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/*
* nghttp3
*
* Copyright (c) 2019 nghttp3 contributors
*
* 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 QPACK_DECODE_H
#define QPACK_DECODE_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <nghttp3/nghttp3.h>
#include <vector>
#include <queue>
#include <functional>
#include <utility>
#include <memory>
#include <string>
namespace nghttp3 {
struct Request {
Request(int64_t stream_id, const nghttp3_buf *buf);
~Request();
nghttp3_buf buf;
nghttp3_qpack_stream_context *sctx;
int64_t stream_id;
};
} // namespace nghttp3
namespace std {
template <> struct greater<std::shared_ptr<nghttp3::Request>> {
bool operator()(const std::shared_ptr<nghttp3::Request> &lhs,
const std::shared_ptr<nghttp3::Request> &rhs) const {
return nghttp3_qpack_stream_context_get_ricnt(lhs->sctx) >
nghttp3_qpack_stream_context_get_ricnt(rhs->sctx);
}
};
} // namespace std
namespace nghttp3 {
using Headers = std::vector<std::pair<std::string, std::string>>;
class Decoder {
public:
Decoder(size_t max_dtable_size, size_t max_blocked);
~Decoder();
int init();
int read_encoder(nghttp3_buf *buf);
std::tuple<Headers, int> read_request(nghttp3_buf *buf, int64_t stream_id);
std::tuple<Headers, int> read_request(Request &req);
std::tuple<int64_t, Headers, int> process_blocked();
size_t get_num_blocked() const;
private:
const nghttp3_mem *mem_;
nghttp3_qpack_decoder *dec_;
std::priority_queue<std::shared_ptr<Request>,
std::vector<std::shared_ptr<Request>>,
std::greater<std::shared_ptr<Request>>>
blocked_reqs_;
size_t max_dtable_size_;
size_t max_blocked_;
};
int decode(const std::string_view &outfile, const std::string_view &infile);
} // namespace nghttp3
#endif // QPACK_ENCODE_H
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