C++

ConnectFailReason

See more FTP Examples

The ConnectFailReason property can be examined to determine the reason why the Connect method failed. The possible values are listed in the source code below: C++

#include <CkFtp2.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkFtp2 ftp;

    ftp.put_Hostname("ftp.example.com");
    ftp.put_Username("login");
    ftp.put_Password("password");

    //  Connect and login to the FTP server.
    success = ftp.Connect();
    if (success != true) {

        //  The possible failure reasons are:
        //  0 = success
        //  
        //  Normal (non-TLS) sockets:
        //  1 = empty hostname
        //  2 = DNS lookup failed
        //  3 = DNS timeout
        //  4 = Aborted by application.
        //  5 = Internal failure.
        //  6 = Connect Timed Out
        //  7 = Connect Rejected (or failed for some other reason)
        //  
        //  SSL/TLS:
        //  100 = TLS internal error.
        //  101 = Failed to send client hello.
        //  102 = Unexpected handshake message.
        //  103 = Failed to read server hello.
        //  104 = No server certificate.
        //  105 = Unexpected TLS protocol version.
        //  106 = Server certificate verify failed (the server certificate is expired or the cert's signature verification failed).
        //  107 = Unacceptable TLS protocol version.
        //  109 = Failed to read handshake messages.
        //  110 = Failed to send client certificate handshake message.
        //  111 = Failed to send client key exchange handshake message.
        //  112 = Client certificate's private key not accessible.
        //  113 = Failed to send client cert verify handshake message.
        //  114 = Failed to send change cipher spec handshake message.
        //  115 = Failed to send finished handshake message.
        //  116 = Server's Finished message is invalid.
        //  
        //  FTP:
        //  200 = Connected, but failed to receive greeting from FTP server.
        //  201 = Failed to do AUTH TLS or AUTH SSL.
        //  Protocol/Component:
        //  300 = asynch op in progress
        //  301 = login failure.

        int failReason = ftp.get_ConnectFailReason();

        std::cout << "connect fail reason = " << failReason << "\r\n";

        std::cout << ftp.lastErrorText() << "\r\n";
        return;
    }

    //  ...
    }