WebTcpipGetOptions Function

Action

Retrieves a TCP/IP connection’s specific options.

Include file

WebAPI.bdh

Syntax

WebTcpipGetOptions(     in hWeb      : number,
                        out nOptions : number ) : boolean;

Return value

true if the operation succeeded
false otherwise

Parameter	Description
hWeb	Valid handle to a Web connection created by WebTcpipConnect. This function currently reflects flags set by WebTcpipSetTelnetMode and will be extended by other configurations in future.
nOptions	Numeric variable where current bitflag option settings are to be placed. Currently the options may return any bitwise combination of: TELNET_MODEOPT_FILTER_NOPS := 0x0001 TELNET_MODEOPT_AUTOANSWER_TM := 0x0002 TELNET_MODEOPT_FILTER_TM := 0x0004 TELNET_MODEOPT_RFC_1576 := 0x0007 TELNET_MODEOPT_AUTO_RECV := 0x0018 TEELNET_MODEOPT_SYNC := 0x0020; See WebTcpipSetTelnetMode for details.

Parameter

Description

hWeb

Valid handle to a Web connection created by WebTcpipConnect. This function currently reflects flags set by WebTcpipSetTelnetMode and will be extended by other configurations in future.

nOptions

Numeric variable where current bitflag option settings are to be placed. Currently the options may return any bitwise combination of:

TELNET_MODEOPT_FILTER_NOPS := 0x0001
TELNET_MODEOPT_AUTOANSWER_TM := 0x0002
TELNET_MODEOPT_FILTER_TM := 0x0004
TELNET_MODEOPT_RFC_1576 := 0x0007
TELNET_MODEOPT_AUTO_RECV := 0x0018
TEELNET_MODEOPT_SYNC := 0x0020;

See WebTcpipSetTelnetMode for details.

Example

dcltrans
  transaction TInit
  begin
    StrSetHostCP(28591); // 28591 (ISO 8859-1 Latin I)
  end TInit;

  transaction   TMain
  var
    hWeb0     : number;
    sBuffer   : string;
    sBoundary : string;
    nOption   : number;
  begin
    WebTcpipConnect(hWeb0, "My.TelnetHost.IP", WEB_PORT_TELNET);
    WebTcpipSetTelnetMode(hWeb0, TERMINAL_TYPE_ANSI, 80, 24, true, TELNET_MODEOPT_SYNC);
    WebTcpipGetOptions(hWeb0, nOption);
    if nOption <> TELNET_MODEOPT_RFC_1576 then
      WebTcpipSetOptions(hWeb0, TELNET_MODEOPT_RFC_1576);
    end;
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_TerminalType);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_TerminalSpeed);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_XDisplayLocation);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_NewEnvironment);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_TerminalType);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WONT, TELNET_OPT_TerminalSpeed);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WONT, TELNET_OPT_XDisplayLocation);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WONT, TELNET_OPT_NewEnvironment);
    WebTelnetRecvSubNegotiation(hWeb0, TELNET_OPT_TerminalType);
    WebTelnetSendTerminalType(hWeb0, "vt100");
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_SuppressGoAhead);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_Echo);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_NegotiateWindowSize);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_Status);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_RemoteFlowControl);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_SuppressGoAhead);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WONT, TELNET_OPT_Echo);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_NegotiateWindowSize);
    WebTelnetSendSubNegotiation(hWeb0, TELNET_OPT_NegotiateWindowSize, "\h00500018");
    WebTelnetSendCommand(hWeb0, TELNET_CMD_DONT, TELNET_OPT_Status);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WONT, TELNET_OPT_RemoteFlowControl);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_Echo);
    WebTcpipGetPacketBoundary(hWeb0, sBoundary);    
    WebTcpipRecvPacketsUntilData(hWeb0, "login: ");
    WebTelnetTypeKeys(hWeb0, StrToHostCP("leo"), 359.3, TELNET_FLAG_CASE_SENSITIVE);
    WebTcpipSendBin(hWeb0, "\h0D00");
    WebTcpipRecvExact(hWeb0, NULL, 390);
    WebTcpipSetPacketBoundary(hWeb0, sBoundary);
    WebTcpipRecvUntilIdle(hWeb0, NULL, 5000);
    WebTcpipSendBin(hWeb0, "\h0D000D0A");
    WebTcpipRecvPackets(hWeb0, NULL, 3);
    WebTcpipSendBin(hWeb0, "\h0D00");
    WebTcpipSendPacket(hWeb0, StrToHostCP("8") + "\h0D00");
    WebTcpipRecvClose(hWeb0, NULL);
    WebTcpipShutdown(hWeb0);
  end TMain;