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
|
package event
import (
"fmt"
"time"
"github.com/pion/webrtc/v3"
"gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/ptutil/safelog"
)
type SnowflakeEvent interface {
IsSnowflakeEvent()
String() string
}
type EventOnOfferCreated struct {
SnowflakeEvent
WebRTCLocalDescription *webrtc.SessionDescription
Error error
}
func (e EventOnOfferCreated) String() string {
if e.Error != nil {
scrubbed := safelog.Scrub([]byte(e.Error.Error()))
return fmt.Sprintf("offer creation failure %s", scrubbed)
}
return "offer created"
}
type EventOnBrokerRendezvous struct {
SnowflakeEvent
WebRTCRemoteDescription *webrtc.SessionDescription
Error error
}
func (e EventOnBrokerRendezvous) String() string {
if e.Error != nil {
scrubbed := safelog.Scrub([]byte(e.Error.Error()))
return fmt.Sprintf("broker failure %s", scrubbed)
}
return "broker rendezvous peer received"
}
type EventOnSnowflakeConnected struct {
SnowflakeEvent
}
func (e EventOnSnowflakeConnected) String() string {
return "connected"
}
type EventOnSnowflakeConnectionFailed struct {
SnowflakeEvent
Error error
}
func (e EventOnSnowflakeConnectionFailed) String() string {
scrubbed := safelog.Scrub([]byte(e.Error.Error()))
return fmt.Sprintf("trying a new proxy: %s", scrubbed)
}
type EventOnProxyStarting struct {
SnowflakeEvent
}
func (e EventOnProxyStarting) String() string {
return "Proxy starting"
}
type EventOnProxyClientConnected struct {
SnowflakeEvent
}
func (e EventOnProxyClientConnected) String() string {
return fmt.Sprintf("client connected")
}
type EventOnProxyConnectionOver struct {
SnowflakeEvent
InboundTraffic int64
OutboundTraffic int64
}
func (e EventOnProxyConnectionOver) String() string {
return fmt.Sprintf("Proxy connection closed")
}
type EventOnProxyStats struct {
SnowflakeEvent
ConnectionCount int
InboundBytes, OutboundBytes int64
InboundUnit, OutboundUnit string
SummaryInterval time.Duration
}
func (e EventOnProxyStats) String() string {
statString := fmt.Sprintf("In the last %v, there were %v completed connections. Traffic Relayed ↓ %v %v (%.2f %v%s), ↑ %v %v (%.2f %v%s).",
e.SummaryInterval.String(), e.ConnectionCount,
e.InboundBytes, e.InboundUnit, float64(e.InboundBytes)/e.SummaryInterval.Seconds(), e.InboundUnit, "/s",
e.OutboundBytes, e.OutboundUnit, float64(e.OutboundBytes)/e.SummaryInterval.Seconds(), e.OutboundUnit, "/s")
return statString
}
type EventOnCurrentNATTypeDetermined struct {
SnowflakeEvent
CurNATType string
}
func (e EventOnCurrentNATTypeDetermined) String() string {
return fmt.Sprintf("NAT type: %v", e.CurNATType)
}
type SnowflakeEventReceiver interface {
// OnNewSnowflakeEvent notify receiver about a new event
// This method MUST not block
OnNewSnowflakeEvent(event SnowflakeEvent)
}
type SnowflakeEventDispatcher interface {
SnowflakeEventReceiver
// AddSnowflakeEventListener allow receiver(s) to receive event notification
// when OnNewSnowflakeEvent is called on the dispatcher.
// Every event listener added will be called when an event is received by the dispatcher.
// The order each listener is called is undefined.
AddSnowflakeEventListener(receiver SnowflakeEventReceiver)
RemoveSnowflakeEventListener(receiver SnowflakeEventReceiver)
}
|
