Close the connection after 3RTOs if there are no open streams and the 3RTO

net/quic/core/crypto/crypto_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_CORE_CRYPTO_CRYPTO_PROTOCOL_H_
 #define NET_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_
 
 #include <cstddef>
 #include <string>
 
@@ skipping 93 matching lines @@
 const QuicTag kACKD = TAG('A', 'C', 'K', 'D');   // Ack decimation style acking.
 const QuicTag kAKD2 = TAG('A', 'K', 'D', '2');   // Ack decimation tolerating
                                                  // out of order packets.
 const QuicTag kAKD3 = TAG('A', 'K', 'D', '3');   // Ack decimation style acking
                                                  // with 1/8 RTT acks.
 const QuicTag kAKD4 = TAG('A', 'K', 'D', '4');   // Ack decimation with 1/8 RTT
                                                  // tolerating out of order.
 const QuicTag kSSLR = TAG('S', 'S', 'L', 'R');   // Slow Start Large Reduction.
 const QuicTag kNPRR = TAG('N', 'P', 'R', 'R');   // Pace at unity instead of PRR
 const QuicTag k5RTO = TAG('5', 'R', 'T', 'O');   // Close connection on 5 RTOs
+const QuicTag k3RTO = TAG('3', 'R', 'T', 'O');   // Close connection on 3 RTOs
 const QuicTag kCTIM = TAG('C', 'T', 'I', 'M');   // Client timestamp in seconds
                                                  // since UNIX epoch.
 const QuicTag kDHDT = TAG('D', 'H', 'D', 'T');   // Disable HPACK dynamic table.
 const QuicTag kCONH = TAG('C', 'O', 'N', 'H');   // Conservative Handshake
                                                  // Retransmissions.
 const QuicTag kLFAK = TAG('L', 'F', 'A', 'K');   // Don't invoke FACK on the
                                                  // first ack.
 // TODO(fayang): Remove this connection option in QUIC_VERSION_37, in which
 // MAX_HEADER_LIST_SIZE settings frame should be supported.
 const QuicTag kSMHL = TAG('S', 'M', 'H', 'L');   // Support MAX_HEADER_LIST_SIZE
@@ skipping 143 matching lines @@
 // amplification factor of any mirror DoS attack.
 //
 // A client may pad an inchoate client hello to a size larger than
 // kClientHelloMinimumSize to make it more likely to receive a complete
 // rejection message.
 const size_t kClientHelloMinimumSize = 1024;
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_CRYPTO_CRYPTO_PROTOCOL_H_