code: @Override
    public void deliver(WriteStream os, OutHttp2 outHttp)
      throws IOException
    {
      OutHeader outHeader = outHttp.getOutHeader();
      
      int streamId = streamId(outHttp);
      
      outHeader.openHeaders(streamId,
                            getPad(),
                            getPriorityDependency(), 
                            getPriorityWeight(),
                            isPriorityExclusive(),
                            getFlagsHttp());
      
      writeHeaders(outHeader);
      
      outHeader.closeHeaders();
    }
docs: Deliver the message
  
  @param os the physical output stream
  @param writerHttp the writer context