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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 // | 4 // |
5 // Handles packets for connection_ids in time wait state by discarding the | 5 // Handles packets for connection_ids in time wait state by discarding the |
6 // packet and sending the clients a public reset packet with exponential | 6 // packet and sending the clients a public reset packet with exponential |
7 // backoff. | 7 // backoff. |
8 | 8 |
9 #ifndef NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_ | 9 #ifndef NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_ |
10 #define NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_ | 10 #define NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_ |
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41 public: | 41 public: |
42 // writer - the entity that writes to the socket. (Owned by the dispatcher) | 42 // writer - the entity that writes to the socket. (Owned by the dispatcher) |
43 // visitor - the entity that manages blocked writers. (The dispatcher) | 43 // visitor - the entity that manages blocked writers. (The dispatcher) |
44 // helper - used to run clean up alarms. (Owned by the dispatcher) | 44 // helper - used to run clean up alarms. (Owned by the dispatcher) |
45 QuicTimeWaitListManager(QuicPacketWriter* writer, | 45 QuicTimeWaitListManager(QuicPacketWriter* writer, |
46 QuicServerSessionVisitor* visitor, | 46 QuicServerSessionVisitor* visitor, |
47 QuicConnectionHelperInterface* helper, | 47 QuicConnectionHelperInterface* helper, |
48 const QuicVersionVector& supported_versions); | 48 const QuicVersionVector& supported_versions); |
49 ~QuicTimeWaitListManager() override; | 49 ~QuicTimeWaitListManager() override; |
50 | 50 |
51 // Adds the given connection_id to time wait state for | 51 // Adds the given connection_id to time wait state for time_wait_period_. |
52 // time_wait_period_. Henceforth, any packet bearing this | 52 // Henceforth, any packet bearing this connection_id should not be processed |
53 // connection_id should not be processed while the connection_id | 53 // while the connection_id remains in this list. If a non-nullptr |
54 // remains in this list. If a non-nullptr |close_packet| is | 54 // |close_packet| is provided, the TimeWaitListManager takes ownership of it |
55 // provided, the TimeWaitListManager takes ownership of it and sends | 55 // and sends it again when packets are received for added connection_ids. If |
56 // it again when packets are received for added connection_ids. If | 56 // nullptr, a public reset packet is sent with the specified |version|. |
57 // nullptr, a public reset packet is sent with the specified | 57 // DCHECKs that connection_id is not already on the list. "virtual" to |
58 // |version|. DCHECKs that connection_id is not already on the list. | 58 // override in tests. |
59 // virtual to override in tests. | |
60 virtual void AddConnectionIdToTimeWait(QuicConnectionId connection_id, | 59 virtual void AddConnectionIdToTimeWait(QuicConnectionId connection_id, |
61 QuicVersion version, | 60 QuicVersion version, |
62 QuicEncryptedPacket* close_packet); | 61 QuicEncryptedPacket* close_packet); |
63 | 62 |
64 // Returns true if the connection_id is in time wait state, false otherwise. | 63 // Returns true if the connection_id is in time wait state, false otherwise. |
65 // Packets received for this connection_id should not lead to creation of new | 64 // Packets received for this connection_id should not lead to creation of new |
66 // QuicSessions. | 65 // QuicSessions. |
67 bool IsConnectionIdInTimeWait(QuicConnectionId connection_id) const; | 66 bool IsConnectionIdInTimeWait(QuicConnectionId connection_id) const; |
68 | 67 |
69 // Called when a packet is received for a connection_id that is in time wait | 68 // Called when a packet is received for a connection_id that is in time wait |
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181 // Interface that manages blocked writers. | 180 // Interface that manages blocked writers. |
182 QuicServerSessionVisitor* visitor_; | 181 QuicServerSessionVisitor* visitor_; |
183 | 182 |
184 DISALLOW_COPY_AND_ASSIGN(QuicTimeWaitListManager); | 183 DISALLOW_COPY_AND_ASSIGN(QuicTimeWaitListManager); |
185 }; | 184 }; |
186 | 185 |
187 } // namespace tools | 186 } // namespace tools |
188 } // namespace net | 187 } // namespace net |
189 | 188 |
190 #endif // NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_ | 189 #endif // NET_TOOLS_QUIC_QUIC_TIME_WAIT_LIST_MANAGER_H_ |
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