SPDY sends RST_STREAM upon cancelling request, or bad header parse data.

net/spdy/spdy_stream.cc

 // Copyright (c) 2010 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_stream.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/singleton.h"
 #include "net/spdy/spdy_session.h"
@@ skipping 35 matching lines @@
   std::vector<scoped_refptr<IOBufferWithSize> > buffers;
   buffers.swap(pending_buffers_);
   for (size_t i = 0; i < buffers.size(); ++i) {
     if (delegate_)
       delegate_->OnDataReceived(buffers[i]->data(), buffers[i]->size());
   }
 }
 
 void SpdyStream::DetachDelegate() {
   delegate_ = NULL;
-  if (!response_complete_ && !cancelled())
+  if (!response_complete_)
     Cancel();
 }
 
 const linked_ptr<spdy::SpdyHeaderBlock>& SpdyStream::spdy_headers() const {
   return request_;
 }
 
 void SpdyStream::set_spdy_headers(
     const linked_ptr<spdy::SpdyHeaderBlock>& headers) {
   request_ = headers;
@@ skipping 142 matching lines @@
 void SpdyStream::OnClose(int status) {
   response_complete_ = true;
   response_status_ = status;
   Delegate* delegate = delegate_;
   delegate_ = NULL;
   if (delegate)
     delegate->OnClose(status);
 }
 
 void SpdyStream::Cancel() {
+  if (cancelled())
+    return;
+
   cancelled_ = true;
-  session_->CloseStream(stream_id_, ERR_ABORTED);
+  if(session_->IsStreamActive(stream_id_))
+    session_->ResetStream(stream_id_, spdy::CANCEL);
 }
 
 int SpdyStream::DoSendRequest(bool has_upload_data) {
   CHECK(!cancelled_);
 
   if (!pushed_) {
     spdy::SpdyControlFlags flags = spdy::CONTROL_FLAG_NONE;
     if (!has_upload_data)
       flags = spdy::CONTROL_FLAG_FIN;
 
@@ skipping 211 matching lines @@
   UMA_HISTOGRAM_TIMES("Net.SpdyStreamDownloadTime",
       recv_last_byte_time_ - recv_first_byte_time_);
   UMA_HISTOGRAM_TIMES("Net.SpdyStreamTime",
       recv_last_byte_time_ - send_time_);
 
   UMA_HISTOGRAM_COUNTS("Net.SpdySendBytes", send_bytes_);
   UMA_HISTOGRAM_COUNTS("Net.SpdyRecvBytes", recv_bytes_);
 }
 
 }  // namespace net