blob: 7c1436e4b3c4537bc590ffcfda7625df3552699f (
plain)
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
|
package socket
import (
"tunnel/pkg/server/env"
"tunnel/pkg/server/queue"
)
type deferSocket struct {
dialSocket `opts:"inline"`
}
type deferConn struct {
sock S
wait chan bool
env env.Env
conn Conn
}
func (s *deferSocket) New(env env.Env) (Conn, error) {
c := &deferConn{
sock: &s.dialSocket,
wait: make(chan bool),
env: env,
}
return c, nil
}
func (c *deferConn) String() string {
return "defer"
}
func (c *deferConn) Send(wq queue.Q) error {
if !<-c.wait {
return nil
} else {
return c.conn.Send(wq)
}
}
func (c *deferConn) Recv(rq queue.Q) error {
b := <-rq
if b == nil {
c.wait <- false
return nil
}
conn, err := c.sock.New(c.env)
if err != nil {
c.wait <- false
return err
}
c.conn = conn
c.wait <- true
q := queue.New()
go func() {
q <- b
queue.Copy(rq, q)
close(q)
}()
defer q.Dry()
return c.conn.Recv(q)
}
func (c *deferConn) Close() (err error) {
if c.conn != nil {
err = c.conn.Close()
}
return
}
func init() {
register("defer", deferSocket{})
}
|
