22 matching lines @@
 QUIC_FLAG(bool, FLAGS_quic_always_log_bugs_for_tests, true)
 
 // If true, multipath is enabled for the connection.
 QUIC_FLAG(bool, FLAGS_quic_enable_multipath, false)
 
 // If true, require handshake confirmation for QUIC connections, functionally
 // disabling 0-rtt handshakes.
 // TODO(rtenneti): Enable this flag after CryptoServerTest's are fixed.
 QUIC_FLAG(bool, FLAGS_quic_require_handshake_confirmation, false)
 
-// If true, QUIC will measure head of line (HOL) blocking due between
-// streams due to packet losses on the headers stream.  The
-// measurements will be surfaced via UMA histogram
-// Net.QuicSession.HeadersHOLBlockedTime.
-QUIC_FLAG(bool, FLAGS_quic_measure_headers_hol_blocking_time, true)
-
 // If true, disable pacing in QUIC.
 QUIC_FLAG(bool, FLAGS_quic_disable_pacing_for_perf_tests, false)
 
 // If true, QUIC connections can do bandwidth resumption with an initial window
 // of < 10 packets.
 QUIC_FLAG(bool, FLAGS_quic_no_lower_bw_resumption_limit, true)
 
 // If true, QUIC public reset packets will have the \"pre-v33\" public header
 // flags.
 QUIC_FLAG(bool, FLAGS_quic_use_old_public_reset_packets, true)
 
 // If true, QUIC will use cheap stateless rejects without creating a full
 // connection.
 QUIC_FLAG(bool, FLAGS_quic_use_cheap_stateless_rejects, false)
 
 // If true, QUIC respect HTTP2 SETTINGS frame rather than always close the
 // connection.
 QUIC_FLAG(bool, FLAGS_quic_respect_http2_settings_frame, true)
 
 // If true, enables QUIC_VERSION_35.
 QUIC_FLAG(bool, FLAGS_quic_enable_version_35, true)
 
 // If true, re-enables QUIC_VERSION_36.
-QUIC_FLAG(bool, FLAGS_quic_enable_version_36, true)
-
-// If true, enables QUIC_VERSION_36.
 QUIC_FLAG(bool, FLAGS_quic_enable_version_36_v2, true)
 
 // If true, use async codepaths to invoke ProofSource::GetProof.
 QUIC_FLAG(bool, FLAGS_enable_async_get_proof, false)
 
-// If true, QuicAlarm::Update will call a faster UpdateImpl implementation
-// instead of canceling and reregistering the alarm.
-QUIC_FLAG(bool, FLAGS_quic_change_alarms_efficiently, true)
-
 // If true, requires handshake confirmations for all QUIC handshakes with
 // versions less than 33.
 QUIC_FLAG(bool, FLAGS_quic_require_handshake_confirmation_pre33, false)
 
-// If true, fix a bug with which QuicStreamSequencerBuffer can\'t release block
-// memory in time.
-QUIC_FLAG(bool, FLAGS_quic_sequencer_buffer_retire_block_in_time, true)
-
-// Remove obsolete code to force QUIC to go forward secure, now that the server
-// immediately goes forward secure.
-QUIC_FLAG(bool, FLAGS_quic_remove_obsolete_forward_secure, true)
-
 // If true, close QUIC connection explicitly on write error due to packet being
 // too large.
 QUIC_FLAG(bool, FLAGS_quic_close_connection_on_packet_too_large, true)
 
-// If true, close the write side of a QUIC spdy stream when all queued bytes
-// have been written and a FIN has been sent.
-QUIC_FLAG(bool, FLAGS_quic_close_stream_after_writing_queued_data, true)
-
-// If true, close connection with QUIC_TOO_MANY_FRAME_GAPS error when number of
-// gaps in QuicStreamSequenceBuffer exceeds allowed limit.
-QUIC_FLAG(bool, FLAGS_quic_limit_frame_gaps_in_buffer, true)
-
 // If true, v33 QUIC client uses 1 bit to specify 8-byte connection id in public
 // flag.
 QUIC_FLAG(bool, FLAGS_quic_remove_v33_hacks, true)
 
 // If true, use the CHLO packet size, not message size when determining how
 // large a REJ can be.
 QUIC_FLAG(bool, FLAGS_quic_use_chlo_packet_size, true)
 
 // If true, defer creation of new connection till its CHLO arrives.
 QUIC_FLAG(bool, FLAGS_quic_buffer_packet_till_chlo, true)
 
-// If true, the connection will check whether it is application-limited, and
-// notify the congestion controller about it.
-QUIC_FLAG(bool, FLAGS_quic_enable_app_limited_check, true)
-
 // Deprecate QuicPacketCreator::next_packet_number_length_ because it's no
 // longer necessary.
 QUIC_FLAG(bool, FLAGS_quic_simple_packet_number_length_2, true)
 
 // If true, disables QUIC version less than 32.
 QUIC_FLAG(bool, FLAGS_quic_disable_pre_32, true)
 
 // If true, QUIC will enforce the MTU limit for connections that may require a
 // small MTU.
 QUIC_FLAG(bool, FLAGS_quic_enforce_mtu_limit, false)
@@ skipping 26 matching lines @@
 // If true, lazy allocate and early release memeory used in
 // QuicStreamSequencerBuffer to buffer incoming data.
 QUIC_FLAG(bool, FLAGS_quic_reduce_sequencer_buffer_memory_life_time, true)
 
 // If true, allow server address change if it is because of mapped ipv4 address.
 QUIC_FLAG(bool, FLAGS_quic_allow_server_address_change_for_mapped_ipv4, true)
 
 // If true, disables QUIC version less than 34.
 QUIC_FLAG(bool, FLAGS_quic_disable_pre_34, false)
 
+// When true, decode the packet number from the largest received packet, rather
+// than the most recent.
+QUIC_FLAG(bool, FLAGS_quic_packet_numbers_largest_received, true)