-
Notifications
You must be signed in to change notification settings - Fork 1
/
conn.go
72 lines (58 loc) · 1.38 KB
/
conn.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
package lutron
import (
"bytes"
"crypto/tls"
"encoding/json"
"fmt"
"io"
"time"
"github.com/gofrs/uuid"
)
func SendWait(conn *tls.Conn, r Request) (Response, error) {
r.Header.ClientTag = newTag()
b, err := requestJSON(r)
if err != nil {
return Response{}, err
}
if Debug {
fmt.Println("sending request (raw):")
fmt.Println(pretty(r))
}
if _, err = conn.Write(b); err != nil {
return Response{}, fmt.Errorf("error writing to conn: %w", err)
}
var buf bytes.Buffer
dec := json.NewDecoder(io.TeeReader(conn, &buf))
rsp := Response{}
// This is the wait part
// TODO: Still need a timeout on the read... and the write above...
deadline := time.Now().Add(RequestTimeout)
for time.Now().Before(deadline) {
if err := dec.Decode(&rsp); err != nil {
return rsp, fmt.Errorf("error decoding response json: %w", err)
}
if Debug {
fmt.Println("recieved response (raw):")
fmt.Println(prettyb(buf.Bytes()))
buf.Reset()
}
if rsp.Header.ClientTag == r.Header.ClientTag {
if Debug {
fmt.Println("response matches request ClientTag:", r.Header.ClientTag)
}
break
}
}
return rsp, nil
}
func newTag() string {
u, _ := uuid.NewV4()
return u.String()
}
func requestJSON(v interface{}) ([]byte, error) {
b, err := json.Marshal(v)
if err != nil {
return nil, fmt.Errorf("error marshaling request json: %w", err)
}
return append(b, '\r', '\n'), nil
}