Adds QUIC_VERSION_24 which uses SPDY/4 header compression instead of SPDY/3.

net/quic/quic_headers_stream.cc

 // Copyright 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.
 
 #include "net/quic/quic_headers_stream.h"
 
 #include "base/strings/stringprintf.h"
 #include "net/quic/quic_session.h"
 
 using base::StringPiece;
 using std::string;
 
 namespace net {
 
 namespace {
 
 const QuicStreamId kInvalidStreamId = 0;
 
 }  // namespace
 
 // A SpdyFramer visitor which passed SYN_STREAM and SYN_REPLY frames to
 // the QuicDataStream, and closes the connection if any unexpected frames
 // are received.
 class QuicHeadersStream::SpdyFramerVisitor
     : public SpdyFramerVisitorInterface,
       public SpdyFramerDebugVisitorInterface {
  public:
-  explicit SpdyFramerVisitor(QuicHeadersStream* stream) : stream_(stream) {}
+  SpdyFramerVisitor(SpdyMajorVersion spdy_version, QuicHeadersStream* stream)
+      : spdy_version_(spdy_version), stream_(stream) {}
 
   // SpdyFramerVisitorInterface implementation
   void OnSynStream(SpdyStreamId stream_id,
                    SpdyStreamId associated_stream_id,
                    SpdyPriority priority,
                    bool fin,
                    bool unidirectional) override {
+    if (spdy_version_ != SPDY3) {
+      CloseConnection("SPDY SYN_STREAM frame received.");
+      return;
+    }
+
     if (!stream_->IsConnected()) {
       return;
     }
 
     if (associated_stream_id != 0) {
       CloseConnection("associated_stream_id != 0");
       return;
     }
 
     if (unidirectional != 0) {
       CloseConnection("unidirectional != 0");
       return;
     }
 
     stream_->OnSynStream(stream_id, priority, fin);
   }
 
   void OnSynReply(SpdyStreamId stream_id, bool fin) override {
+    if (spdy_version_ != SPDY3) {
+      CloseConnection("SPDY SYN_REPLY frame received.");
+      return;
+    }
+
     if (!stream_->IsConnected()) {
       return;
     }
 
     stream_->OnSynReply(stream_id, fin);
   }
 
   bool OnControlFrameHeaderData(SpdyStreamId stream_id,
                                 const char* header_data,
                                 size_t len) override {
@@ skipping 53 matching lines @@
   void OnGoAway(SpdyStreamId last_accepted_stream_id,
                 SpdyGoAwayStatus status) override {
     CloseConnection("SPDY GOAWAY frame received.");
   }
 
   void OnHeaders(SpdyStreamId stream_id,
                  bool has_priority,
                  SpdyPriority priority,
                  bool fin,
                  bool end) override {
-    CloseConnection("SPDY HEADERS frame received.");
+    if (spdy_version_ == SPDY3) {
+      CloseConnection("SPDY HEADERS frame received.");
+      return;
+    }
+    if (!stream_->IsConnected()) {
+      return;
+    }
+    if (has_priority) {
+      stream_->OnSynStream(stream_id, priority, fin);
+    } else {
+      stream_->OnSynReply(stream_id, fin);
+    }
   }
 
   void OnWindowUpdate(SpdyStreamId stream_id,
                       uint32 delta_window_size) override {
     CloseConnection("SPDY WINDOW_UPDATE frame received.");
   }
 
   void OnPushPromise(SpdyStreamId stream_id,
                      SpdyStreamId promised_stream_id,
                      bool end) override {
     LOG(DFATAL) << "PUSH_PROMISE frame received from a SPDY/3 framer";
     CloseConnection("SPDY PUSH_PROMISE frame received.");
   }
 
   void OnContinuation(SpdyStreamId stream_id, bool end) override {
-    CloseConnection("SPDY CONTINUATION frame received.");
+    if (spdy_version_ == SPDY3) {
+      CloseConnection("SPDY CONTINUATION frame received.");
+    }
   }
 
   bool OnUnknownFrame(SpdyStreamId stream_id, int frame_type) override {
     CloseConnection("Unknown frame type received.");
     return false;
   }
 
   // SpdyFramerDebugVisitorInterface implementation
   void OnSendCompressedFrame(SpdyStreamId stream_id,
                              SpdyFrameType type,
@@ skipping 10 matching lines @@
 
  private:
   void CloseConnection(const string& details) {
     if (stream_->IsConnected()) {
       stream_->CloseConnectionWithDetails(
           QUIC_INVALID_HEADERS_STREAM_DATA, details);
     }
   }
 
  private:
+  SpdyMajorVersion spdy_version_;
   QuicHeadersStream* stream_;
 
   DISALLOW_COPY_AND_ASSIGN(SpdyFramerVisitor);
 };
 
 QuicHeadersStream::QuicHeadersStream(QuicSession* session)
     : ReliableQuicStream(kHeadersStreamId, session),
       stream_id_(kInvalidStreamId),
       fin_(false),
-      frame_len_(0),
-      spdy_framer_(SPDY3),
-      spdy_framer_visitor_(new SpdyFramerVisitor(this)) {
-  spdy_framer_.set_visitor(spdy_framer_visitor_.get());
-  spdy_framer_.set_debug_visitor(spdy_framer_visitor_.get());
+      frame_len_(0) {
+  InitializeFramer(session->connection()->version());
   // The headers stream is exempt from connection level flow control.
   DisableConnectionFlowControlForThisStream();
 }
 
 QuicHeadersStream::~QuicHeadersStream() {}
 
 size_t QuicHeadersStream::WriteHeaders(
     QuicStreamId stream_id,
     const SpdyHeaderBlock& headers,
     bool fin,
     QuicAckNotifier::DelegateInterface* ack_notifier_delegate) {
   scoped_ptr<SpdySerializedFrame> frame;
-  if (session()->is_server()) {
-    SpdySynReplyIR syn_reply(stream_id);
-    syn_reply.set_name_value_block(headers);
-    syn_reply.set_fin(fin);
-    frame.reset(spdy_framer_.SerializeFrame(syn_reply));
+  if (spdy_framer_->protocol_version() == SPDY3) {
+    if (session()->is_server()) {
+      SpdySynReplyIR syn_reply(stream_id);
+      syn_reply.set_name_value_block(headers);
+      syn_reply.set_fin(fin);
+      frame.reset(spdy_framer_->SerializeFrame(syn_reply));
+    } else {
+      SpdySynStreamIR syn_stream(stream_id);
+      syn_stream.set_name_value_block(headers);
+      syn_stream.set_fin(fin);
+      frame.reset(spdy_framer_->SerializeFrame(syn_stream));
+    }
   } else {
-    SpdySynStreamIR syn_stream(stream_id);
-    syn_stream.set_name_value_block(headers);
-    syn_stream.set_fin(fin);
-    frame.reset(spdy_framer_.SerializeFrame(syn_stream));
+    SpdyHeadersIR headers_frame(stream_id);
+    headers_frame.set_name_value_block(headers);
+    headers_frame.set_fin(fin);
+    if (!session()->is_server()) {
+      headers_frame.set_has_priority(true);
+    }
+    frame.reset(spdy_framer_->SerializeFrame(headers_frame));
   }
   WriteOrBufferData(StringPiece(frame->data(), frame->size()), false,
                     ack_notifier_delegate);
   return frame->size();
 }
 
 uint32 QuicHeadersStream::ProcessRawData(const char* data,
                                          uint32 data_len) {
-  return spdy_framer_.ProcessInput(data, data_len);
+  return spdy_framer_->ProcessInput(data, data_len);
 }
 
 QuicPriority QuicHeadersStream::EffectivePriority() const { return 0; }
 
+void QuicHeadersStream::OnSuccessfulVersionNegotiation(QuicVersion version) {
+  InitializeFramer(version);
+}
+
+void QuicHeadersStream::InitializeFramer(QuicVersion version) {
+  SpdyMajorVersion spdy_version = version > QUIC_VERSION_23 ? SPDY4 : SPDY3;
+  if (spdy_framer_.get() != nullptr &&
+      spdy_framer_->protocol_version() == spdy_version) {
+    return;
+  }
+  spdy_framer_.reset(new SpdyFramer(spdy_version));
+  spdy_framer_visitor_.reset(new SpdyFramerVisitor(spdy_version, this));
+  spdy_framer_->set_visitor(spdy_framer_visitor_.get());
+  spdy_framer_->set_debug_visitor(spdy_framer_visitor_.get());
+}
+
 void QuicHeadersStream::OnSynStream(SpdyStreamId stream_id,
                                     SpdyPriority priority,
                                     bool fin) {
   if (!session()->is_server()) {
     CloseConnectionWithDetails(
         QUIC_INVALID_HEADERS_STREAM_DATA,
         "SPDY SYN_STREAM frame received at the client");
     return;
   }
   DCHECK_EQ(kInvalidStreamId, stream_id_);
@@ skipping 25 matching lines @@
     // Reset state for the next frame.
     stream_id_ = kInvalidStreamId;
     fin_ = false;
     frame_len_ = 0;
   } else {
     session()->OnStreamHeaders(stream_id_, StringPiece(header_data, len));
   }
 }
 
 void QuicHeadersStream::OnCompressedFrameSize(size_t frame_len) {
-  DCHECK_EQ(kInvalidStreamId, stream_id_);
-  DCHECK_EQ(0u, frame_len_);
-  frame_len_ = frame_len;
+  // DCHECK_EQ(kInvalidStreamId, stream_id_);
+  // DCHECK_EQ(0u, frame_len_);
+  frame_len_ += frame_len;
 }
 
 bool QuicHeadersStream::IsConnected() {
   return session()->connection()->connected();
 }
 
 }  // namespace net