SPDY - Handle incomplete headers during server push.

net/http/http_network_transaction.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/http/http_network_transaction.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 902 matching lines @@
 
   bool keep_alive = false;
   if (stream_->IsResponseBodyComplete()) {
     // Note: Just because IsResponseBodyComplete is true, we're not
     // necessarily "done".  We're only "done" when it is the last
     // read on this HttpNetworkTransaction, which will be signified
     // by a zero-length read.
     // TODO(mbelshe): The keepalive property is really a property of
     //    the stream.  No need to compute it here just to pass back
     //    to the stream's Close function.
-    if (stream_->CanFindEndOfResponse())
-      keep_alive = GetResponseHeaders()->IsKeepAlive();
+    if (stream_->CanFindEndOfResponse()) {
+      HttpResponseHeaders* headers = GetResponseHeaders();
+      if (headers)
+        keep_alive = headers->IsKeepAlive();
+    }
   }
 
   // Clean up connection if we are done.
   if (done) {
     LogTransactionMetrics();
     stream_->LogNumRttVsBytesMetrics();
     stream_->Close(!keep_alive);
     // Note: we don't reset the stream here.  We've closed it, but we still
     // need it around so that callers can call methods such as
     // GetUploadProgress() and have them be meaningful.
@@ skipping 474 matching lines @@
       description = base::StringPrintf("Unknown state 0x%08X (%u)", state,
                                        state);
       break;
   }
   return description;
 }
 
 #undef STATE_CASE
 
 }  // namespace net