private static byte[] ConstructHandshakePacketContent(HandshakeInfo handshakeInfo)
{
using (var builder = new PacketBuilder())
{
builder.WriteInt16(handshakeInfo.Version);
builder.WriteLengthString(handshakeInfo.Subversion);
builder.WriteBytes(handshakeInfo.ServerIv);
builder.WriteBytes(handshakeInfo.ClientIv);
// Locale ID (used for localizations and test servers)
builder.WriteByte(handshakeInfo.LocaleId);
return builder.ToByteArray();
}
}
/// <inheritdoc />
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="endpointCrypto"/> or <paramref name="handshakeInfo"/> are <see langword="null"/>.
/// </exception>
public void Start(EndpointCrypto endpointCrypto, HandshakeInfo handshakeInfo)
{
Guard.NotNull(() => endpointCrypto, endpointCrypto);
Guard.NotNull(() => handshakeInfo, handshakeInfo);
this.ThrowIfNoPacketReceivedSubscriber();
this.Crypto = endpointCrypto;
byte[] handshake = ConstructHandshakePacket(handshakeInfo);
this.BaseSession.Start();
this.BaseSession.Write(handshake);
}
private static byte[] ConstructHandshakePacket(HandshakeInfo handshakeInfo)
{
var content = ConstructHandshakePacketContent(handshakeInfo);
using (var builder = new PacketBuilder())
{
if (handshakeInfo.Header.HasValue)
{
builder.WriteInt16(handshakeInfo.Header.Value);
}
else
{
builder.WriteInt16((ushort)content.Length);
}
builder.WriteBytes(content);
return builder.ToByteArray();
}
}