SecureBlackbox 2020 C++ Edition

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ClearCommandChannel Method

Sends CCC (Clear Command Channel) command to the server.

Syntax

ANSI (Cross Platform)
int ClearCommandChannel(int bGracefulSSLClosure);

Unicode (Windows)
INT ClearCommandChannel(BOOL bGracefulSSLClosure);
- (void)clearCommandChannel:(BOOL)gracefulSSLClosure;
#define MID_FTPCLIENT_CLEARCOMMANDCHANNEL 8

SECUREBLACKBOX_EXTERNAL int SECUREBLACKBOX_CALL SecureBlackbox_FTPClient_Do(void *lpObj, int methid, int cparam, void *param[], int cbparam[], int64 *lpllVal);

Remarks

Use this method to send a CCC command. CCC clears command channel encryption state, turning off TLS encryption.

Some servers expect this command to allow for the control channel to be properly handled by NATs.

Error Handling (C++)

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)
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SecureBlackbox 2020 C++ Edition - Version 20.0 [Build 8166]