Landing Recent QUIC changes until Jun 27 19:50:48 2017 +0000

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.
 
 // Time period for which a given connection_id should live in the time-wait
 // state.
 QUIC_FLAG(int64_t, FLAGS_quic_time_wait_list_seconds, 200)
 
 // Currently, this number is quite conservative.  The max QPS limit for an
 // individual server silo is currently set to 1000 qps, though the actual max
 // that we see in the wild is closer to 450 qps.  Regardless, this means that
 // the longest time-wait list we should see is 200 seconds * 1000 qps, 200000.
 // Of course, there are usually many queries per QUIC connection, so we allow a
 // factor of 3 leeway.
 //
 // Maximum number of connections on the time-wait list. A negative value implies
 // no configured limit.
 QUIC_FLAG(int64_t, FLAGS_quic_time_wait_list_max_connections, 600000)
 
 // Enables server-side support for QUIC stateless rejects.
 QUIC_FLAG(bool,
           FLAGS_quic_reloadable_flag_enable_quic_stateless_reject_support,
           true)
 
-// If true, multipath is enabled for the connection.
-QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_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_reloadable_flag_quic_require_handshake_confirmation,
           false)
 
 // If true, disable pacing in QUIC.
 QUIC_FLAG(bool, FLAGS_quic_disable_pacing_for_perf_tests, false)
 
@@ skipping 36 matching lines @@
 // public flag.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_remove_v33_hacks2, false)
 
 // Enable QUIC force HOL blocking experiment.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_force_hol_blocking, true)
 
 // If true, allows packets to be buffered in anticipation of a future CHLO, and
 // allow CHLO packets to be buffered until next iteration of the event loop.
 QUIC_FLAG(bool, FLAGS_quic_allow_chlo_buffering, true)
 
-// If true, fix some casts that were causing off-by-one errors in QUIC's cubic
-// "convex" increases.
-QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_fix_cubic_convex_mode, true)
-
 // If true, GFE sends SETTINGS_MAX_HEADER_LIST_SIZE to the client at the
 // beginning of a connection.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_send_max_header_list_size, true)
 
-// If true, fix quantization of CubicBytes while performing convex increases.
-QUIC_FLAG(bool,
-          FLAGS_quic_reloadable_flag_quic_fix_cubic_bytes_quantization,
-          true)
-
-// If true, fix Cubic\'s use of kBetaLastMax for n-connection emulation.
-QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_fix_beta_last_max, true)
-
 // If greater than zero, mean RTT variation is multiplied by the specified
 // factor and added to the congestion window limit.
 QUIC_FLAG(double, FLAGS_quic_bbr_rtt_variation_weight, 0.0f)
 
 // Congestion window gain for QUIC BBR during PROBE_BW phase.
 QUIC_FLAG(double, FLAGS_quic_bbr_cwnd_gain, 2.0f)
 
 // If true, do not send or process stop waiting frames in QUIC if the NSTP
 // connection option is provided.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_no_stop_waiting_frames, false)
 
 // Allows one self address change.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_allow_one_address_change, false)
 
 // If true, QUIC BBR stores a max filtered number of bytes delivered at a rate
 // faster than the sending rate.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_ack_aggregation_bytes, true)
 
-// If true, allow cubic updates on every ack, rather than occasionally limiting
-// the frequency to once every 30ms.
-QUIC_FLAG(bool,
-          FLAGS_quic_reloadable_flag_quic_enable_cubic_per_ack_updates,
-          true)
-
 // Support bandwidth resumption in QUIC BBR.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_bandwidth_resumption, false)
 
 // Add the equivalent number of bytes as 3 TCP TSO segments to QUIC's BBR CWND.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_add_tso_cwnd, false)
 
 // If true, enable version 38 which supports new PADDING frame and respects NSTP
 // connection option.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_version_38, true)
 
@@ skipping 26 matching lines @@
 // If enabled, use refactored stream creation methods.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_refactor_stream_creation, false)
 
 // A second take on fixing QUIC BBR packet conservation.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_fix_conservation2, true)
 
 // If true, GFEs generate and validate source address token using the actual
 // client IP for proxied session.
 QUIC_FLAG(bool,
           FLAGS_quic_reloadable_flag_quic_use_client_address_for_stk_in_proxy,
-          false)
+          true)
 
 // If true, export a varz mapping QUIC non 0-rtt handshake with corresponding
 // frontend service.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_account_handshake, false)
 
 // Allows the 3RTO QUIC connection option to close a QUIC connection after
 // 3RTOs if there are no open streams.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_3rtos, false)
 
 // If true, enable experiment for testing PCC congestion-control.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_pcc, false)
 
 // If true, enable QUIC v40.
 QUIC_FLAG(bool, FLAGS_quic_enable_version_40, false)
 
 // If true, use the more CPU efficient bandwidth sampler datastructure.
-QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_faster_bandwidth_sampler, false)
+QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_faster_bandwidth_sampler, true)
 
 // In QUIC, QuicSession gets notified when stream frames are acked, discarded or
 // retransmitted.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_use_stream_notifier2, false)
 
 // When true, defaults to BBR congestion control instead of Cubic.
 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_default_to_bbr, false)
+
+// Allow a new rate based recovery in QUIC BBR to be enabled via connection
+// option.
+QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_rate_recovery, false)
+
+// If true, allow trailing headers with duplicate keys, and combine the values
+// from duplicate keys into a single delimted header.
+QUIC_FLAG(bool,
+          FLAGS_quic_reloadable_flag_quic_handle_duplicate_trailers,
+          false)
+
+// Allows QUIC BBR up to twice the previously measured ack aggregation to be
+// added to the CWND as long as bytes_in_flight goes below the target recently.
+QUIC_FLAG(bool,
+          FLAGS_quic_reloadable_flag_quic_bbr_ack_aggregation_bytes2,
+          false)