code: @Test public void readNameValueBlockDropsForbiddenHeadersSpdy3() throws IOException {
    List<Header> headerBlock=headerEntries(":status","200 OK",":version","HTTP/1.1","connection","close");
    Request request=new Request.Builder().url("http://square.com/").build();
    Response response=SpdyTransport.readNameValueBlock(headerBlock,Protocol.SPDY_3).request(request).build();
    Headers headers=response.headers();
    assertEquals(1,headers.size());
    assertEquals(OkHeaders.SELECTED_PROTOCOL,headers.name(0));
    assertEquals(Protocol.SPDY_3.name.utf8(),headers.value(0));
  }
  