-
Notifications
You must be signed in to change notification settings - Fork 207
/
cfg.go
234 lines (201 loc) · 6.17 KB
/
cfg.go
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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
package conf
import (
"errors"
"fmt"
"net/url"
"time"
"github.com/Ehco1996/ehco/internal/constant"
"github.com/Ehco1996/ehco/internal/lb"
"go.uber.org/zap"
)
const (
ProtocolHTTP = "http"
ProtocolTLS = "tls"
WS_HANDSHAKE_PATH = "handshake"
WS_QUERY_REMOTE_ADDR = "remote_addr"
)
type WSConfig struct {
Path string `json:"path,omitempty"`
RemoteAddr string `json:"remote_addr,omitempty"`
}
func (w *WSConfig) Clone() *WSConfig {
return &WSConfig{
Path: w.Path,
RemoteAddr: w.RemoteAddr,
}
}
type Options struct {
EnableUDP bool `json:"enable_udp,omitempty"`
EnableMultipathTCP bool `json:"enable_multipath_tcp,omitempty"`
// connection limit
MaxConnection int `json:"max_connection,omitempty"`
BlockedProtocols []string `json:"blocked_protocols,omitempty"`
MaxReadRateKbps int64 `json:"max_read_rate_kbps,omitempty"`
// ws related
WSConfig *WSConfig `json:"ws_config,omitempty"`
DialTimeoutSec int `json:"dial_timeout_sec,omitempty"`
IdleTimeoutSec int `json:"idle_timeout_sec,omitempty"`
ReadTimeoutSec int `json:"read_timeout_sec,omitempty"`
SniffTimeoutSec int `json:"sniff_timeout_sec,omitempty"`
// timeout in duration
DialTimeout time.Duration `json:"-"`
IdleTimeout time.Duration `json:"-"`
ReadTimeout time.Duration `json:"-"`
SniffTimeout time.Duration `json:"-"`
}
func (o *Options) Clone() *Options {
opt := &Options{
EnableUDP: o.EnableUDP,
EnableMultipathTCP: o.EnableMultipathTCP,
MaxConnection: o.MaxConnection,
MaxReadRateKbps: o.MaxReadRateKbps,
BlockedProtocols: make([]string, len(o.BlockedProtocols)),
}
copy(opt.BlockedProtocols, o.BlockedProtocols)
if o.WSConfig != nil {
opt.WSConfig = o.WSConfig.Clone()
}
return opt
}
type Config struct {
Label string `json:"label,omitempty"`
Listen string `json:"listen"`
ListenType constant.RelayType `json:"listen_type"`
TransportType constant.RelayType `json:"transport_type"`
Remotes []string `json:"remotes"`
Options *Options `json:"options,omitempty"`
}
func (r *Config) GetWSHandShakePath() string {
if r.Options != nil && r.Options.WSConfig != nil && r.Options.WSConfig.Path != "" {
return r.Options.WSConfig.Path
}
return WS_HANDSHAKE_PATH
}
func (r *Config) GetWSRemoteAddr(baseAddr string) (string, error) {
addr, err := url.JoinPath(baseAddr, r.GetWSHandShakePath())
if err != nil {
return "", err
}
if r.Options != nil && r.Options.WSConfig != nil && r.Options.WSConfig.RemoteAddr != "" {
addr += fmt.Sprintf("?%s=%s", WS_QUERY_REMOTE_ADDR, r.Options.WSConfig.RemoteAddr)
}
return addr, nil
}
func (r *Config) Adjust() error {
if r.Label == "" {
r.Label = r.DefaultLabel()
zap.S().Debugf("label is empty, set default label:%s", r.Label)
}
if r.Options == nil {
r.Options = newDefaultOptions()
} else {
r.Options.DialTimeout = getDuration(r.Options.DialTimeoutSec, constant.DefaultDialTimeOut)
r.Options.IdleTimeout = getDuration(r.Options.IdleTimeoutSec, constant.DefaultIdleTimeOut)
r.Options.ReadTimeout = getDuration(r.Options.ReadTimeoutSec, constant.DefaultReadTimeOut)
r.Options.SniffTimeout = getDuration(r.Options.SniffTimeoutSec, constant.DefaultSniffTimeOut)
}
return nil
}
func (r *Config) Validate() error {
if err := r.Adjust(); err != nil {
return errors.New("adjust config failed")
}
if err := r.validateType(); err != nil {
return err
}
if r.Listen == "" {
return fmt.Errorf("invalid listen: %s", r.Listen)
}
for _, addr := range r.Remotes {
if addr == "" {
return fmt.Errorf("invalid remote addr: %s", addr)
}
}
for _, protocol := range r.Options.BlockedProtocols {
if protocol != ProtocolHTTP && protocol != ProtocolTLS {
return fmt.Errorf("invalid blocked protocol: %s", protocol)
}
}
return nil
}
func (r *Config) Clone() *Config {
new := &Config{
Listen: r.Listen,
ListenType: r.ListenType,
TransportType: r.TransportType,
Label: r.Label,
Options: r.Options.Clone(),
}
new.Remotes = make([]string, len(r.Remotes))
copy(new.Remotes, r.Remotes)
return new
}
func (r *Config) Different(new *Config) bool {
if r.Listen != new.Listen ||
r.ListenType != new.ListenType ||
r.TransportType != new.TransportType ||
r.Label != new.Label {
return true
}
if len(r.Remotes) != len(new.Remotes) {
return true
}
for i, addr := range r.Remotes {
if addr != new.Remotes[i] {
return true
}
}
return false
}
// todo make this shorter and more readable
func (r *Config) DefaultLabel() string {
defaultLabel := fmt.Sprintf("<At=%s To=%s By=%s>",
r.Listen, r.Remotes, r.TransportType)
return defaultLabel
}
func (r *Config) ToRemotesLB() lb.RoundRobin {
tcpNodeList := make([]*lb.Node, len(r.Remotes))
for idx, addr := range r.Remotes {
tcpNodeList[idx] = &lb.Node{Address: addr}
}
return lb.NewRoundRobin(tcpNodeList)
}
func (r *Config) GetAllRemotes() []*lb.Node {
lb := r.ToRemotesLB()
return lb.GetAll()
}
func (r *Config) GetLoggerName() string {
return fmt.Sprintf("%s(%s<->%s)", r.Label, r.ListenType, r.TransportType)
}
func (r *Config) validateType() error {
if r.ListenType != constant.RelayTypeRaw &&
r.ListenType != constant.RelayTypeWS &&
r.ListenType != constant.RelayTypeWSS {
return fmt.Errorf("invalid listen type:%s", r.ListenType)
}
if r.TransportType != constant.RelayTypeRaw &&
r.TransportType != constant.RelayTypeWS &&
r.TransportType != constant.RelayTypeWSS {
return fmt.Errorf("invalid transport type:%s", r.TransportType)
}
return nil
}
func getDuration(seconds int, defaultDuration time.Duration) time.Duration {
if seconds > 0 {
return time.Duration(seconds) * time.Second
}
return defaultDuration
}
func newDefaultOptions() *Options {
return &Options{
EnableMultipathTCP: true,
DialTimeout: constant.DefaultDialTimeOut,
DialTimeoutSec: int(constant.DefaultDialTimeOut.Seconds()),
IdleTimeout: constant.DefaultIdleTimeOut,
IdleTimeoutSec: int(constant.DefaultIdleTimeOut.Seconds()),
ReadTimeout: constant.DefaultReadTimeOut,
ReadTimeoutSec: int(constant.DefaultReadTimeOut.Seconds()),
SniffTimeout: constant.DefaultSniffTimeOut,
SniffTimeoutSec: int(constant.DefaultSniffTimeOut.Seconds()),
}
}