Visual FoxPro

Set the FTP TLS Version and Ciphers

Demonstrates the TLS negotiation properties SslProtocol and SslAllowedCiphers, and reads back the negotiated TlsVersion and TlsCipherSuite after connecting.

Background: SslProtocol sets the allowed (or minimum) TLS version — default lets Chilkat negotiate the best available, while a value like TLS 1.2 or higher enforces a floor for policy compliance. SslAllowedCiphers narrows the offered cipher suites, which most applications should leave at the secure defaults. The read-only TlsVersion and TlsCipherSuite report what was actually agreed, useful for logging and audits.

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Visual FoxPro

LOCAL lnSuccess
LOCAL loFtp

lnSuccess = 0

loFtp = CreateObject('Chilkat.Ftp2')

loFtp.Hostname = "ftp.example.com"
loFtp.Username = "myFtpLogin"

loFtp.AuthTls = 1

*  Normally you would not hard-code the password in source.  You should instead obtain it
*  from an interactive prompt, environment variable, or a secrets vault.
loFtp.Password = "myPassword"

*  Require at least TLS 1.2.  Accepted values include "default", "TLS 1.3", "TLS 1.2",
*  "TLS 1.2 or higher", and so on.  "default" lets Chilkat negotiate the best available.
loFtp.SslProtocol = "TLS 1.2 or higher"

*  Optionally restrict the cipher suites offered.  Leave empty to use Chilkat's secure defaults.
loFtp.SslAllowedCiphers = "TLS_AES_256_GCM_SHA384,TLS_CHACHA20_POLY1305_SHA256"

lnSuccess = loFtp.Connect()
IF (lnSuccess = 0) THEN
    ? loFtp.LastErrorText
    RELEASE loFtp
    CANCEL
ENDIF

*  After connecting, read back what was actually negotiated.
? "Negotiated TLS version: " + loFtp.TlsVersion
? "Negotiated cipher suite: " + loFtp.TlsCipherSuite

lnSuccess = loFtp.Disconnect()
IF (lnSuccess = 0) THEN
    ? loFtp.LastErrorText
    RELEASE loFtp
    CANCEL
ENDIF

RELEASE loFtp