HTTP2 draft 13: support unknown frame types and settings types as extensions.

net/spdy/spdy_session.cc

 // 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.
 
 #include "net/spdy/spdy_session.h"
 
 #include <algorithm>
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 2303 matching lines @@
         headers, response_time, recv_first_byte_time, stream));
   } else {
     int rv = stream->OnAdditionalResponseHeadersReceived(headers);
     if (rv < 0) {
       DCHECK_NE(rv, ERR_IO_PENDING);
       DCHECK(active_streams_.find(stream_id) == active_streams_.end());
     }
   }
 }
 
+bool SpdySession::OnUnknownFrame(SpdyStreamId stream_id, int frame_type) {
+  // Validate stream id.
+  // Was the frame sent on a stream id that has not been used in this session?
+  if (stream_id % 2 == 1 && stream_id > stream_hi_water_mark_)
+    return false;
+  // TODO(bnc):  Track highest id for server initiated streams.
+  return true;
+}
+
 void SpdySession::OnRstStream(SpdyStreamId stream_id,
                               SpdyRstStreamStatus status) {
   CHECK(in_io_loop_);
 
   std::string description;
   net_log().AddEvent(
       NetLog::TYPE_SPDY_SESSION_RST_STREAM,
       base::Bind(&NetLogSpdyRstCallback,
                  stream_id, status, &description));
 
@@ skipping 830 matching lines @@
     if (!queue->empty()) {
       SpdyStreamId stream_id = queue->front();
       queue->pop_front();
       return stream_id;
     }
   }
   return 0;
 }
 
 }  // namespace net