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68 lines
2.7 KiB
68 lines
2.7 KiB
1 year ago
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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using System.IO;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Tls
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{
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/// <summary>RFC 6066 3. Server Name Indication</summary>
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/// <remarks>
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/// Current implementation uses this guidance: "For backward compatibility, all future data structures associated
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/// with new NameTypes MUST begin with a 16-bit length field. TLS MAY treat provided server names as opaque data
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/// and pass the names and types to the application.". RFC 6066 specifies ASCII encoding for host_name (possibly
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/// using A-labels for IDNs), but note that the previous version (RFC 4366) specified UTF-8 encoding (see RFC 6066
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/// Appendix A). For maximum compatibility, it is recommended that client code tolerate receiving UTF-8 from the
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/// peer, but only generate ASCII itself.
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/// </remarks>
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public sealed class ServerName
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{
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private readonly short nameType;
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private readonly byte[] nameData;
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public ServerName(short nameType, byte[] nameData)
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{
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if (!TlsUtilities.IsValidUint8(nameType))
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throw new ArgumentException("must be from 0 to 255", "nameType");
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if (null == nameData)
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throw new ArgumentNullException("nameData");
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if (nameData.Length < 1 || !TlsUtilities.IsValidUint16(nameData.Length))
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throw new ArgumentException("must have length from 1 to 65535", "nameData");
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this.nameType = nameType;
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this.nameData = nameData;
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}
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public byte[] NameData
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{
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get { return nameData; }
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}
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public short NameType
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{
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get { return nameType; }
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}
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/// <summary>Encode this <see cref="ServerName"/> to a <see cref="Stream"/>.</summary>
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/// <param name="output">the <see cref="Stream"/> to encode to.</param>
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/// <exception cref="IOException"/>
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public void Encode(Stream output)
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{
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TlsUtilities.WriteUint8(nameType, output);
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TlsUtilities.WriteOpaque16(nameData, output);
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}
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/// <summary>Parse a <see cref="ServerName"/> from a <see cref="Stream"/>.</summary>
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/// <param name="input">the <see cref="Stream"/> to parse from.</param>
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/// <returns>a <see cref="ServerName"/> object.</returns>
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/// <exception cref="IOException"/>
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public static ServerName Parse(Stream input)
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{
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short name_type = TlsUtilities.ReadUint8(input);
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byte[] nameData = TlsUtilities.ReadOpaque16(input, 1);
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return new ServerName(name_type, nameData);
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}
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}
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}
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#pragma warning restore
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#endif
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