1 /* 2 * nghttp2 - HTTP/2 C Library 3 * 4 * Copyright (c) 2012 Tatsuhiro Tsujikawa 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining 7 * a copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sublicense, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be 15 * included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 */ 25 #ifndef SHRPX_DOWNSTREAM_CONNECTION_H 26 #define SHRPX_DOWNSTREAM_CONNECTION_H 27 28 #include "shrpx.h" 29 30 #include <memory> 31 32 #include "shrpx_io_control.h" 33 34 namespace shrpx { 35 36 class ClientHandler; 37 class Upstream; 38 class Downstream; 39 struct DownstreamAddrGroup; 40 struct DownstreamAddr; 41 42 class DownstreamConnection { 43 public: 44 DownstreamConnection(); 45 virtual ~DownstreamConnection(); 46 virtual int attach_downstream(Downstream *downstream) = 0; 47 virtual void detach_downstream(Downstream *downstream) = 0; 48 49 virtual int push_request_headers() = 0; 50 virtual int push_upload_data_chunk(const uint8_t *data, size_t datalen) = 0; 51 virtual int end_upload_data() = 0; 52 53 virtual void pause_read(IOCtrlReason reason) = 0; 54 virtual int resume_read(IOCtrlReason reason, size_t consumed) = 0; 55 virtual void force_resume_read() = 0; 56 57 virtual int on_read() = 0; 58 virtual int on_write() = 0; on_timeout()59 virtual int on_timeout() { return 0; } 60 61 virtual void on_upstream_change(Upstream *uptream) = 0; 62 63 // true if this object is poolable. 64 virtual bool poolable() const = 0; 65 66 virtual const std::shared_ptr<DownstreamAddrGroup> & 67 get_downstream_addr_group() const = 0; 68 virtual DownstreamAddr *get_addr() const = 0; 69 70 void set_client_handler(ClientHandler *client_handler); 71 ClientHandler *get_client_handler(); 72 Downstream *get_downstream(); 73 74 protected: 75 ClientHandler *client_handler_; 76 Downstream *downstream_; 77 }; 78 79 } // namespace shrpx 80 81 #endif // SHRPX_DOWNSTREAM_CONNECTION_H 82