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
|
package socket
import (
"context"
"fmt"
"log"
"net"
"time"
"tunnel/pkg/server/env"
)
const defaultTimeout = 5 * time.Second
type dialSocket struct {
Proto string `opts:"default:tcp"`
Addr string `opts:"required"`
}
func (s *dialSocket) String() string {
return fmt.Sprintf("%s/%s", s.Proto, s.Addr)
}
func (s *dialSocket) New(e env.Env) (Conn, error) {
return dial(context.TODO(), e, s.Proto, s.Addr)
}
func dial(ctx context.Context, e env.Env, proto, addr string) (*conn, error) {
ctx, cancel := context.WithTimeout(ctx, defaultTimeout)
defer cancel()
var d net.Dialer
proto, addr = parseProtoAddr(proto, e.Expand(addr))
conn, err := d.DialContext(ctx, proto, addr)
if err != nil {
return nil, err
}
la, ra := conn.LocalAddr(), conn.RemoteAddr()
desc := fmt.Sprintf("%s/%s->%s", la.Network(), la, ra)
info := fmt.Sprintf(">%s/%s", ra.Network(), ra)
log.Println("dial", desc)
return newConn(conn, desc, info), nil
}
func (s *dialSocket) Close() {
}
func init() {
register("dial", "connect to the network address", dialSocket{})
}
|
