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ixwebsocket/IXExponentialBackoff.cpp

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+/*
+ *  IXExponentialBackoff.cpp
+ *  Author: Benjamin Sergeant
+ *  Copyright (c) 2017-2019 Machine Zone, Inc. All rights reserved.
+ */
+
+#include "IXExponentialBackoff.h"
+
+#include <cmath>
+
+namespace ix
+{
+uint32_t
+    calculateRetryWaitMilliseconds(uint32_t retryCount,
+                                   uint32_t maxWaitBetweenReconnectionRetries,
+                                   uint32_t minWaitBetweenReconnectionRetries)
+{
+    uint32_t waitTime = (retryCount < 26) ? (std::pow(2, retryCount) * 100) : 0;
+
+    if (waitTime < minWaitBetweenReconnectionRetries) {
+        waitTime = minWaitBetweenReconnectionRetries;
+    }
+
+    if (waitTime > maxWaitBetweenReconnectionRetries || waitTime == 0) {
+        waitTime = maxWaitBetweenReconnectionRetries;
+    }
+
+    return waitTime;
+}
+} // namespace ix