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Fix autodiscovery

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Shadowghost
2022-10-15 17:27:37 +02:00
parent 4aec41752f
commit 87d0158a4a
3 changed files with 67 additions and 33 deletions
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32
MediaBrowser.Common/Net/NetworkExtensions.cs
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@@ -56,7 +56,23 @@ namespace MediaBrowser.Common.Net
/// <returns>String value of the subnet mask in dotted decimal notation.</returns>
public static IPAddress CidrToMask(byte cidr, AddressFamily family)
{
uint addr = 0xFFFFFFFF << (family == AddressFamily.InterNetwork ? 32 : 128 - cidr);
uint addr = 0xFFFFFFFF << ((family == AddressFamily.InterNetwork ? 32 : 128) - cidr);
addr = ((addr & 0xff000000) >> 24)
| ((addr & 0x00ff0000) >> 8)
| ((addr & 0x0000ff00) << 8)
| ((addr & 0x000000ff) << 24);
return new IPAddress(addr);
}
/// <summary>
/// Convert a subnet mask in CIDR notation to a dotted decimal string value. IPv4 only.
/// </summary>
/// <param name="cidr">Subnet mask in CIDR notation.</param>
/// <param name="family">IPv4 or IPv6 family.</param>
/// <returns>String value of the subnet mask in dotted decimal notation.</returns>
public static IPAddress CidrToMask(int cidr, AddressFamily family)
{
uint addr = 0xFFFFFFFF << ((family == AddressFamily.InterNetwork ? 32 : 128) - cidr);
addr = ((addr & 0xff000000) >> 24)
| ((addr & 0x00ff0000) >> 8)
| ((addr & 0x0000ff00) << 8)
@@ -319,5 +335,19 @@ namespace MediaBrowser.Common.Net
addresses = Array.Empty<IPAddress>();
return false;
}
/// <summary>
/// Gets the broadcast address for a <see cref="IPNetwork"/>.
/// </summary>
/// <param name="network">The <see cref="IPNetwork"/>.</param>
/// <returns>The broadcast address.</returns>
public static IPAddress GetBroadcastAddress(IPNetwork network)
{
uint ipAddress = BitConverter.ToUInt32(network.Prefix.GetAddressBytes(), 0);
uint ipMaskV4 = BitConverter.ToUInt32(CidrToMask(network.PrefixLength, AddressFamily.InterNetwork).GetAddressBytes(), 0);
uint broadCastIpAddress = ipAddress | ~ipMaskV4;
return new IPAddress(BitConverter.GetBytes(broadCastIpAddress));
}
}
}