/// <summary>
/// reply WILL to this received statement.
/// </summary>
/// <param name="NetStream"></param>
public virtual TelnetCommand BuildWillReply( )
{
var replyStmt =
new TelnetCommand(CommandCode.WILL, this.Subject.Value);
return(replyStmt);
}
public static TelnetCommand Factory(InputByteArray InputArray, CommandCode CmdCode)
{
TelnetCommand telnetCmd = null;
TelnetSubject?subject = null;
if (InputArray.RemainingLength > 2)
{
subject = InputArray.PeekTelnetSubject(2);
}
if (CmdCode == CommandCode.SE)
{
telnetCmd = new EndSubNegCommand(InputArray);
}
else if (CmdCode == CommandCode.EOR)
{
telnetCmd = new EOR_Command(InputArray);
}
else if (subject == null)
{
telnetCmd = new TelnetCommand(InputArray, CmdCode);
}
else if (subject.Value == TelnetSubject.NewEnviron)
{
telnetCmd = new NewEnvironCommand(InputArray, CmdCode);
}
else if (subject.Value == TelnetSubject.TerminalType)
{
telnetCmd = new TerminalTypeCommand(InputArray, CmdCode);
}
else if (subject.Value == TelnetSubject.END_OF_RECORD)
{
telnetCmd = new EndOfRecordStatement(InputArray, CmdCode);
}
else if (subject.Value == TelnetSubject.TRANSMIT_BINARY)
{
telnetCmd = new TransmitBinaryCommand(InputArray, CmdCode);
}
else if (subject.Value == TelnetSubject.NAWS)
{
telnetCmd = new NawsStatement(InputArray, CmdCode);
}
else if (subject.Value == TelnetSubject.ECHO)
{
throw new Exception("echo subject of " + CmdCode.ToString() + " command.");
}
else
{
throw new Exception("Unexpect telnet command");
}
return(telnetCmd);
}
/// <summary>
/// read next Telnet command byte sequence from the input byte array.
/// </summary>
/// <param name="InputArray"></param>
/// <returns></returns>
public static TelnetCommand NextTelnetCommand(
this InputByteArray InputArray)
{
TelnetCommand cmd = null;
var code = InputArray.PeekTelnetCommandCode( );
if (code != null)
{
cmd = TelnetCommand.Factory(InputArray, code.Value);
}
return(cmd);
}
/// <summary>
/// reply to the DO command with a WILL or WONT command as per NegotiateSettings.
/// </summary>
/// <param name="Settings"></param>
/// <returns></returns>
public TelnetCommand BuildReply(NegotiateSettings Settings)
{
TelnetCommand reply = null;
var option = this.Subject.Value;
if (Settings.OptionDict.ContainsKey(option) == true)
{
var cmdCode = Settings.OptionDict[option];
reply = new TelnetCommand(cmdCode, this.Subject.Value);
}
else
{
reply = new TelnetCommand(CommandCode.WONT, this.Subject.Value);
}
return(reply);
}
