src/shrpx_downstream_connection.h - master - githubmirror/nghttp2

src/shrpx_downstream_connection.h
90 строк3 KB
Tatsuhiro Tsujikawa
nghttpx: Fix build error with gcc-16
30 июн 2026, 13:35
30 июн 2026, 13:35775e7a7
/*
 * nghttp2 - HTTP/2 C Library
 *
 * Copyright (c) 2012 Tatsuhiro Tsujikawa
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#ifndef SHRPX_DOWNSTREAM_CONNECTION_H
#define SHRPX_DOWNSTREAM_CONNECTION_H

#include "shrpx.h"

#include <memory>
#include <span>
#include <expected>

#include "shrpx_io_control.h"
#include "errors.h"

using namespace nghttp2;

namespace shrpx {

class ClientHandler;
class Upstream;
class Downstream;
struct DownstreamAddrGroup;
struct DownstreamAddr;

class DownstreamConnection {
public:
  DownstreamConnection() noexcept = default;
  virtual ~DownstreamConnection();
  virtual std::expected<void, Error>
  attach_downstream(Downstream *downstream) = 0;
  virtual std::expected<void, Error>
  detach_downstream(Downstream *downstream) = 0;

  virtual std::expected<void, Error> push_request_headers() = 0;
  virtual std::expected<void, Error>
  push_upload_data_chunk(std::span<const uint8_t> data) = 0;
  virtual std::expected<void, Error> end_upload_data() = 0;

  virtual void pause_read(IOCtrlReason reason) = 0;
  virtual std::expected<void, Error> resume_read(IOCtrlReason reason,
                                                 size_t consumed) = 0;
  virtual void force_resume_read() = 0;

  virtual std::expected<void, Error> on_read() = 0;
  virtual std::expected<void, Error> on_write() = 0;
  virtual std::expected<void, Error> on_timeout() { return {}; }

  virtual void on_upstream_change(Upstream *upstream) = 0;

  // true if this object is poolable.
  virtual bool poolable() const = 0;

  virtual const std::shared_ptr<DownstreamAddrGroup> &
  get_downstream_addr_group() const = 0;
  virtual DownstreamAddr *get_addr() const = 0;

  void set_client_handler(ClientHandler *client_handler);
  ClientHandler *get_client_handler();
  Downstream *get_downstream();

protected:
  ClientHandler *client_handler_{};
  Downstream *downstream_{};
};

} // namespace shrpx

#endif // !defined(SHRPX_DOWNSTREAM_CONNECTION_H)