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67 lines
2.7 KiB
67 lines
2.7 KiB
#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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