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Diffstat (limited to 'net/quic/quic_spdy_decompressor.h')
-rw-r--r-- | net/quic/quic_spdy_decompressor.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/net/quic/quic_spdy_decompressor.h b/net/quic/quic_spdy_decompressor.h new file mode 100644 index 0000000..3fd50783 --- /dev/null +++ b/net/quic/quic_spdy_decompressor.h @@ -0,0 +1,64 @@ +// Copyright (c) 2013 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 NET_QUIC_QUIC_SPDY_DECOMPRESSOR_H_ +#define NET_QUIC_QUIC_SPDY_DECOMPRESSOR_H_ + +#include <string> + +#include "base/basictypes.h" +#include "base/memory/scoped_ptr.h" +#include "base/strings/string_piece.h" +#include "net/base/net_export.h" +#include "net/quic/quic_protocol.h" +#include "net/spdy/spdy_framer.h" + +namespace net { + +class SpdyFramerVisitor; + +// Handles the compression of request/response headers blocks. +class NET_EXPORT_PRIVATE QuicSpdyDecompressor { + public: + // Interface that receives callbacks with decompressed data as it + // becomes available. + class NET_EXPORT_PRIVATE Visitor { + public: + virtual ~Visitor() {} + virtual bool OnDecompressedData(base::StringPiece data) = 0; + }; + + QuicSpdyDecompressor(); + ~QuicSpdyDecompressor(); + + // Decompresses the data in |data| and invokes |OnDecompressedData|, + // possibly multiple times, on |visitor|. Returns number of bytes + // consumed from |data|. + size_t DecompressData(base::StringPiece data, Visitor* visitor); + + QuicHeaderId current_header_id() { return current_header_id_; } + + private: + void ResetForNextHeaders(); + + SpdyFramer spdy_framer_; + scoped_ptr<SpdyFramerVisitor> spdy_visitor_; + // ID of the header currently being parsed. + QuicHeaderId current_header_id_; + // True when the size of the headers has been parsed. + bool has_current_compressed_size_; + // Size of the headers being parsed. + uint32 current_compressed_size_; + // Buffer into which the partial compressed size is written until + // it is fully parsed. + std::string compressed_size_buffer_; + // Number of compressed bytes consumed, out of the total in + // |current_compressed_size_|. + uint32 compressed_bytes_consumed_; + DISALLOW_COPY_AND_ASSIGN(QuicSpdyDecompressor); +}; + +} // namespace net + +#endif // NET_QUIC_QUIC_SPDY_DECOMPRESSOR_H_ |