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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2015 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_RATE_LIMIT_H
#define SHRPX_RATE_LIMIT_H
#include "shrpx.h"
#include <ev.h>
#include <openssl/ssl.h>
namespace shrpx {
struct Connection;
class RateLimit {
public:
// We need |conn| object to check that it has unread bytes for TLS
// connection.
RateLimit(struct ev_loop *loop, ev_io *w, size_t rate, size_t burst,
Connection *conn = nullptr);
~RateLimit();
size_t avail() const;
void drain(size_t n);
void regen();
void startw();
void stopw();
// Feeds event if conn_->tls object has unread bytes. This is
// required since it is buffered in conn_->tls object, io event is
// not generated unless new incoming data is received.
void handle_tls_pending_read();
private:
ev_timer t_;
ev_io *w_;
struct ev_loop *loop_;
Connection *conn_;
size_t rate_;
size_t burst_;
size_t avail_;
bool startw_req_;
};
} // namespace shrpx
#endif // SHRPX_RATE_LIMIT_H
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