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using System;
using System.Collections;
using System.IO;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Crypto.Tls
{
public class ServerNameList
{
protected readonly IList mServerNameList;
/**
* @param serverNameList an {@link IList} of {@link ServerName}.
*/
public ServerNameList(IList serverNameList)
{
if (serverNameList == null || serverNameList.Count < 1)
throw new ArgumentException("must not be null or empty", "serverNameList");
this.mServerNameList = serverNameList;
}
/**
* @return an {@link IList} of {@link ServerName}.
*/
public virtual IList ServerNames
{
get { return mServerNameList; }
}
/**
* Encode this {@link ServerNameList} to a {@link Stream}.
*
* @param output
* the {@link Stream} to encode to.
* @throws IOException
*/
public virtual void Encode(Stream output)
{
MemoryStream buf = new MemoryStream();
foreach (ServerName entry in ServerNames)
{
entry.Encode(buf);
}
TlsUtilities.CheckUint16(buf.Length);
TlsUtilities.WriteUint16((int)buf.Length, output);
buf.WriteTo(output);
}
/**
* Parse a {@link ServerNameList} from a {@link Stream}.
*
* @param input
* the {@link Stream} to parse from.
* @return a {@link ServerNameList} object.
* @throws IOException
*/
public static ServerNameList Parse(Stream input)
{
int length = TlsUtilities.ReadUint16(input);
if (length < 1)
throw new TlsFatalAlert(AlertDescription.decode_error);
byte[] data = TlsUtilities.ReadFully(length, input);
MemoryStream buf = new MemoryStream(data, false);
IList server_name_list = Platform.CreateArrayList();
while (buf.Position < buf.Length)
{
ServerName entry = ServerName.Parse(buf);
server_name_list.Add(entry);
}
return new ServerNameList(server_name_list);
}
}
}
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