Allow SPDY POSTs to be terminated by an empty FIN data frame.

net/spdy/spdy_http_stream.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_http_stream.h"
 
 #include <algorithm>
 #include <list>
 
 #include "base/bind.h"
@@ skipping 406 matching lines @@
     // ERR_IO_PENDING is the only possible error.
     CHECK_GE(rv, 0);
     OnRequestBodyReadCompleted(rv);
   }
 }
 
 void SpdyHttpStream::OnRequestBodyReadCompleted(int status) {
   CHECK_GE(status, 0);
   request_body_buf_size_ = status;
   const bool eof = request_info_->upload_data_stream->IsEOF();
+  // Only the final fame may have a length of 0.
   if (eof) {
     CHECK_GE(request_body_buf_size_, 0);
   } else {
     CHECK_GT(request_body_buf_size_, 0);
   }
   stream_->SendData(request_body_buf_.get(),
                     request_body_buf_size_,
                     eof ? NO_MORE_DATA_TO_SEND : MORE_DATA_TO_SEND);
 }
 
@@ skipping 91 matching lines @@
   Close(false);
   delete this;
 }
 
 void SpdyHttpStream::SetPriority(RequestPriority priority) {
   // TODO(akalin): Plumb this through to |stream_request_| and
   // |stream_|.
 }
 
 }  // namespace net