mirror of https://github.com/Squidex/squidex.git
Sebastian
8 years ago
5 changed files with 12 additions and 142 deletions
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// ==========================================================================
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// Squidex Headless CMS
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// ==========================================================================
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// Copyright (c) Squidex UG (haftungsbeschraenkt)
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// All rights reserved. Licensed under the MIT license.
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// ==========================================================================
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Net; |
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using System.Net.NetworkInformation; |
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using System.Net.Sockets; |
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using System.Threading.Tasks; |
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using Orleans.Runtime; |
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namespace Squidex.Config.Orleans |
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{ |
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public static class ConfigUtilities |
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{ |
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public static IPAddress SiloAddress { get; } = GetBestIPAddressAsync().Result; |
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private static Task<IPAddress> GetBestIPAddressAsync() |
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{ |
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return ResolveIPAddressAsync(Dns.GetHostName(), null, AddressFamily.InterNetwork); |
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} |
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internal static async Task<IPAddress> ResolveIPAddressAsync(string addressOrHost, byte[] subnet, AddressFamily family) |
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{ |
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var loopback = family == AddressFamily.InterNetwork ? IPAddress.Loopback : IPAddress.IPv6Loopback; |
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IList<IPAddress> nodeIps; |
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if (string.IsNullOrEmpty(addressOrHost)) |
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{ |
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nodeIps = |
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NetworkInterface.GetAllNetworkInterfaces() |
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.SelectMany(i => i.GetIPProperties().UnicastAddresses) |
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.Select(a => a.Address) |
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.Where(a => a.AddressFamily == family && !IPAddress.IsLoopback(a)) |
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.ToList(); |
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} |
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else |
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{ |
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if (addressOrHost.Equals("loopback", StringComparison.OrdinalIgnoreCase)) |
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{ |
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return loopback; |
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} |
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if (IPAddress.TryParse(addressOrHost, out IPAddress address)) |
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{ |
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return address; |
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} |
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nodeIps = await Dns.GetHostAddressesAsync(addressOrHost); |
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} |
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var candidates = new List<IPAddress>(); |
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foreach (var nodeIp in nodeIps.Where(x => x.AddressFamily == family)) |
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{ |
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if (subnet == null) |
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{ |
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candidates.Add(nodeIp); |
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} |
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else |
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{ |
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var ip = nodeIp; |
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if (subnet.Select((b, i) => ip.GetAddressBytes()[i] == b).All(x => x)) |
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{ |
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candidates.Add(nodeIp); |
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} |
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} |
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} |
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if (candidates.Count > 0) |
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{ |
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return PickIPAddress(candidates); |
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} |
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var subnetStr = Utils.EnumerableToString(subnet, null, ".", false); |
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throw new ArgumentException($"Hostname '{addressOrHost}' with subnet {subnetStr} and family {family} is not a valid IP address or DNS name"); |
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} |
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internal static IPAddress PickIPAddress(IReadOnlyList<IPAddress> candidates) |
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{ |
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IPAddress result = null; |
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foreach (IPAddress address in candidates) |
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{ |
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if (result == null) |
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{ |
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result = address; |
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} |
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else |
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{ |
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if (CompareIPAddresses(address, result)) |
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{ |
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result = address; |
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} |
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} |
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} |
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return result; |
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} |
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private static bool CompareIPAddresses(IPAddress lhs, IPAddress rhs) |
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{ |
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var lbytes = lhs.GetAddressBytes(); |
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var rbytes = rhs.GetAddressBytes(); |
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if (lbytes.Length != rbytes.Length) |
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{ |
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return lbytes.Length < rbytes.Length; |
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} |
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for (int i = 0; i < lbytes.Length; i++) |
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{ |
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if (lbytes[i] != rbytes[i]) |
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{ |
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return lbytes[i] < rbytes[i]; |
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} |
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} |
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return false; |
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} |
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} |
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} |
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