forked from v2fly/v2ray-core
-
Notifications
You must be signed in to change notification settings - Fork 0
/
outbound.go
138 lines (112 loc) · 3.76 KB
/
outbound.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
package outbound
import (
"net"
"sync"
"github.com/v2ray/v2ray-core/app"
"github.com/v2ray/v2ray-core/common/alloc"
v2io "github.com/v2ray/v2ray-core/common/io"
"github.com/v2ray/v2ray-core/common/log"
v2net "github.com/v2ray/v2ray-core/common/net"
proto "github.com/v2ray/v2ray-core/common/protocol"
raw "github.com/v2ray/v2ray-core/common/protocol/raw"
"github.com/v2ray/v2ray-core/proxy"
"github.com/v2ray/v2ray-core/proxy/internal"
vmessio "github.com/v2ray/v2ray-core/proxy/vmess/io"
"github.com/v2ray/v2ray-core/transport/dialer"
"github.com/v2ray/v2ray-core/transport/ray"
)
type VMessOutboundHandler struct {
receiverManager *ReceiverManager
}
func (this *VMessOutboundHandler) Dispatch(target v2net.Destination, payload *alloc.Buffer, ray ray.OutboundRay) error {
destination, vNextUser := this.receiverManager.PickReceiver()
command := proto.RequestCommandTCP
if target.IsUDP() {
command = proto.RequestCommandUDP
}
request := &proto.RequestHeader{
Version: raw.Version,
User: vNextUser,
Command: command,
Address: target.Address(),
Port: target.Port(),
Option: proto.RequestOptionChunkStream,
}
conn, err := dialer.Dial(destination)
if err != nil {
log.Error("Failed to open ", destination, ": ", err)
if ray != nil {
ray.OutboundOutput().Close()
}
return err
}
log.Info("VMessOut: Tunneling request to ", request.Address, " via ", destination)
defer conn.Close()
input := ray.OutboundInput()
output := ray.OutboundOutput()
var requestFinish, responseFinish sync.Mutex
requestFinish.Lock()
responseFinish.Lock()
session := raw.NewClientSession(proto.DefaultIDHash)
go this.handleRequest(session, conn, request, payload, input, &requestFinish)
go this.handleResponse(session, conn, request, destination, output, &responseFinish)
requestFinish.Lock()
responseFinish.Lock()
output.Close()
input.Release()
return nil
}
func (this *VMessOutboundHandler) handleRequest(session *raw.ClientSession, conn net.Conn, request *proto.RequestHeader, payload *alloc.Buffer, input v2io.Reader, finish *sync.Mutex) {
defer finish.Unlock()
defer payload.Release()
writer := v2io.NewBufferedWriter(conn)
defer writer.Release()
session.EncodeRequestHeader(request, writer)
if request.Option.IsChunkStream() {
vmessio.Authenticate(payload)
}
bodyWriter := session.EncodeRequestBody(writer)
bodyWriter.Write(payload.Value)
writer.SetCached(false)
var streamWriter v2io.Writer = v2io.NewAdaptiveWriter(bodyWriter)
if request.Option.IsChunkStream() {
streamWriter = vmessio.NewAuthChunkWriter(streamWriter)
}
v2io.Pipe(input, streamWriter)
if request.Option.IsChunkStream() {
streamWriter.Write(alloc.NewSmallBuffer().Clear())
}
streamWriter.Release()
return
}
func (this *VMessOutboundHandler) handleResponse(session *raw.ClientSession, conn net.Conn, request *proto.RequestHeader, dest v2net.Destination, output v2io.Writer, finish *sync.Mutex) {
defer finish.Unlock()
reader := v2io.NewBufferedReader(conn)
defer reader.Release()
header, err := session.DecodeResponseHeader(reader)
if err != nil {
log.Warning("VMessOut: Failed to read response: ", err)
return
}
go this.handleCommand(dest, header.Command)
reader.SetCached(false)
decryptReader := session.DecodeResponseBody(conn)
var bodyReader v2io.Reader
if request.Option.IsChunkStream() {
bodyReader = vmessio.NewAuthChunkReader(decryptReader)
} else {
bodyReader = v2io.NewAdaptiveReader(decryptReader)
}
v2io.Pipe(bodyReader, output)
bodyReader.Release()
return
}
func init() {
internal.MustRegisterOutboundHandlerCreator("vmess",
func(space app.Space, rawConfig interface{}) (proxy.OutboundHandler, error) {
vOutConfig := rawConfig.(*Config)
return &VMessOutboundHandler{
receiverManager: NewReceiverManager(vOutConfig.Receivers),
}, nil
})
}