Project import generated by Copybara.
PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/core/qpack/offline/qpack_offline_decoder.h b/quic/core/qpack/offline/qpack_offline_decoder.h
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+// Copyright (c) 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef QUICHE_QUIC_CORE_QPACK_OFFLINE_QPACK_OFFLINE_DECODER_H_
+#define QUICHE_QUIC_CORE_QPACK_OFFLINE_QPACK_OFFLINE_DECODER_H_
+
+#include <list>
+
+#include "net/third_party/quiche/src/quic/core/qpack/qpack_decoder.h"
+#include "net/third_party/quiche/src/quic/core/qpack/qpack_decoder_test_utils.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
+#include "net/third_party/quiche/src/spdy/core/spdy_header_block.h"
+
+namespace quic {
+
+// A decoder to read encoded data from a file, decode it, and compare to
+// a list of expected header lists read from another file. File format is
+// described at
+// https://github.com/quicwg/base-drafts/wiki/QPACK-Offline-Interop.
+class QpackOfflineDecoder : public QpackDecoder::EncoderStreamErrorDelegate {
+ public:
+ QpackOfflineDecoder();
+ ~QpackOfflineDecoder() override = default;
+
+ // Read encoded header blocks and encoder stream data from |input_filename|
+ // and decode them, read expected header lists from
+ // |expected_headers_filename|, and compare decoded header lists to expected
+ // ones. Returns true if there is an equal number of them and the
+ // corresponding ones match, false otherwise.
+ bool DecodeAndVerifyOfflineData(QuicStringPiece input_filename,
+ QuicStringPiece expected_headers_filename);
+
+ // QpackDecoder::EncoderStreamErrorDelegate implementation:
+ void OnEncoderStreamError(QuicStringPiece error_message) override;
+
+ private:
+ // Parse decoder parameters from |input_filename| and set up |decoder_|
+ // accordingly.
+ bool ParseInputFilename(QuicStringPiece input_filename);
+
+ // Read encoded header blocks and encoder stream data from |input_filename|,
+ // pass them to |decoder_| for decoding, and add decoded header lists to
+ // |decoded_header_lists_|.
+ bool DecodeHeaderBlocksFromFile(QuicStringPiece input_filename);
+
+ // Read expected header lists from |expected_headers_filename| and verify
+ // decoded header lists in |decoded_header_lists_| against them.
+ bool VerifyDecodedHeaderLists(QuicStringPiece expected_headers_filename);
+
+ // Parse next header list from |*expected_headers_data| into
+ // |*expected_header_list|, removing consumed data from the beginning of
+ // |*expected_headers_data|. Returns true on success, false if parsing fails.
+ bool ReadNextExpectedHeaderList(QuicStringPiece* expected_headers_data,
+ spdy::SpdyHeaderBlock* expected_header_list);
+
+ // Compare two header lists. Allow for different orders of certain headers as
+ // described at
+ // https://github.com/qpackers/qifs/blob/master/encoded/qpack-03/h2o/README.md.
+ bool CompareHeaderBlocks(spdy::SpdyHeaderBlock decoded_header_list,
+ spdy::SpdyHeaderBlock expected_header_list);
+
+ bool encoder_stream_error_detected_;
+ test::NoopDecoderStreamSenderDelegate decoder_stream_sender_delegate_;
+ QpackDecoder decoder_;
+ std::list<spdy::SpdyHeaderBlock> decoded_header_lists_;
+};
+
+} // namespace quic
+
+#endif // QUICHE_QUIC_CORE_QPACK_OFFLINE_QPACK_OFFLINE_DECODER_H_
