forked from xjasonlyu/tun2socks
-
Notifications
You must be signed in to change notification settings - Fork 0
/
metadata.go
66 lines (55 loc) · 1.33 KB
/
metadata.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
package metadata
import (
"net"
"strconv"
)
// Metadata contains metadata of transport protocol sessions.
type Metadata struct {
Network Network `json:"network"`
SrcIP net.IP `json:"sourceIP"`
MidIP net.IP `json:"dialerIP"`
DstIP net.IP `json:"destinationIP"`
SrcPort uint16 `json:"sourcePort"`
MidPort uint16 `json:"dialerPort"`
DstPort uint16 `json:"destinationPort"`
}
func (m *Metadata) DestinationAddress() string {
return net.JoinHostPort(m.DstIP.String(), strconv.FormatUint(uint64(m.DstPort), 10))
}
func (m *Metadata) SourceAddress() string {
return net.JoinHostPort(m.SrcIP.String(), strconv.FormatUint(uint64(m.SrcPort), 10))
}
func (m *Metadata) Addr() net.Addr {
return &Addr{metadata: m}
}
func (m *Metadata) TCPAddr() *net.TCPAddr {
if m.Network != TCP || m.DstIP == nil {
return nil
}
return &net.TCPAddr{
IP: m.DstIP,
Port: int(m.DstPort),
}
}
func (m *Metadata) UDPAddr() *net.UDPAddr {
if m.Network != UDP || m.DstIP == nil {
return nil
}
return &net.UDPAddr{
IP: m.DstIP,
Port: int(m.DstPort),
}
}
// Addr implements the net.Addr interface.
type Addr struct {
metadata *Metadata
}
func (a *Addr) Metadata() *Metadata {
return a.metadata
}
func (a *Addr) Network() string {
return a.metadata.Network.String()
}
func (a *Addr) String() string {
return a.metadata.DestinationAddress()
}