Method write_response_core

dependencies/httplib/httplib.h:5042–5117

}

inline bool Server::write_response_core(Stream &strm, bool close_connection,
                                        const Request &req, Response &res,
                                        bool need_apply_ranges) {
  assert(res.status != -1);

  if (400 <= res.status && error_handler_ &&
      error_handler_(req, res) == HandlerResponse::Handled) {
    need_apply_ranges = true;
  }

  std::string content_type;
  std::string boundary;
  if (need_apply_ranges) { apply_ranges(req, res, content_type, boundary); }

  // Prepare additional headers
  if (close_connection || req.get_header_value("Connection") == "close") {
    res.set_header("Connection", "close");
  } else {
    std::stringstream ss;
    ss << "timeout=" << keep_alive_timeout_sec_
       << ", max=" << keep_alive_max_count_;
    res.set_header("Keep-Alive", ss.str());
  }

  if (!res.has_header("Content-Type") &&
      (!res.body.empty() || res.content_length_ > 0 || res.content_provider_)) {
    res.set_header("Content-Type", "text/plain");
  }

  if (!res.has_header("Content-Length") && res.body.empty() &&
      !res.content_length_ && !res.content_provider_) {
    res.set_header("Content-Length", "0");
  }

  if (!res.has_header("Accept-Ranges") && req.method == "HEAD") {
    res.set_header("Accept-Ranges", "bytes");
  }

  if (post_routing_handler_) { post_routing_handler_(req, res); }

  // Response line and headers
  {
    detail::BufferStream bstrm;

    if (!bstrm.write_format("HTTP/1.1 %d %s\r\n", res.status,
                            detail::status_message(res.status))) {
      return false;
    }

    if (!detail::write_headers(bstrm, res.headers)) { return false; }

    // Flush buffer
    auto &data = bstrm.get_buffer();
    strm.write(data.data(), data.size());
  }

  // Body
  auto ret = true;