const std::string &http_header,
const std::string &stream_header);
const std::string &http_header,
const std::string &stream_header);
// These will be deferred until the next time an iteration in do_work() happens,
// and the order between them are undefined.
// These will be deferred until the next time an iteration in do_work() happens,
// and the order between them are undefined.