mirror of https://github.com/siddontang/go.git
37 lines
779 B
Go
37 lines
779 B
Go
|
package websocket
|
||
|
|
|
||
|
|
import (
|
||
|
|
"crypto/rand"
|
||
|
|
"crypto/sha1"
|
||
|
|
"encoding/base64"
|
||
|
|
"errors"
|
||
|
|
"io"
|
||
|
|
)
|
||
|
|
|
||
|
|
var keyGUID = []byte("258EAFA5-E914-47DA-95CA-C5AB0DC85B11")
|
||
|
|
|
||
|
|
func calcAcceptKey(key string) string {
|
||
|
|
h := sha1.New()
|
||
|
|
h.Write([]byte(key))
|
||
|
|
h.Write(keyGUID)
|
||
|
|
return base64.StdEncoding.EncodeToString(h.Sum(nil))
|
||
|
|
}
|
||
|
|
|
||
|
|
func calcKey() (string, error) {
|
||
|
|
p := make([]byte, 16)
|
||
|
|
if _, err := io.ReadFull(rand.Reader, p); err != nil {
|
||
|
|
return "", err
|
||
|
|
}
|
||
|
|
return base64.StdEncoding.EncodeToString(p), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func HandleCloseFrame(buf []byte) (int16, string, error) {
|
||
|
|
|
||
|
|
if len(buf) < 2 {
|
||
|
|
return 0, "", errors.New("close frame msg's length less than 2")
|
||
|
|
}
|
||
|
|
code := int16(buf[0])<<8 + int16(buf[1])
|
||
|
|
reason := string(buf[2:])
|
||
|
|
return code, reason, nil
|
||
|
|
}
|