DoOption Property

A single character Telnet option code to be sent to the server with the Telnet DO command.


ANSI (Cross Platform)
int SetDoOption(int iDoOption);

Unicode (Windows)
INT SetDoOption(INT iDoOption);
@property (nonatomic,readwrite,assign,getter=doOption,setter=setDoOption:) int doOption;
- (int)doOption;
- (void)setDoOption:(int)newDoOption;

IPWORKS_EXTERNAL int IPWORKS_CALL IPWorks_Telnet_Set(void *lpObj, int propid, int arridx, const void *val, int cbVal);

Default Value



For a list of option codes and their descriptions, please look at the Telnet RFCs. The following are a few examples:

0 (TRANSMIT-BINARY)Enables or disables binary (8 bit) transmission.
1 (ECHO)Telnet ECHO option. Specifies whether bytes sent should be echoed or not.
3 (SUPPRESS-GO-AHEAD)Used to enable or disable transmission of the Telnet GO_AHEAD command.
24 (TERMINAL-TYPE)Allows or disallows terminal type negotiation.
31 (NAWS)Allows or disallows window size negotiation.

This property is write-only and not available at design time.

Data Type


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IPWorks 2020 C++ Edition - Version 20.0 [Build 8161]