/// <summary>
/// Converts dhcp message into string object.
/// </summary>
public override String ToString()
{
StringBuilder sb = new StringBuilder();
sb.AppendLine();
sb.AppendLine(" DHCP PACKET");
sb.AppendLine(String.Concat(" Message Timestamp : ", this.Timestamp.ToLocalTime().ToString()));
sb.AppendLine(String.Concat(" Message Type (op) : ", OperationString.GetName(this.Operation)));
sb.AppendLine(String.Concat(" Hardware Type (htype) : ", HardwareString.GetName(this.Hardware)));
sb.AppendLine(String.Concat(" Hops (hops) : ", ByteUtility.PrintByte(this.Hops)));
sb.AppendLine(String.Concat(" Transaction Id (Xid) : ", this.SessionId.ToHexString("0x")));
sb.AppendLine(String.Concat(" Seconds Elapsed (secs) : ", this.SecondsElapsed.ToString()));
sb.AppendLine(String.Concat(" Flags (flags) : 0x", ByteUtility.PrintBytes(this._flags)));
sb.AppendLine(String.Concat(" Is Broadcast (flags) : ", this.IsBroadcast.ToString()));
sb.AppendLine(String.Concat(" Client Address (ciaddr) : ", this.ClientAddress.ToString()));
sb.AppendLine(String.Concat(" Assigned Address (yiaddr) : ", this.AssignedAddress.ToString()));
sb.AppendLine(String.Concat(" Next Server Address (siaddr) : ", this.NextServerAddress.ToString()));
sb.AppendLine(String.Concat(" Relay Agent Address (giaddr) : ", this.RelayAgentAddress.ToString()));
sb.AppendLine(String.Concat(" Hardware Address (chaddr) : ", this.ClientHardwareAddress.ToString()));
sb.AppendLine(String.Concat(" Server Host Name (sname) : ", ByteUtility.GetSafeString(this.ServerName)));
sb.AppendLine(String.Concat(" Boot File Name (file) : ", ByteUtility.GetSafeString(this.BootFileName)));
sb.AppendLine(String.Concat(" Option (Message Type) : ", MessageTypeString.GetName((MessageType)this.GetOptionData(DhcpOption.DhcpMessageType)[0])));
sb.AppendLine(String.Concat(" Option (Client Id) : ", ByteUtility.PrintSafeBytes(this.GetOptionData(DhcpOption.ClientId))));
sb.AppendLine(String.Concat(" Option (Host Name) : ", ByteUtility.GetSafeString(this.GetOptionData(DhcpOption.Hostname))));
sb.AppendLine(String.Concat(" Option (Address Request) : ", new InternetAddress(this.GetOptionData(DhcpOption.AddressRequest)).ToString()));
sb.AppendLine(String.Concat(" Option (Server Identifier) : ", new InternetAddress(this.GetOptionData(DhcpOption.ServerIdentifier)).ToString()));
sb.AppendLine(String.Concat(" Option (Dhcp Message) : ", ByteUtility.GetSafeString(this.GetOptionData(DhcpOption.DhcpMessage))));
foreach (DhcpOption option in _options.Keys)
{
byte optionId = (Byte)option;
byte[] optionValue = (byte[])_options[option];
sb.AppendLine(String.Concat(" Option (Binary) : ", ByteUtility.PrintByte(optionId) + " => " + ByteUtility.PrintBytes(optionValue, false)));
}
sb.AppendLine();
return(sb.ToString());
}