|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace unreal4u\MQTT\Protocol; |
|
6
|
|
|
|
|
7
|
|
|
use unreal4u\MQTT\Exceptions\Connect\NoConnectionParametersDefined; |
|
8
|
|
|
use unreal4u\MQTT\Exceptions\MustProvideUsername; |
|
9
|
|
|
use unreal4u\MQTT\Internals\ProtocolBase; |
|
10
|
|
|
use unreal4u\MQTT\Internals\WritableContent; |
|
11
|
|
|
use unreal4u\MQTT\Internals\WritableContentInterface; |
|
12
|
|
|
use unreal4u\MQTT\Protocol\Connect\Parameters; |
|
13
|
|
|
use unreal4u\MQTT\Utilities; |
|
14
|
|
|
|
|
15
|
|
|
/** |
|
16
|
|
|
* After a Network Connection is established by a Client to a Server, the first Packet sent from the Client to the |
|
17
|
|
|
* Server MUST be a CONNECT Packet |
|
18
|
|
|
*/ |
|
19
|
|
|
final class Connect extends ProtocolBase implements WritableContentInterface |
|
20
|
|
|
{ |
|
21
|
|
|
use WritableContent; |
|
22
|
|
|
|
|
23
|
|
|
const CONTROL_PACKET_VALUE = 1; |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* @var Parameters |
|
27
|
|
|
*/ |
|
28
|
|
|
private $connectionParameters; |
|
29
|
|
|
|
|
30
|
|
|
/** |
|
31
|
|
|
* Saves the mandatory connection parameters onto this object |
|
32
|
|
|
* @param Parameters $connectionParameters |
|
33
|
|
|
* |
|
34
|
|
|
* @return Connect |
|
35
|
|
|
*/ |
|
36
|
5 |
|
public function setConnectionParameters(Parameters $connectionParameters): self |
|
37
|
|
|
{ |
|
38
|
5 |
|
$this->connectionParameters = $connectionParameters; |
|
39
|
5 |
|
return $this; |
|
40
|
|
|
} |
|
41
|
|
|
|
|
42
|
|
|
/** |
|
43
|
|
|
* Get the connection parameters from the private object |
|
44
|
|
|
* |
|
45
|
|
|
* @return Parameters |
|
46
|
|
|
* @throws \unreal4u\MQTT\Exceptions\Connect\NoConnectionParametersDefined |
|
47
|
|
|
*/ |
|
48
|
2 |
|
public function getConnectionParameters(): Parameters |
|
49
|
|
|
{ |
|
50
|
2 |
|
if ($this->connectionParameters === null) { |
|
51
|
1 |
|
throw new NoConnectionParametersDefined('You must pass on the connection parameters before connecting'); |
|
52
|
|
|
} |
|
53
|
|
|
|
|
54
|
1 |
|
return $this->connectionParameters; |
|
55
|
|
|
} |
|
56
|
|
|
|
|
57
|
|
|
/** |
|
58
|
|
|
* @return string |
|
59
|
|
|
* @throws \OutOfRangeException |
|
60
|
|
|
*/ |
|
61
|
1 |
|
public function createVariableHeader(): string |
|
62
|
|
|
{ |
|
63
|
1 |
|
$bitString = $this->createUTF8String('MQTT'); // Connect MUST begin with MQTT |
|
64
|
1 |
|
$bitString .= $this->connectionParameters->getProtocolVersionBinaryRepresentation(); // Protocol level |
|
65
|
1 |
|
$bitString .= \chr($this->connectionParameters->getFlags()); |
|
66
|
1 |
|
$bitString .= Utilities::convertNumberToBinaryString($this->connectionParameters->keepAlivePeriod); |
|
67
|
1 |
|
return $bitString; |
|
68
|
|
|
} |
|
69
|
|
|
|
|
70
|
3 |
|
public function createPayload(): string |
|
71
|
|
|
{ |
|
72
|
3 |
|
$output = ''; |
|
73
|
|
|
// The order in a connect string is clientId first |
|
74
|
3 |
|
if ($this->connectionParameters->getClientId() !== '') { |
|
75
|
3 |
|
$output .= $this->createUTF8String($this->connectionParameters->getClientId()); |
|
76
|
|
|
} |
|
77
|
|
|
|
|
78
|
|
|
// Then the willTopic if it is set |
|
79
|
3 |
|
if ($this->connectionParameters->getWillTopic() !== '') { |
|
80
|
1 |
|
$output .= $this->createUTF8String($this->connectionParameters->getWillTopic()); |
|
81
|
|
|
} |
|
82
|
|
|
|
|
83
|
|
|
// The willMessage will come next |
|
84
|
3 |
|
if ($this->connectionParameters->getWillMessage() !== '') { |
|
85
|
1 |
|
$output .= $this->createUTF8String($this->connectionParameters->getWillMessage()); |
|
86
|
|
|
} |
|
87
|
|
|
|
|
88
|
|
|
// If the username is set, it will come next |
|
89
|
3 |
|
if ($this->connectionParameters->getUsername() !== '') { |
|
90
|
1 |
|
$output .= $this->createUTF8String($this->connectionParameters->getUsername()); |
|
91
|
|
|
} |
|
92
|
|
|
|
|
93
|
|
|
// And finally the password as last parameter |
|
94
|
3 |
|
if ($this->connectionParameters->getPassword() !== '') { |
|
95
|
2 |
|
if ($this->connectionParameters->getUsername() === '') { |
|
96
|
1 |
|
throw new MustProvideUsername('A password can not be set without a username! Please set username'); |
|
97
|
|
|
} |
|
98
|
1 |
|
$output .= $this->createUTF8String($this->connectionParameters->getPassword()); |
|
99
|
|
|
} |
|
100
|
|
|
|
|
101
|
2 |
|
return $output; |
|
102
|
|
|
} |
|
103
|
|
|
|
|
104
|
1 |
|
public function shouldExpectAnswer(): bool |
|
105
|
|
|
{ |
|
106
|
1 |
|
return true; |
|
107
|
|
|
} |
|
108
|
|
|
} |
|
109
|
|
|
|
unreal4u /
mqtt
