Initial Commit: libicnet

Change-Id: I10a72cb0d84b76553a85c168416b847f6a4ff5f6
Signed-off-by: Mauro Sardara <msardara+fdio@cisco.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/icnet/transport/icnet_transport_vegas_rto_estimator.h b/icnet/transport/icnet_transport_vegas_rto_estimator.h
new file mode 100644
index 00000000..7b18533c
--- /dev/null
+++ b/icnet/transport/icnet_transport_vegas_rto_estimator.h
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+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ICNET_VEGAS_TRANSPORT_PROTOCOL_RTT_ESTIMATOR_H_
+#define ICNET_VEGAS_TRANSPORT_PROTOCOL_RTT_ESTIMATOR_H_
+
+#include "icnet_common.h"
+
+// Implementation inspired from RFC6298 (https://tools.ietf.org/search/rfc6298#ref-JK88)
+
+namespace icnet {
+
+class RtoEstimator {
+ public:
+  typedef std::chrono::microseconds Duration;
+
+  static Duration getInitialRtt() {
+    return std::chrono::seconds(1);
+  }
+
+  RtoEstimator(Duration min_rto = std::chrono::seconds(1));
+
+  void addMeasurement(Duration measure);
+
+  Duration computeRto() const;
+
+ private:
+  double smoothed_rtt_;
+  double rtt_variation_;
+  bool first_measurement_;
+  double last_rto_;
+};
+
+} // end namespace icnet
+
+
+#endif // ICNET_VEGAS_TRANSPORT_PROTOCOL_RTT_ESTIMATOR_H_