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path: root/go/vendor/github.com/grpc-ecosystem/go-grpc-middleware/util/metautils/single_key.go
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// Copyright 2016 Michal Witkowski. All Rights Reserved.
// See LICENSE for licensing terms.

package metautils

import (
	"encoding/base64"
	"strings"
)

const (
	binHdrSuffix = "-bin"
)

func encodeKeyValue(k, v string) (string, string) {
	k = strings.ToLower(k)
	if strings.HasSuffix(k, binHdrSuffix) {
		val := base64.StdEncoding.EncodeToString([]byte(v))
		v = string(val)
	}
	return k, v
}