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;
    }

    // ..
    }