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/*
* 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 "shrpx_io_control.h"
namespace shrpx {
class ClientHandler;
class Upstream;
class Downstream;
struct DownstreamAddrGroup;
struct DownstreamAddr;
class DownstreamConnection {
public:
DownstreamConnection();
virtual ~DownstreamConnection();
virtual int attach_downstream(Downstream *downstream) = 0;
virtual void detach_downstream(Downstream *downstream) = 0;
virtual int push_request_headers() = 0;
virtual int push_upload_data_chunk(const uint8_t *data, size_t datalen) = 0;
virtual int end_upload_data() = 0;
virtual void pause_read(IOCtrlReason reason) = 0;
virtual int resume_read(IOCtrlReason reason, size_t consumed) = 0;
virtual void force_resume_read() = 0;
virtual int on_read() = 0;
virtual int on_write() = 0;
virtual int on_timeout() { return 0; }
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 // SHRPX_DOWNSTREAM_CONNECTION_H
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