MarshalResponse maybe panic

[wen313]

func MarshalResponse(msg []byte) (Response, error) {
	var j map[string]interface{}

	err := jsonUnmarshal(msg, &j)
	if err != nil {
		return Response{}, gremerror.NewUnmarshalError("MarshalResponse", msg, err)
	}

	var (
		status = j["status"].(map[string]interface{})
		result = j["result"].(map[string]interface{})
		code   = status["code"].(float64)
		resp   = Response{Code: int(code)}
	)

	err = responseDetectError(resp.Code)
	if err != nil {
		resp.Data = err // Use the Data field as a vehicle for the error.
	} else {
		resp.Data = result["data"]
	}
	resp.RequestID = j["requestId"].(string)

	return resp, nil
}

resp.RequestID = j["requestId"].(string) maybe cause panic,panic message:
interface conversion: interface {} is nil, not string

[AdallomRoy]

I can happen when your request is too long (larger than the gorilla buffer, 8192 bytes I think) and the request is split. In that case the server doesn't see the request ID so in the response it doesn't send one.
The current solution is to increase the request buffer, or make your request smaller.