Support for easier parsing and creation of Cookie

[tamalsaha]

We can get the header keys from Metadata. But the related parsing code from Cookies in private in net/http package. Is there any way those can be exposed from Metadata or net/http package?
https://golang.org/src/net/http/cookie.go#L198

Thanks.

[menghanl]

We don't have support for that.
But I believe you should be able to do something like

cookies := (&http.Request{Header: metadata}).Cookies()

[tamalsaha]

I tried the above code snippet. It does not work. metadata.MD converts headers keys into lower case. On the other hand Request.Header, converts all keys to upper case.So, you need to do the following to make things work:

package auth

import (
	"fmt"
	"net/http"
	"testing"

	"google.golang.org/grpc/metadata"
)

func TestGetFromCookie(t *testing.T) {
	md := metadata.Pairs("Key-A", "Val-A")
	req := &http.Request{
		Header: http.Header{},
	}
	for k, v := range md {
		for _, val := range v {
			req.Header.Add(k, val)
		}
	}
	// req := &http.Request{Header: http.Header(md)}
	fmt.Println(req.Header.Get("Key-A"))
}