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http_utils.go
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http_utils.go
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/*
* Copyright 2020 The Dragonfly Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package httputils
import "net/http"
// HeaderToMap coverts request headers to map[string]string.
func HeaderToMap(header http.Header) map[string]string {
m := make(map[string]string)
for k, v := range header {
m[k] = v[0]
}
return m
}
// MapToHeader coverts map[string]string to request headers.
func MapToHeader(m map[string]string) http.Header {
var h = http.Header{}
for k, v := range m {
h.Set(k, v)
}
return h
}
// PickHeader pick header with key.
func PickHeader(header http.Header, key, defaultValue string) string {
v := header.Get(key)
if v != "" {
header.Del(key)
return v
}
return defaultValue
}