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
136
137
#[allow(missing_docs)]
pub enum Message {
Text(String),
Binary(Vec<u8>),
Ping(Vec<u8>),
Pong(Vec<u8>),
Close(CloseCode, String),
}
#[allow(missing_docs)]
#[derive(Debug, Clone)]
pub enum CloseCode {
/// Indicates a normal closure, meaning that the purpose for
/// which the connection was established has been fulfilled.
Normal,
/// Indicates that an endpoint is "going away", such as a server
/// going down or a browser having navigated away from a page.
Away,
/// Indicates that an endpoint is terminating the connection due
/// to a protocol error.
Protocol,
/// Indicates that an endpoint is terminating the connection
/// because it has received a type of data it cannot accept (e.g., an
/// endpoint that understands only text data MAY send this if it
/// receives a binary message).
Unsupported,
/// Indicates that no status code was included in a closing frame. This
/// close code makes it possible to use a single method, `on_close` to
/// handle even cases where no close code was provided.
Status,
/// Indicates an abnormal closure. If the abnormal closure was due to an
/// error, this close code will not be used. Instead, the `on_error` method
/// of the handler will be called with the error. However, if the connection
/// is simply dropped, without an error, this close code will be sent to the
/// handler.
Abnormal,
/// Indicates that an endpoint is terminating the connection
/// because it has received data within a message that was not
/// consistent with the type of the message (e.g., non-UTF-8 \[RFC3629\]
/// data within a text message).
Invalid,
/// Indicates that an endpoint is terminating the connection
/// because it has received a message that violates its policy. This
/// is a generic status code that can be returned when there is no
/// other more suitable status code (e.g., Unsupported or Size) or if there
/// is a need to hide specific details about the policy.
Policy,
/// Indicates that an endpoint is terminating the connection
/// because it has received a message that is too big for it to
/// process.
Size,
/// Indicates that an endpoint (client) is terminating the
/// connection because it has expected the server to negotiate one or
/// more extension, but the server didn't return them in the response
/// message of the WebSocket handshake. The list of extensions that
/// are needed should be given as the reason for closing.
/// Note that this status code is not used by the server, because it
/// can fail the WebSocket handshake instead.
Extension,
/// Indicates that a server is terminating the connection because
/// it encountered an unexpected condition that prevented it from
/// fulfilling the request.
Error,
/// Indicates that the server is restarting. A client may choose to reconnect,
/// and if it does, it should use a randomized delay of 5-30 seconds between attempts.
Restart,
/// Indicates that the server is overloaded and the client should either connect
/// to a different IP (when multiple targets exist), or reconnect to the same IP
/// when a user has performed an action.
Again,
#[doc(hidden)]
Tls,
#[doc(hidden)]
Reserved(u16),
#[doc(hidden)]
Iana(u16),
#[doc(hidden)]
Private(u16),
#[doc(hidden)]
Bad(u16),
}
impl From<CloseCode> for u16 {
fn from(code: CloseCode) -> Self {
Self::from(&code)
}
}
impl From<&CloseCode> for u16 {
fn from(code: &CloseCode) -> Self {
match code {
CloseCode::Normal => 1000,
CloseCode::Away => 1001,
CloseCode::Protocol => 1002,
CloseCode::Unsupported => 1003,
CloseCode::Status => 1005,
CloseCode::Abnormal => 1006,
CloseCode::Invalid => 1007,
CloseCode::Policy => 1008,
CloseCode::Size => 1009,
CloseCode::Extension => 1010,
CloseCode::Error => 1011,
CloseCode::Restart => 1012,
CloseCode::Again => 1013,
CloseCode::Tls => 1015,
CloseCode::Reserved(code)
| CloseCode::Private(code)
| CloseCode::Iana(code)
| CloseCode::Bad(code) => *code,
}
}
}
impl From<u16> for CloseCode {
fn from(code: u16) -> Self {
match code {
1000 => Self::Normal,
1001 => Self::Away,
1002 => Self::Protocol,
1003 => Self::Unsupported,
1005 => Self::Status,
1006 => Self::Abnormal,
1007 => Self::Invalid,
1008 => Self::Policy,
1009 => Self::Size,
1010 => Self::Extension,
1011 => Self::Error,
1012 => Self::Restart,
1013 => Self::Again,
1015 => Self::Tls,
1016..=2999 => Self::Reserved(code),
3000..=3999 => Self::Iana(code),
4000..=4999 => Self::Private(code),
_ => Self::Bad(code),
}
}
}