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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 | |
3 // found in the LICENSE file. | |
4 // | |
5 // A toy server, which listens on a specified address for QUIC traffic and | |
6 // handles incoming responses. | |
7 | |
8 #ifndef NET_TOOLS_QUIC_QUIC_SERVER_H_ | |
9 #define NET_TOOLS_QUIC_QUIC_SERVER_H_ | |
10 | |
11 #include "base/basictypes.h" | |
12 #include "base/memory/scoped_ptr.h" | |
13 #include "net/base/ip_endpoint.h" | |
14 #include "net/quic/crypto/quic_crypto_server_config.h" | |
15 #include "net/quic/quic_config.h" | |
16 #include "net/quic/quic_framer.h" | |
17 #include "net/tools/epoll_server/epoll_server.h" | |
18 | |
19 namespace net { | |
20 | |
21 namespace tools { | |
22 | |
23 namespace test { | |
24 class QuicServerPeer; | |
25 } // namespace test | |
26 | |
27 class ProcessPacketInterface; | |
28 class QuicDispatcher; | |
29 | |
30 class QuicServer : public EpollCallbackInterface { | |
31 public: | |
32 QuicServer(); | |
33 QuicServer(const QuicConfig& config, | |
34 const QuicVersionVector& supported_versions); | |
35 | |
36 ~QuicServer() override; | |
37 | |
38 // Start listening on the specified address. | |
39 bool Listen(const IPEndPoint& address); | |
40 | |
41 // Wait up to 50ms, and handle any events which occur. | |
42 void WaitForEvents(); | |
43 | |
44 // Server deletion is imminent. Start cleaning up the epoll server. | |
45 void Shutdown(); | |
46 | |
47 // From EpollCallbackInterface | |
48 void OnRegistration(EpollServer* eps, int fd, int event_mask) override {} | |
49 void OnModification(int fd, int event_mask) override {} | |
50 void OnEvent(int fd, EpollEvent* event) override; | |
51 void OnUnregistration(int fd, bool replaced) override {} | |
52 | |
53 // Reads a packet from the given fd, and then passes it off to | |
54 // the QuicDispatcher. Returns true if a packet is read, false | |
55 // otherwise. | |
56 // If packets_dropped is non-null, the socket is configured to track | |
57 // dropped packets, and some packets are read, it will be set to the number of | |
58 // dropped packets. | |
59 static bool ReadAndDispatchSinglePacket(int fd, int port, | |
60 ProcessPacketInterface* processor, | |
61 QuicPacketCount* packets_dropped); | |
62 | |
63 void OnShutdown(EpollServer* eps, int fd) override {} | |
64 | |
65 void SetStrikeRegisterNoStartupPeriod() { | |
66 crypto_config_.set_strike_register_no_startup_period(); | |
67 } | |
68 | |
69 // SetProofSource sets the ProofSource that will be used to verify the | |
70 // server's certificate, and takes ownership of |source|. | |
71 void SetProofSource(ProofSource* source) { | |
72 crypto_config_.SetProofSource(source); | |
73 } | |
74 | |
75 bool overflow_supported() { return overflow_supported_; } | |
76 | |
77 QuicPacketCount packets_dropped() { return packets_dropped_; } | |
78 | |
79 int port() { return port_; } | |
80 | |
81 protected: | |
82 virtual QuicDispatcher* CreateQuicDispatcher(); | |
83 | |
84 const QuicConfig& config() const { return config_; } | |
85 const QuicCryptoServerConfig& crypto_config() const { | |
86 return crypto_config_; | |
87 } | |
88 const QuicVersionVector& supported_versions() const { | |
89 return supported_versions_; | |
90 } | |
91 EpollServer* epoll_server() { return &epoll_server_; } | |
92 | |
93 private: | |
94 friend class net::tools::test::QuicServerPeer; | |
95 | |
96 // Initialize the internal state of the server. | |
97 void Initialize(); | |
98 | |
99 // Accepts data from the framer and demuxes clients to sessions. | |
100 scoped_ptr<QuicDispatcher> dispatcher_; | |
101 // Frames incoming packets and hands them to the dispatcher. | |
102 EpollServer epoll_server_; | |
103 | |
104 // The port the server is listening on. | |
105 int port_; | |
106 | |
107 // Listening connection. Also used for outbound client communication. | |
108 int fd_; | |
109 | |
110 // If overflow_supported_ is true this will be the number of packets dropped | |
111 // during the lifetime of the server. This may overflow if enough packets | |
112 // are dropped. | |
113 QuicPacketCount packets_dropped_; | |
114 | |
115 // True if the kernel supports SO_RXQ_OVFL, the number of packets dropped | |
116 // because the socket would otherwise overflow. | |
117 bool overflow_supported_; | |
118 | |
119 // If true, use recvmmsg for reading. | |
120 bool use_recvmmsg_; | |
121 | |
122 // config_ contains non-crypto parameters that are negotiated in the crypto | |
123 // handshake. | |
124 QuicConfig config_; | |
125 // crypto_config_ contains crypto parameters for the handshake. | |
126 QuicCryptoServerConfig crypto_config_; | |
127 | |
128 // This vector contains QUIC versions which we currently support. | |
129 // This should be ordered such that the highest supported version is the first | |
130 // element, with subsequent elements in descending order (versions can be | |
131 // skipped as necessary). | |
132 QuicVersionVector supported_versions_; | |
133 | |
134 // Size of flow control receive window to advertise to clients on new | |
135 // connections. | |
136 uint32 server_initial_flow_control_receive_window_; | |
137 | |
138 DISALLOW_COPY_AND_ASSIGN(QuicServer); | |
139 }; | |
140 | |
141 } // namespace tools | |
142 } // namespace net | |
143 | |
144 #endif // NET_TOOLS_QUIC_QUIC_SERVER_H_ | |
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