2 * nghttp2 - HTTP/2 C Library
4 * Copyright (c) 2012 Tatsuhiro Tsujikawa
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:
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
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.
25 #ifndef SHRPX_HTTP2_UPSTREAM_H
26 #define SHRPX_HTTP2_UPSTREAM_H
34 #include <nghttp2/nghttp2.h>
36 #include "shrpx_upstream.h"
37 #include "shrpx_downstream_queue.h"
40 using namespace nghttp2;
47 class Http2Upstream : public Upstream {
49 Http2Upstream(ClientHandler *handler);
50 virtual ~Http2Upstream();
51 virtual int on_read();
52 virtual int on_write();
53 virtual int on_timeout(Downstream *downstream);
54 virtual int on_downstream_abort_request(Downstream *downstream,
55 unsigned int status_code);
56 virtual ClientHandler *get_client_handler() const;
58 virtual int downstream_read(DownstreamConnection *dconn);
59 virtual int downstream_write(DownstreamConnection *dconn);
60 virtual int downstream_eof(DownstreamConnection *dconn);
61 virtual int downstream_error(DownstreamConnection *dconn, int events);
63 void add_pending_downstream(std::unique_ptr<Downstream> downstream);
64 void remove_downstream(Downstream *downstream);
66 int rst_stream(Downstream *downstream, uint32_t error_code);
67 int terminate_session(uint32_t error_code);
68 int error_reply(Downstream *downstream, unsigned int status_code);
70 virtual void pause_read(IOCtrlReason reason);
71 virtual int resume_read(IOCtrlReason reason, Downstream *downstream,
74 virtual int on_downstream_header_complete(Downstream *downstream);
75 virtual int on_downstream_body(Downstream *downstream, const uint8_t *data,
76 size_t len, bool flush);
77 virtual int on_downstream_body_complete(Downstream *downstream);
79 virtual void on_handler_delete();
80 virtual int on_downstream_reset(bool no_retry);
82 bool get_flow_control() const;
83 // Perform HTTP/2 upgrade from |upstream|. On success, this object
84 // takes ownership of the |upstream|. This function returns 0 if it
86 int upgrade_upstream(HttpsUpstream *upstream);
87 void start_settings_timer();
88 void stop_settings_timer();
89 int consume(int32_t stream_id, size_t len);
90 void log_response_headers(Downstream *downstream,
91 const std::vector<nghttp2_nv> &nva) const;
92 void start_downstream(Downstream *downstream);
93 void initiate_downstream(Downstream *downstream);
96 void check_shutdown();
98 int prepare_push_promise(Downstream *downstream);
99 int submit_push_promise(const std::string &path, Downstream *downstream);
101 int on_request_headers(Downstream *downstream, const nghttp2_frame *frame);
104 std::unique_ptr<HttpsUpstream> pre_upstream_;
105 DownstreamQueue downstream_queue_;
106 ev_timer settings_timer_;
107 ev_timer shutdown_timer_;
109 ClientHandler *handler_;
110 nghttp2_session *session_;
111 const uint8_t *data_pending_;
112 size_t data_pendinglen_;
114 bool shutdown_handled_;
117 nghttp2_session_callbacks *create_http2_upstream_callbacks();
121 #endif // SHRPX_HTTP2_UPSTREAM_H