-
Notifications
You must be signed in to change notification settings - Fork 222
/
proto.go
48 lines (38 loc) · 832 Bytes
/
proto.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
// Package proto implements the agent's protocol.
package proto
import (
"encoding/binary"
"io"
)
func Read(r io.Reader) (data []byte, err error) {
var b [2]byte
if _, err = io.ReadFull(r, b[:]); err == nil {
l := binary.LittleEndian.Uint16(b[:])
data = make([]byte, l)
_, err = io.ReadFull(r, data)
}
return
}
func Write(w io.Writer, verb string, args ...string) (err error) {
size := len(verb) + len(args)
for _, arg := range args {
size += len(arg)
}
var b [2]byte
binary.LittleEndian.PutUint16(b[:], uint16(size))
if _, err = w.Write(b[:]); err != nil {
return
}
if _, err = io.WriteString(w, verb); err != nil {
return
}
for _, arg := range args {
if _, err = io.WriteString(w, " "); err != nil {
break
}
if _, err = io.WriteString(w, arg); err != nil {
break
}
}
return
}