Adding XMPP ping functionality to CLoudPrint. XMPP ping and timeout is controlled thorugh Service S…

chrome/service/cloud_print/cloud_print_consts.h

 // 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.
 
 #ifndef CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_CONSTS_H_
 #define CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_CONSTS_H_
 
 #include "base/basictypes.h"
 
 // Constant defines used in the cloud print proxy code
@@ skipping 46 matching lines @@
 // Max retry count (infinity) for Registration requests.
 const int kCloudPrintRegisterMaxRetryCount = -1;
 // Max retry count (infinity) for authentication requests.
 const int kCloudPrintAuthMaxRetryCount = -1;
 
 // When we don't have XMPP notifications available, we resort to polling for
 // print jobs. We choose a random interval in seconds between these 2 values.
 const int kMinJobPollIntervalSecs = 5*60;  // 5 minutes in seconds
 const int kMaxJobPollIntervalSecs = 8*60;  // 8 minutes in seconds
 
+// When we have XMPP notifications available, we ping server to keep connection
+// alive or check connection status.
+const int kDefaultXmppPingTimeoutSecs = 5*60;  // 5 minutes in seconds
+const int kMinimumXmppPingTimeoutSecs = 2*60;  // 2 minutes in seconds
+const int kXmppPingCheckIntervalSecs = 60;
+
+// Number of failed pings before we try to reinstablish XMPP connection.
+const int kMaxFailedXmppPings = 2;
+
 // The number of seconds before the OAuth2 access token is due to expire that
 // we try and refresh it.
 const int kTokenRefreshGracePeriodSecs = 5*60;  // 5 minutes in seconds
 
 #endif  // CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_CONSTS_H_