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
125
126
127
128
129
130
131
132
133
134
135
use ntex::io::IoBoxed;
use std::{fmt, num::NonZeroU16, rc::Rc};
use super::{codec, shared::MqttShared, sink::MqttSink};
pub struct Handshake {
io: IoBoxed,
pkt: Box<codec::Connect>,
pub(super) shared: Rc<MqttShared>,
pub(super) max_size: u32,
pub(super) max_receive: u16,
pub(super) max_topic_alias: u16,
}
impl Handshake {
pub(crate) fn new(
pkt: Box<codec::Connect>,
io: IoBoxed,
shared: Rc<MqttShared>,
max_size: u32,
max_receive: u16,
max_topic_alias: u16,
) -> Self {
Self { io, pkt, shared, max_size, max_receive, max_topic_alias }
}
#[inline]
pub fn packet(&self) -> &codec::Connect {
&self.pkt
}
#[inline]
pub fn packet_mut(&mut self) -> &mut codec::Connect {
&mut self.pkt
}
#[inline]
pub fn io(&self) -> &IoBoxed {
&self.io
}
#[inline]
pub fn sink(&self) -> MqttSink {
MqttSink::new(self.shared.clone())
}
#[inline]
pub fn ack<St>(self, st: St) -> HandshakeAck<St> {
let mut packet = codec::ConnectAck {
reason_code: codec::ConnectAckReason::Success,
topic_alias_max: self.max_topic_alias,
..codec::ConnectAck::default()
};
if self.max_size != 0 {
packet.max_packet_size = Some(self.max_size);
}
if self.max_receive != 0 {
packet.receive_max = Some(NonZeroU16::new(self.max_receive).unwrap());
}
let Handshake { io, shared, pkt, .. } = self;
let keepalive = if pkt.keep_alive != 0 {
(pkt.keep_alive >> 1).checked_add(pkt.keep_alive).unwrap_or(u16::MAX)
} else {
30
};
HandshakeAck { io, shared, keepalive, packet, session: Some(st) }
}
#[inline]
pub fn failed<St>(self, reason_code: codec::ConnectAckReason) -> HandshakeAck<St> {
HandshakeAck {
io: self.io,
shared: self.shared,
session: None,
keepalive: 30,
packet: codec::ConnectAck { reason_code, ..codec::ConnectAck::default() },
}
}
#[inline]
pub fn fail_with<St>(self, ack: codec::ConnectAck) -> HandshakeAck<St> {
HandshakeAck {
io: self.io,
shared: self.shared,
session: None,
packet: ack,
keepalive: 30,
}
}
}
impl fmt::Debug for Handshake {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.pkt.fmt(f)
}
}
pub struct HandshakeAck<St> {
pub(crate) io: IoBoxed,
pub(crate) session: Option<St>,
pub(crate) shared: Rc<MqttShared>,
pub(crate) packet: codec::ConnectAck,
pub(crate) keepalive: u16,
}
impl<St> HandshakeAck<St> {
#[inline]
pub fn keep_alive(mut self, timeout: u16) -> Self {
if timeout == 0 {
panic!("Timeout must be greater than 0")
}
self.keepalive = timeout;
self
}
#[inline]
pub fn with(mut self, f: impl FnOnce(&mut codec::ConnectAck)) -> Self {
f(&mut self.packet);
self
}
}