Landing Recent QUIC changes until 5/14/2016 02:25:25 UTC

net/quic/quic_protocol.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_QUIC_QUIC_PROTOCOL_H_
 #define NET_QUIC_QUIC_PROTOCOL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 60 matching lines @@
 // Minimum size of initial flow control window, for both stream and session.
 const uint32_t kMinimumFlowControlSendWindow = 16 * 1024;  // 16 KB
 
 // Maximum flow control receive window limits for connection and stream.
 const QuicByteCount kStreamReceiveWindowLimit = 16 * 1024 * 1024;   // 16 MB
 const QuicByteCount kSessionReceiveWindowLimit = 24 * 1024 * 1024;  // 24 MB
 
 // Minimum size of the CWND, in packets, when doing bandwidth resumption.
 const QuicPacketCount kMinCongestionWindowForBandwidthResumption = 10;
 
-// Maximum size of the CWND, in packets.
-const QuicPacketCount kMaxCongestionWindow = 200;
-
 // Maximum number of tracked packets.
 const QuicPacketCount kMaxTrackedPackets = 5000;
 
 // Default size of the socket receive buffer in bytes.
 const QuicByteCount kDefaultSocketReceiveBuffer = 256 * 1024;
 // Minimum size of the socket receive buffer in bytes.
 // Smaller values are ignored.
 const QuicByteCount kMinSocketReceiveBuffer = 16 * 1024;
 
 // Fraction of the receive buffer that can be used for encrypted bytes.
@@ skipping 431 matching lines @@
   // FEC data is malformed.
   QUIC_INVALID_FEC_DATA = 5,
   // STREAM frame data is malformed.
   QUIC_INVALID_STREAM_DATA = 46,
   // STREAM frame data overlaps with buffered data.
   QUIC_OVERLAPPING_STREAM_DATA = 87,
   // Received STREAM frame data is not encrypted.
   QUIC_UNENCRYPTED_STREAM_DATA = 61,
   // Attempt to send unencrypted STREAM frame.
   QUIC_ATTEMPT_TO_SEND_UNENCRYPTED_STREAM_DATA = 88,
+  // Received a frame which is likely the result of memory corruption.
+  QUIC_MAYBE_CORRUPTED_MEMORY = 89,
   // FEC frame data is not encrypted.
   QUIC_UNENCRYPTED_FEC_DATA = 77,
   // RST_STREAM frame data is malformed.
   QUIC_INVALID_RST_STREAM_DATA = 6,
   // CONNECTION_CLOSE frame data is malformed.
   QUIC_INVALID_CONNECTION_CLOSE_DATA = 7,
   // GOAWAY frame data is malformed.
   QUIC_INVALID_GOAWAY_DATA = 8,
   // WINDOW_UPDATE frame data is malformed.
   QUIC_INVALID_WINDOW_UPDATE_DATA = 57,
@@ skipping 146 matching lines @@
   QUIC_CONNECTION_MIGRATION_NO_MIGRATABLE_STREAMS = 81,
   // Connection changed networks too many times.
   QUIC_CONNECTION_MIGRATION_TOO_MANY_CHANGES = 82,
   // Connection migration was attempted, but there was no new network to
   // migrate to.
   QUIC_CONNECTION_MIGRATION_NO_NEW_NETWORK = 83,
   // Network changed, but connection had one or more non-migratable streams.
   QUIC_CONNECTION_MIGRATION_NON_MIGRATABLE_STREAM = 84,
 
   // No error. Used as bound while iterating.
-  QUIC_LAST_ERROR = 89,
+  QUIC_LAST_ERROR = 90,
 };
 
 // Must be updated any time a QuicErrorCode is deprecated.
 const int kDeprecatedQuicErrorCount = 4;
 const int kActiveQuicErrorCount = QUIC_LAST_ERROR - kDeprecatedQuicErrorCount;
 
 typedef char DiversificationNonce[32];
 
 struct NET_EXPORT_PRIVATE QuicPacketPublicHeader {
   QuicPacketPublicHeader();
@@ skipping 723 matching lines @@
   QuicFrames retransmittable_frames;
   EncryptionLevel encryption_level;
   QuicPacketNumberLength packet_number_length;
   QuicPacketLength bytes_sent;
   uint16_t nack_count;
   QuicTime sent_time;
   // Reason why this packet was transmitted.
   TransmissionType transmission_type;
   // In flight packets have not been abandoned or lost.
   bool in_flight;
-  // True if the packet can never be acked, so it can be removed.
+  // True if the packet can never be acked, so it can be removed.  Occurs when
+  // a packet is never sent, after it is acknowledged once, or if it's a crypto
+  // packet we never expect to receive an ack for.
   bool is_unackable;
   // True if the packet contains stream data from the crypto stream.
   bool has_crypto_handshake;
   // Non-zero if the packet needs padding if it's retransmitted.
   int num_padding_bytes;
   // Stores the packet number of the next retransmission of this packet.
   // Zero if the packet has not been retransmitted.
   QuicPacketNumber retransmission;
   // Non-empty if there is a listener for this packet.
   std::list<AckListenerWrapper> ack_listeners;
@@ skipping 35 matching lines @@
       : iov(iov), iov_count(iov_count), total_length(total_length) {}
 
   const struct iovec* iov;
   const int iov_count;
   const size_t total_length;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_