-
Notifications
You must be signed in to change notification settings - Fork 63
/
request.go
60 lines (55 loc) · 1.23 KB
/
request.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
package util
import (
"fmt"
"net/http"
"net/textproto"
"strings"
)
var ErrHeaderFormat = fmt.Errorf("header line wrong format: expect [key: value]")
var ErrEmptyKey = fmt.Errorf("missing header key")
func DecodeHeader(h string) (key, value string, err error) {
var ok bool
if len(h) < 3 || h[0] != '[' || h[len(h)-1] != ']' {
err = ErrHeaderFormat
return
}
h = h[1 : len(h)-1]
if key, value, ok = strings.Cut(h, ":"); !ok {
err = ErrHeaderFormat
return
}
key = strings.TrimSpace(key)
if key == "" {
err = ErrEmptyKey
return
}
value = strings.TrimSpace(value)
return
}
func DecodeHTTPConfigHeaders(headers []string) (configHTTPHeaders http.Header, err error) {
var key, value string
configHTTPHeaders = make(http.Header)
for _, h := range headers {
key, value, err = DecodeHeader(h)
if err != nil {
break
}
configHTTPHeaders.Add(key, value)
}
return
}
func EnrichRequestWithHeaders(req *http.Request, headers http.Header) {
for key, values := range headers {
key = textproto.CanonicalMIMEHeaderKey(key)
if _, ok := req.Header[key]; !ok {
// special behavior for `Host` header
if key == "Host" {
if req.Host == "" {
req.Host = values[0]
}
} else {
req.Header[key] = values
}
}
}
}