When talking >=QUIC_VERSION_22, regularly send updated bandwidth

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 <limits>
 #include <map>
@@ skipping 98 matching lines @@
 
 // This is the default network timeout a for connection till the crypto
 // handshake succeeds and the negotiated timeout from the handshake is received.
 const int64 kDefaultInitialTimeoutSecs = 120;  // 2 mins.
 const int64 kDefaultTimeoutSecs = 60 * 10;  // 10 minutes.
 const int64 kDefaultMaxTimeForCryptoHandshakeSecs = 5;  // 5 secs.
 
 // Default ping timeout.
 const int64 kPingTimeoutSecs = 15;  // 15 secs.
 
+// Minimum number of RTTs between Server Config Updates (SCUP) sent to client.
+const int kMinIntervalBetweenServerConfigUpdatesRTTs = 10;
+
+// Minimum time between Server Config Updates (SCUP) sent to client.
+const int kMinIntervalBetweenServerConfigUpdatesMs = 1000;
+
 // We define an unsigned 16-bit floating point value, inspired by IEEE floats
 // (http://en.wikipedia.org/wiki/Half_precision_floating-point_format),
 // with 5-bit exponent (bias 1), 11-bit mantissa (effective 12 with hidden
 // bit) and denormals, but without signs, transfinites or fractions. Wire format
 // 16 bits (little-endian byte order) are split into exponent (high 5) and
 // mantissa (low 11) and decoded as:
 //   uint64 value;
 //   if (exponent == 0) value = mantissa;
 //   else value = (mantissa | 1 << 11) << (exponent - 1)
 const int kUFloat16ExponentBits = 5;
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   // Stores the sequence numbers of all transmissions of this packet.
   // Can never be null.
   SequenceNumberSet* all_transmissions;
   // In flight packets have not been abandoned or lost.
   bool in_flight;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_