Send PING to check the status of the SPDY connection.

net/spdy/spdy_stream.cc

 // Copyright (c) 2011 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/values.h"
 #include "net/spdy/spdy_session.h"
@@ skipping 386 matching lines @@
     send_time_ = base::TimeTicks::Now();
     DCHECK(!has_upload_data_);
     DCHECK(response_received());
     return ERR_IO_PENDING;
   }
   CHECK_EQ(STATE_NONE, io_state_);
   io_state_ = STATE_SEND_HEADERS;
   return DoLoop(OK);
 }
 
+int SpdyStream::SendPing() {
+  return session_->WritePingFrame(stream_id_);
+}
+
 int SpdyStream::WriteStreamData(IOBuffer* data, int length,
                                 spdy::SpdyDataFlags flags) {
   return session_->WriteStreamData(stream_id_, data, length, flags);
 }
 
 bool SpdyStream::GetSSLInfo(SSLInfo* ssl_info, bool* was_npn_negotiated) {
   return session_->GetSSLInfo(ssl_info, was_npn_negotiated);
 }
 
 bool SpdyStream::GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) {
@@ skipping 181 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