69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2015 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SHRPX_RATE_LIMIT_H
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#define SHRPX_RATE_LIMIT_H
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#include "shrpx.h"
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#include <ev.h>
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#include <openssl/ssl.h>
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namespace shrpx {
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struct Connection;
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class RateLimit {
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public:
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// We need |conn| object to check that it has unread bytes for TLS
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// connection.
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RateLimit(struct ev_loop *loop, ev_io *w, size_t rate, size_t burst,
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Connection *conn = nullptr);
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~RateLimit();
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size_t avail() const;
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void drain(size_t n);
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void regen();
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void startw();
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void stopw();
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// Feeds event if conn_->tls object has unread bytes. This is
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// required since it is buffered in conn_->tls object, io event is
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// not generated unless new incoming data is received.
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void handle_tls_pending_read();
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private:
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ev_timer t_;
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ev_io *w_;
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struct ev_loop *loop_;
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Connection *conn_;
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size_t rate_;
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size_t burst_;
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size_t avail_;
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bool startw_req_;
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};
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} // namespace shrpx
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#endif // SHRPX_RATE_LIMIT_H
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