Send PING to check the status of the SPDY connection.

net/spdy/spdy_stream.h

 // 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.
 
 #ifndef NET_SPDY_SPDY_STREAM_H_
 #define NET_SPDY_SPDY_STREAM_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 191 matching lines @@
   void Close();
   bool cancelled() const { return cancelled_; }
   bool closed() const { return io_state_ == STATE_DONE; }
 
   // Interface for Spdy[Http|WebSocket]Stream to use.
 
   // Sends the request.
   // For non push stream, it will send SYN_STREAM frame.
   int SendRequest(bool has_upload_data);
 
+  // Sends PING frame.
+  int SendPing();
+
   // Sends DATA frame.
   int WriteStreamData(IOBuffer* data, int length,
                       spdy::SpdyDataFlags flags);
 
   // Fills SSL info in |ssl_info| and returns true when SSL is in use.
   bool GetSSLInfo(SSLInfo* ssl_info, bool* was_npn_negotiated);
 
   // Fills SSL Certificate Request info |cert_request_info| and returns
   // true when SSL is in use.
   bool GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info);
@@ skipping 100 matching lines @@
   int recv_bytes_;
   // Data received before delegate is attached.
   std::vector<scoped_refptr<IOBufferWithSize> > pending_buffers_;
 
   DISALLOW_COPY_AND_ASSIGN(SpdyStream);
 };
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_STREAM_H_