QUIC server max streams is now at least 10 streams larger than

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 <list>
@@ skipping 106 matching lines @@
 
 // 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;
 
-// Multiplier that allows server to accept slightly more streams than
-// negotiated in handshake.
+// The number of open streams that a server will accept is set to be slightly
+// larger than the negotiated limit. Immediately closing the connection if the
+// client opens slightly too many streams is not ideal: the client may have sent
+// a FIN that was lost, and simultaneously opened a new stream. The number of
+// streams a server accepts is a fixed increment over the negotiated limit, or a
+// percentage increase, whichever is larger.
 const float kMaxStreamsMultiplier = 1.1f;
+const int kMaxStreamsMinimumIncrement = 10;
 
 // 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)
@@ skipping 939 matching lines @@
   SequenceNumberList* all_transmissions;
   // 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.
   bool is_unackable;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_