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
112
113
114
115
116
117
118
119
120
121
122
123
124
|
#include "wanda/control/connection.hpp"
#include "wanda/proto/message.hpp"
#include <asio.hpp>
#include <limits>
namespace wanda::control
{
connection::pointer make_connection(connection::protocol::socket && socket)
{
return std::make_shared<connection>(connection::key{}, std::move(socket));
}
connection::connection(connection::key key, connection::protocol::socket socket)
: keyed{key}
, m_socket{std::move(socket)}
{
}
bool connection::add(listener * listener)
{
auto [_, inserted] = m_listeners.insert(listener);
return inserted;
}
bool connection::remove(listener * listener)
{
return m_listeners.erase(listener);
}
void connection::start()
{
if (m_state == state::unknown)
{
m_state = state::fresh;
perform_read();
}
}
void connection::send(proto::message message)
{
m_output << message << '\n';
asio::async_write(m_socket, m_out, asio::transfer_exactly(message.size() + 1), [that = shared_from_this(), this](auto const & error, auto const length) {
if (error)
{
// TODO: Handle error
}
else
{
m_out.consume(length);
}
});
}
void connection::close()
{
if (auto error = std::error_code{}; m_socket.cancel(error))
{
for (auto & listener : m_listeners)
{
listener->on_error(shared_from_this(), error);
}
}
if (auto error = std::error_code{}; m_socket.close(error))
{
for (auto & listener : m_listeners)
{
listener->on_error(shared_from_this(), error);
}
}
for (auto & listener : m_listeners)
{
listener->on_close(shared_from_this());
}
m_listeners.clear();
}
void connection::update(state state)
{
m_state = state;
}
connection::state connection::current_state() const
{
return m_state;
}
void connection::perform_read()
{
asio::async_read_until(m_socket, m_in, '\n', [that = shared_from_this(), this](auto const & error, auto const length) {
if (error)
{
for (auto & listener : m_listeners)
{
listener->on_error(shared_from_this(), error);
}
close();
}
else
{
auto msg = proto::message{};
m_input >> msg;
if (!m_input)
{
m_input.ignore(std::numeric_limits<std::streamsize>::max());
m_input.clear();
}
else
{
for (auto & listener : m_listeners)
{
listener->on_received(shared_from_this(), msg);
}
}
perform_read();
}
});
}
} // namespace wanda::control
|
