Killing off QUICv12, including cleaning out all of the code for handling

net/quic/quic_session.h

 // Copyright (c) 2012 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.
 //
 // A QuicSession, which demuxes a single connection to individual streams.
 
 #ifndef NET_QUIC_QUIC_SESSION_H_
 #define NET_QUIC_QUIC_SESSION_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/containers/hash_tables.h"
 #include "net/base/ip_endpoint.h"
 #include "net/base/linked_hash_map.h"
 #include "net/quic/quic_connection.h"
 #include "net/quic/quic_crypto_stream.h"
 #include "net/quic/quic_data_stream.h"
 #include "net/quic/quic_headers_stream.h"
 #include "net/quic/quic_packet_creator.h"
 #include "net/quic/quic_protocol.h"
-#include "net/quic/quic_spdy_compressor.h"
-#include "net/quic/quic_spdy_decompressor.h"
 #include "net/quic/quic_write_blocked_list.h"
 #include "net/quic/reliable_quic_stream.h"
 
 namespace net {
 
 class QuicCryptoStream;
 class ReliableQuicStream;
 class SSLInfo;
 class VisitorShim;
 
@@ skipping 142 matching lines @@
   // Returns the number of currently open streams, including those which have
   // been implicitly created.
   virtual size_t GetNumOpenStreams() const;
 
   void MarkWriteBlocked(QuicStreamId id, QuicPriority priority);
 
   // Returns true if the session has data to be sent, either queued in the
   // connection, or in a write-blocked stream.
   bool HasDataToWrite() const;
 
-  // Marks that |stream_id| is blocked waiting to decompress the
-  // headers identified by |decompression_id|.
-  void MarkDecompressionBlocked(QuicHeaderId decompression_id,
-                                QuicStreamId stream_id);
-
   bool goaway_received() const {
     return goaway_received_;
   }
 
   bool goaway_sent() const {
     return goaway_sent_;
   }
 
-  QuicSpdyDecompressor* decompressor() { return &decompressor_; }
-  QuicSpdyCompressor* compressor() { return &compressor_; }
-
   // Gets the SSL connection information.
   virtual bool GetSSLInfo(SSLInfo* ssl_info);
 
   QuicErrorCode error() const { return error_; }
 
   bool is_server() const { return connection_->is_server(); }
 
  protected:
   typedef base::hash_map<QuicStreamId, QuicDataStream*> DataStreamMap;
 
@@ skipping 39 matching lines @@
 
   size_t get_max_open_streams() const {
     return max_open_streams_;
   }
 
  private:
   friend class test::QuicSessionPeer;
   friend class VisitorShim;
 
   // Performs the work required to close |stream_id|.  If |locally_reset|
-  // then the stream has been reset by this endpoint, not by the peer.  This
-  // means the stream may become a zombie stream which needs to stay
-  // around until headers have been decompressed.
+  // then the stream has been reset by this endpoint, not by the peer.
   void CloseStreamInner(QuicStreamId stream_id, bool locally_reset);
 
-  // Adds |stream_id| to the zobmie stream map, closing the oldest
-  // zombie stream if the set is full.
-  void AddZombieStream(QuicStreamId stream_id);
-
-  // Closes the zombie stream |stream_id| and removes it from the zombie
-  // stream map.
-  void CloseZombieStream(QuicStreamId stream_id);
-
-  // Adds |stream_id| to the prematurely closed stream map, removing the
-  // oldest prematurely closed stream if the set is full.
-  void AddPrematurelyClosedStream(QuicStreamId stream_id);
-
   scoped_ptr<QuicConnection> connection_;
 
   scoped_ptr<QuicHeadersStream> headers_stream_;
 
-  // Tracks the last 20 streams which closed without decompressing headers.
-  // This is for best-effort detection of an unrecoverable compression context.
-  // Ideally this would be a linked_hash_set as the boolean is unused.
-  linked_hash_map<QuicStreamId, bool> prematurely_closed_streams_;
-
-  // Streams which have been locally reset before decompressing headers
-  // from the peer.  These streams need to stay open long enough to
-  // process any headers from the peer.
-  // Ideally this would be a linked_hash_set as the boolean is unused.
-  linked_hash_map<QuicStreamId, bool> zombie_streams_;
-
   // A shim to stand between the connection and the session, to handle stream
   // deletions.
   scoped_ptr<VisitorShim> visitor_shim_;
 
   std::vector<QuicDataStream*> closed_streams_;
 
-  QuicSpdyDecompressor decompressor_;
-  QuicSpdyCompressor compressor_;
-
   QuicConfig config_;
 
   // Returns the maximum number of streams this connection can open.
   size_t max_open_streams_;
 
   // Map from StreamId to pointers to streams that are owned by the caller.
   DataStreamMap stream_map_;
   QuicStreamId next_stream_id_;
 
   // Set of stream ids that have been "implicitly created" by receipt
   // of a stream id larger than the next expected stream id.
   base::hash_set<QuicStreamId> implicitly_created_streams_;
 
   // A list of streams which need to write more data.
   QuicWriteBlockedList write_blocked_streams_;
 
-  // A map of headers waiting to be compressed, and the streams
-  // they are associated with.
-  map<uint32, QuicStreamId> decompression_blocked_streams_;
-
   QuicStreamId largest_peer_created_stream_id_;
 
   // The latched error with which the connection was closed.
   QuicErrorCode error_;
 
   // Whether a GoAway has been received.
   bool goaway_received_;
   // Whether a GoAway has been sent.
   bool goaway_sent_;
 
   // Indicate if there is pending data for the crypto stream.
   bool has_pending_handshake_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSession);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_SESSION_H_