151 lines
5.4 KiB
C++
151 lines
5.4 KiB
C++
/*
|
|
* 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_HTTP2_UPSTREAM_H
|
|
#define SHRPX_HTTP2_UPSTREAM_H
|
|
|
|
#include "shrpx.h"
|
|
|
|
#include <memory>
|
|
|
|
#include <ev.h>
|
|
|
|
#include <nghttp2/nghttp2.h>
|
|
|
|
#include "shrpx_upstream.h"
|
|
#include "shrpx_downstream_queue.h"
|
|
#include "memchunk.h"
|
|
#include "buffer.h"
|
|
|
|
using namespace nghttp2;
|
|
|
|
namespace shrpx {
|
|
|
|
class ClientHandler;
|
|
class HttpsUpstream;
|
|
|
|
class Http2Upstream : public Upstream {
|
|
public:
|
|
Http2Upstream(ClientHandler *handler);
|
|
virtual ~Http2Upstream();
|
|
virtual int on_read();
|
|
virtual int on_write();
|
|
virtual int on_timeout(Downstream *downstream);
|
|
virtual int on_downstream_abort_request(Downstream *downstream,
|
|
unsigned int status_code);
|
|
virtual int
|
|
on_downstream_abort_request_with_https_redirect(Downstream *downstream);
|
|
virtual ClientHandler *get_client_handler() const;
|
|
|
|
virtual int downstream_read(DownstreamConnection *dconn);
|
|
virtual int downstream_write(DownstreamConnection *dconn);
|
|
virtual int downstream_eof(DownstreamConnection *dconn);
|
|
virtual int downstream_error(DownstreamConnection *dconn, int events);
|
|
|
|
void add_pending_downstream(std::unique_ptr<Downstream> downstream);
|
|
void remove_downstream(Downstream *downstream);
|
|
|
|
int rst_stream(Downstream *downstream, uint32_t error_code);
|
|
int terminate_session(uint32_t error_code);
|
|
int error_reply(Downstream *downstream, unsigned int status_code);
|
|
|
|
virtual void pause_read(IOCtrlReason reason);
|
|
virtual int resume_read(IOCtrlReason reason, Downstream *downstream,
|
|
size_t consumed);
|
|
|
|
virtual int on_downstream_header_complete(Downstream *downstream);
|
|
virtual int on_downstream_body(Downstream *downstream, const uint8_t *data,
|
|
size_t len, bool flush);
|
|
virtual int on_downstream_body_complete(Downstream *downstream);
|
|
|
|
virtual void on_handler_delete();
|
|
virtual int on_downstream_reset(Downstream *downstream, bool no_retry);
|
|
virtual int send_reply(Downstream *downstream, const uint8_t *body,
|
|
size_t bodylen);
|
|
virtual int initiate_push(Downstream *downstream, const StringRef &uri);
|
|
virtual int response_riovec(struct iovec *iov, int iovcnt) const;
|
|
virtual void response_drain(size_t n);
|
|
virtual bool response_empty() const;
|
|
|
|
virtual Downstream *on_downstream_push_promise(Downstream *downstream,
|
|
int32_t promised_stream_id);
|
|
virtual int
|
|
on_downstream_push_promise_complete(Downstream *downstream,
|
|
Downstream *promised_downstream);
|
|
virtual bool push_enabled() const;
|
|
virtual void cancel_premature_downstream(Downstream *promised_downstream);
|
|
|
|
bool get_flow_control() const;
|
|
// Perform HTTP/2 upgrade from |upstream|. On success, this object
|
|
// takes ownership of the |upstream|. This function returns 0 if it
|
|
// succeeds, or -1.
|
|
int upgrade_upstream(HttpsUpstream *upstream);
|
|
void start_settings_timer();
|
|
void stop_settings_timer();
|
|
int consume(int32_t stream_id, size_t len);
|
|
void log_response_headers(Downstream *downstream,
|
|
const std::vector<nghttp2_nv> &nva) const;
|
|
void start_downstream(Downstream *downstream);
|
|
void initiate_downstream(Downstream *downstream);
|
|
|
|
void submit_goaway();
|
|
void check_shutdown();
|
|
// Starts graceful shutdown period.
|
|
void start_graceful_shutdown();
|
|
|
|
int prepare_push_promise(Downstream *downstream);
|
|
int submit_push_promise(const StringRef &scheme, const StringRef &authority,
|
|
const StringRef &path, Downstream *downstream);
|
|
|
|
// Called when new request has started.
|
|
void on_start_request(const nghttp2_frame *frame);
|
|
int on_request_headers(Downstream *downstream, const nghttp2_frame *frame);
|
|
|
|
DefaultMemchunks *get_response_buf();
|
|
|
|
size_t get_max_buffer_size() const;
|
|
|
|
int redirect_to_https(Downstream *downstream);
|
|
|
|
private:
|
|
DefaultMemchunks wb_;
|
|
std::unique_ptr<HttpsUpstream> pre_upstream_;
|
|
DownstreamQueue downstream_queue_;
|
|
ev_timer settings_timer_;
|
|
ev_timer shutdown_timer_;
|
|
ev_prepare prep_;
|
|
ClientHandler *handler_;
|
|
nghttp2_session *session_;
|
|
size_t max_buffer_size_;
|
|
// The number of requests seen so far.
|
|
size_t num_requests_;
|
|
bool flow_control_;
|
|
};
|
|
|
|
nghttp2_session_callbacks *create_http2_upstream_callbacks();
|
|
|
|
} // namespace shrpx
|
|
|
|
#endif // SHRPX_HTTP2_UPSTREAM_H
|