/// <summary>
/// Serializes and encrypts the message into a byte array.
/// </summary>
/// <param name="sharedKey">The shared encryption key.</param>
/// <returns>The serialized message.</returns>
public byte[] ToArray(SymmetricKey sharedKey)
{
if (this.HostEntry == null)
{
throw new InvalidOperationException("HostEntry property cannot be null.");
}
using (var ms = new EnhancedMemoryStream(2048))
{
ms.WriteInt32Le(Magic);
ms.WriteByte((byte)FormatVer);
ms.WriteInt64Le(TimeStampUtc.Ticks);
ms.WriteInt32Le((int)Flags);
ms.WriteString16(this.HostEntry.ToString());
ms.WriteBytesNoLen(Crypto.GetSalt4());
return(Crypto.Encrypt(ms.ToArray(), sharedKey));
}
}
/// <summary>
/// Serializes and encrypts the message into a byte array.
/// </summary>
/// <param name="sharedKey">The shared encryption key.</param>
/// <returns>The serialized message.</returns>
public byte[] ToArray(SymmetricKey sharedKey)
{
using (var ms = new EnhancedMemoryStream(2048))
{
var addressBytes = SourceAddress.GetAddressBytes();
if (addressBytes.Length != 4)
{
throw new InvalidOperationException("UdpBroadcastMessage supports only IPv4 address.");
}
ms.WriteInt32Le(Magic);
ms.WriteInt64Le(TimeStampUtc.Ticks);
ms.WriteBytesNoLen(SourceAddress.GetAddressBytes());
ms.WriteByte((byte)MessageType);
ms.WriteByte((byte)BroadcastGroup);
ms.WriteBytes16(Payload);
ms.WriteBytesNoLen(Crypto.GetSalt4());
return(Crypto.Encrypt(ms.ToArray(), sharedKey));
}
}
