Correct way of sending HEADERS and DATA frames in http2?

[Ankit Gupta]

I am using golang.org/x/net/http2 and golang.org/x/net/http2/hpack packages to do low level http2 framing. For requests with only HEADERS frame sent, I want to send a empy json '{}', so I send 1 HEADERS frame and 1 DATA frame as below 

                headersframe, ok := frame.(*http2.HeadersFrame)

if ok {

println("headers frame detected")

if headersframe.StreamEnded() {

                 

// write HEADERS frame with 2 headers

      

hbytes := make([]byte, 0, 2048)

hbuffer := bytes.NewBuffer(hbytes)

hfield1 := hpack.HeaderField{

Name: ":status",

Value: "200",

Sensitive: false,}

hfield2 := hpack.HeaderField{

Name: "content-type",

Value: "application/json",

Sensitive: false,}

encoder := hpack.NewEncoder(hbuffer)

err := encoder.WriteField(hfield1)

err = encoder.WriteField(hfield2)

if err != nil {

println(err.Error())

}

hfp := http2.HeadersFrameParam{

StreamID: frame.Header().StreamID,

BlockFragment: hbuffer.Bytes(),

EndStream: false,

EndHeaders: true,

}

err = framer.WriteHeaders(hfp)

if err != nil {

println(err.Error())

}

// write DATA frame

data := []byte("{}")

framer.WriteData(frame.Header().StreamID, true, data)

                        }

return

}

On trying with curl -v https://127.0.0.1:8000 -k --http2, I get error as - 

                curl: (16) Error in the HTTP2 framing layer

Is anything missing in my way of framing response?

[helio.gu...@gmail.com]

Did you solve this problem?
If so, could I see the code?
I am trying to read the stream's priority field.