/// <summary>
/// Decode a datagram packet into this DhcpMessage object.
/// </summary>
/// <param name="buf">ByteBuffer containing the packet to be decoded</param>
public void Decode(ByteBuffer buf)
{
log.Debug("Decoding DhcpMessage from: " + remoteAddress);
if ((buf != null) && buf.hasRemaining())
{
DecodeMessageType(buf);
if (buf.hasRemaining())
{
SetTransactionId(DhcpTransactionId.Decode(buf));
if (log.IsDebugEnabled)
{
log.Debug("TransactionId=" + transactionId);
}
if (buf.hasRemaining())
{
DecodeOptions(buf);
}
else
{
string errmsg = "Failed to decode options: buffer is empty";
log.Error(errmsg);
throw new IOException(errmsg);
}
}
else
{
string errmsg = "Failed to decode transaction id: buffer is empty";
log.Error(errmsg);
throw new IOException(errmsg);
}
}
else
{
string errmsg = "Failed to decode message: buffer is empty";
log.Error(errmsg);
throw new IOException(errmsg);
}
if (log.IsDebugEnabled)
{
log.Debug("DhcpMessage decoded.");
}
}
/// <summary>
/// Encode this DhcpMessage to wire format for sending.
/// </summary>
/// <returns>a ByteBuffer containing the encoded DhcpMessage</returns>
public ByteBuffer Encode()
{
if (log.IsDebugEnabled)
{
log.Debug("Encoding DhcpMessage for: " + remoteAddress);
}
ByteBuffer buf = ByteBuffer.allocate(1024);
buf.put((byte)MessageType);
buf.put(DhcpTransactionId.Encode(transactionId));
buf.put(EncodeOptions());
buf.flip();
if (log.IsDebugEnabled)
{
log.Debug("DhcpMessage encoded.");
}
return(buf);
}
