1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
// Copyright 2018 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 OSP_IMPL_QUIC_QUIC_SERVER_H_
#define OSP_IMPL_QUIC_QUIC_SERVER_H_
#include <cstdint>
#include <map>
#include <memory>
#include "osp/impl/quic/quic_connection_factory.h"
#include "osp/impl/quic/quic_service_common.h"
#include "osp/public/protocol_connection_server.h"
#include "platform/api/task_runner.h"
#include "platform/api/time.h"
#include "platform/base/ip_address.h"
#include "util/alarm.h"
namespace openscreen {
namespace osp {
// This class is the default implementation of ProtocolConnectionServer for the
// library. It manages connections to other endpoints as well as the lifetime
// of each incoming and outgoing stream. It works in conjunction with a
// QuicConnectionFactory implementation and MessageDemuxer.
// QuicConnectionFactory provides the ability to make a new QUIC
// connection from packets received on its server sockets. Incoming data is
// given to the QuicServer by the underlying QUIC implementation (through
// QuicConnectionFactory) and this is in turn handed to MessageDemuxer for
// routing CBOR messages.
class QuicServer final : public ProtocolConnectionServer,
public QuicConnectionFactory::ServerDelegate,
public ServiceConnectionDelegate::ServiceDelegate {
public:
QuicServer(const ServerConfig& config,
MessageDemuxer* demuxer,
std::unique_ptr<QuicConnectionFactory> connection_factory,
ProtocolConnectionServer::Observer* observer,
ClockNowFunctionPtr now_function,
TaskRunner* task_runner);
~QuicServer() override;
// ProtocolConnectionServer overrides.
bool Start() override;
bool Stop() override;
bool Suspend() override;
bool Resume() override;
std::unique_ptr<ProtocolConnection> CreateProtocolConnection(
uint64_t endpoint_id) override;
// QuicProtocolConnection::Owner overrides.
void OnConnectionDestroyed(QuicProtocolConnection* connection) override;
// ServiceConnectionDelegate::ServiceDelegate overrides.
uint64_t OnCryptoHandshakeComplete(ServiceConnectionDelegate* delegate,
uint64_t connection_id) override;
void OnIncomingStream(
std::unique_ptr<QuicProtocolConnection> connection) override;
void OnConnectionClosed(uint64_t endpoint_id,
uint64_t connection_id) override;
void OnDataReceived(uint64_t endpoint_id,
uint64_t connection_id,
const uint8_t* data,
size_t data_size) override;
private:
void CloseAllConnections();
// QuicConnectionFactory::ServerDelegate overrides.
QuicConnection::Delegate* NextConnectionDelegate(
const IPEndpoint& source) override;
void OnIncomingConnection(
std::unique_ptr<QuicConnection> connection) override;
// Deletes dead QUIC connections then returns the time interval before this
// method should be run again.
void Cleanup();
const std::vector<IPEndpoint> connection_endpoints_;
std::unique_ptr<QuicConnectionFactory> connection_factory_;
std::unique_ptr<ServiceConnectionDelegate> pending_connection_delegate_;
// Maps an IPEndpoint to a generated endpoint ID. This is used to insulate
// callers from post-handshake changes to a connections actual peer endpoint.
std::map<IPEndpoint, uint64_t> endpoint_map_;
// Value that will be used for the next new endpoint in a Connect call.
uint64_t next_endpoint_id_ = 0;
// Maps endpoint addresses to data about connections that haven't successfully
// completed the QUIC handshake.
std::map<IPEndpoint, ServiceConnectionData> pending_connections_;
// Maps endpoint IDs to data about connections that have successfully
// completed the QUIC handshake.
std::map<uint64_t, ServiceConnectionData> connections_;
// Connections (endpoint IDs) that need to be destroyed, but have to wait for
// the next event loop due to the underlying QUIC implementation's way of
// referencing them.
std::vector<uint64_t> delete_connections_;
Alarm cleanup_alarm_;
};
} // namespace osp
} // namespace openscreen
#endif // OSP_IMPL_QUIC_QUIC_SERVER_H_
|
