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@@ -26,6 +26,46 @@ namespace MediaBrowser.Common.Implementations.Networking
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return GetLocalIpAddressesFallback();
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}
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+ public bool IsInLocalNetwork(string endpoint)
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+ {
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+ if (string.IsNullOrWhiteSpace(endpoint))
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+ {
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+ throw new ArgumentNullException("endpoint");
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+ }
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+
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+ IPAddress address;
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+ if (!IPAddress.TryParse(endpoint, out address))
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+ {
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+ return true;
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+ }
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+
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+ const int lengthMatch = 4;
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+
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+ if (endpoint.Length >= lengthMatch)
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+ {
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+ var prefix = endpoint.Substring(0, lengthMatch);
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+
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+ if (GetLocalIpAddresses()
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+ .Any(i => i.StartsWith(prefix, StringComparison.OrdinalIgnoreCase)))
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+ {
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+ return true;
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+ }
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+ }
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+
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+ // Private address space:
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+ // http://en.wikipedia.org/wiki/Private_network
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+
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+ return
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+
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+ // If url was requested with computer name, we may see this
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+ endpoint.IndexOf("::", StringComparison.OrdinalIgnoreCase) != -1 ||
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+
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+ endpoint.StartsWith("10.", StringComparison.OrdinalIgnoreCase) ||
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+ endpoint.StartsWith("192.", StringComparison.OrdinalIgnoreCase) ||
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+ endpoint.StartsWith("172.", StringComparison.OrdinalIgnoreCase) ||
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+ endpoint.StartsWith("169.", StringComparison.OrdinalIgnoreCase);
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+ }
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+
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private IEnumerable<IPAddress> GetIPsDefault()
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{
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foreach (var adapter in NetworkInterface.GetAllNetworkInterfaces())
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