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using System;
using System.IO;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Tls
{
internal sealed class HandshakeMessageOutput
: MemoryStream
{
internal static int GetLength(int bodyLength)
{
return 4 + bodyLength;
}
/// <exception cref="IOException"/>
internal static void Send(TlsProtocol protocol, short handshakeType, byte[] body)
{
HandshakeMessageOutput message = new HandshakeMessageOutput(handshakeType, body.Length);
message.Write(body, 0, body.Length);
message.Send(protocol);
}
/// <exception cref="IOException"/>
internal HandshakeMessageOutput(short handshakeType)
: this(handshakeType, 60)
{
}
/// <exception cref="IOException"/>
internal HandshakeMessageOutput(short handshakeType, int bodyLength)
: base(GetLength(bodyLength))
{
TlsUtilities.CheckUint8(handshakeType);
TlsUtilities.WriteUint8(handshakeType, this);
// Reserve space for length
Seek(3L, SeekOrigin.Current);
}
/// <exception cref="IOException"/>
internal void Send(TlsProtocol protocol)
{
// Patch actual length back in
int bodyLength = (int)Length - 4;
TlsUtilities.CheckUint24(bodyLength);
Seek(1L, SeekOrigin.Begin);
TlsUtilities.WriteUint24(bodyLength, this);
#if PORTABLE
byte[] buf = ToArray();
int count = buf.Length;
#else
byte[] buf = GetBuffer();
int count = (int)Length;
#endif
protocol.WriteHandshakeMessage(buf, 0, count);
Platform.Dispose(this);
}
}
}
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