| | | 1 | | // Licensed to the .NET Foundation under one or more agreements. |
| | | 2 | | // The .NET Foundation licenses this file to you under the MIT license. |
| | | 3 | | |
| | | 4 | | using System.Diagnostics; |
| | | 5 | | using System.Net; |
| | | 6 | | |
| | | 7 | | namespace System.Net.Sockets |
| | | 8 | | { |
| | | 9 | | internal static partial class IPEndPointExtensions |
| | | 10 | | { |
| | | 11 | | public static unsafe IPAddress GetIPAddress(ReadOnlySpan<byte> socketAddressBuffer) |
| | 0 | 12 | | { |
| | 0 | 13 | | AddressFamily family = SocketAddressPal.GetAddressFamily(socketAddressBuffer); |
| | | 14 | | |
| | 0 | 15 | | if (family == AddressFamily.InterNetworkV6) |
| | 0 | 16 | | { |
| | 0 | 17 | | Span<byte> address = stackalloc byte[IPAddressParserStatics.IPv6AddressBytes]; |
| | | 18 | | uint scope; |
| | 0 | 19 | | SocketAddressPal.GetIPv6Address(socketAddressBuffer, address, out scope); |
| | | 20 | | |
| | | 21 | | // Clear scope if set for anything but Link Local address (always starts with fe80 first 10bits). |
| | 0 | 22 | | return new IPAddress(address, (address[0] == 0xFE && (address[1] & 0xC0) == 0x80) ? (long)scope : 0); |
| | | 23 | | } |
| | 0 | 24 | | else if (family == AddressFamily.InterNetwork) |
| | 0 | 25 | | { |
| | 0 | 26 | | return new IPAddress((long)SocketAddressPal.GetIPv4Address(socketAddressBuffer) & 0x0FFFFFFFF); |
| | | 27 | | } |
| | | 28 | | |
| | 0 | 29 | | throw new SocketException((int)SocketError.AddressFamilyNotSupported); |
| | 0 | 30 | | } |
| | | 31 | | |
| | | 32 | | public static unsafe void SetIPAddress(Span<byte> socketAddressBuffer, IPAddress address) |
| | | 33 | | { |
| | | 34 | | SocketAddressPal.SetAddressFamily(socketAddressBuffer, address.AddressFamily); |
| | | 35 | | SocketAddressPal.SetPort(socketAddressBuffer, 0); |
| | | 36 | | if (address.AddressFamily == AddressFamily.InterNetwork) |
| | | 37 | | { |
| | | 38 | | #pragma warning disable CS0618 |
| | | 39 | | SocketAddressPal.SetIPv4Address(socketAddressBuffer, (uint)address.Address); |
| | | 40 | | #pragma warning restore CS0618 |
| | | 41 | | } |
| | | 42 | | else |
| | | 43 | | { |
| | | 44 | | Span<byte> addressBuffer = stackalloc byte[IPAddressParserStatics.IPv6AddressBytes]; |
| | | 45 | | address.TryWriteBytes(addressBuffer, out int written); |
| | | 46 | | Debug.Assert(written == IPAddressParserStatics.IPv6AddressBytes); |
| | | 47 | | SocketAddressPal.SetIPv6Address(socketAddressBuffer, addressBuffer, (uint)address.ScopeId); |
| | | 48 | | } |
| | | 49 | | } |
| | | 50 | | |
| | | 51 | | public static IPEndPoint CreateIPEndPoint(ReadOnlySpan<byte> socketAddressBuffer) |
| | | 52 | | { |
| | | 53 | | return new IPEndPoint(GetIPAddress(socketAddressBuffer), SocketAddressPal.GetPort(socketAddressBuffer)); |
| | | 54 | | } |
| | | 55 | | |
| | | 56 | | // suggestion from https://github.com/dotnet/runtime/issues/78993 |
| | | 57 | | public static void Serialize(this IPEndPoint endPoint, Span<byte> destination) |
| | | 58 | | { |
| | | 59 | | SocketAddressPal.SetAddressFamily(destination, endPoint.AddressFamily); |
| | | 60 | | SetIPAddress(destination, endPoint.Address); |
| | | 61 | | SocketAddressPal.SetPort(destination, (ushort)endPoint.Port); |
| | | 62 | | } |
| | | 63 | | |
| | | 64 | | public static unsafe bool Equals(this IPEndPoint endPoint, ReadOnlySpan<byte> socketAddressBuffer) |
| | | 65 | | { |
| | | 66 | | if (socketAddressBuffer.Length >= SocketAddress.GetMaximumAddressSize(endPoint.AddressFamily) && |
| | | 67 | | endPoint.AddressFamily == SocketAddressPal.GetAddressFamily(socketAddressBuffer) && |
| | | 68 | | endPoint.Port == (int)SocketAddressPal.GetPort(socketAddressBuffer)) |
| | | 69 | | { |
| | | 70 | | if (endPoint.AddressFamily == AddressFamily.InterNetwork) |
| | | 71 | | { |
| | | 72 | | #pragma warning disable CS0618 |
| | | 73 | | return endPoint.Address.Address == (long)SocketAddressPal.GetIPv4Address(socketAddressBuffer); |
| | | 74 | | #pragma warning restore CS0618 |
| | | 75 | | } |
| | | 76 | | else |
| | | 77 | | { |
| | | 78 | | Span<byte> addressBuffer1 = stackalloc byte[IPAddressParserStatics.IPv6AddressBytes]; |
| | | 79 | | Span<byte> addressBuffer2 = stackalloc byte[IPAddressParserStatics.IPv6AddressBytes]; |
| | | 80 | | SocketAddressPal.GetIPv6Address(socketAddressBuffer, addressBuffer1, out uint scopeid); |
| | | 81 | | if (endPoint.Address.ScopeId != (long)scopeid) |
| | | 82 | | { |
| | | 83 | | return false; |
| | | 84 | | } |
| | | 85 | | endPoint.Address.TryWriteBytes(addressBuffer2, out _); |
| | | 86 | | return addressBuffer1.SequenceEqual(addressBuffer2); |
| | | 87 | | } |
| | | 88 | | } |
| | | 89 | | |
| | | 90 | | return false; |
| | | 91 | | } |
| | | 92 | | } |
| | | 93 | | } |
| | | 94 | | |