Lianja

Connect to FTP Through a SOCKS Proxy

Demonstrates connecting through a SOCKS proxy using SocksVersion, SocksHostname, SocksPort, SocksUsername, and SocksPassword.

Background: SOCKS is a general-purpose TCP relay, so it carries FTP transparently. SocksVersion is the switch — 0 disables it, while 4 or 5 selects the protocol. SOCKS5 supports username/password authentication and is the usual choice; SOCKS4 supports only a user identifier. Because FTP opens separate data connections, a SOCKS proxy combined with passive mode is generally the most reliable arrangement.

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llSuccess = .F.

loFtp = createobject("CkFtp2")

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

//  SocksVersion selects the proxy: 0 (default) = none, 4 = SOCKS4, 5 = SOCKS5.
loFtp.SocksVersion = 5
loFtp.SocksHostname = "socks.example.com"
loFtp.SocksPort = 1080

//  SOCKS5 supports username/password authentication; SOCKS4 uses only a user identifier.
loFtp.SocksUsername = "myProxyLogin"
loFtp.SocksPassword = "myProxyPassword"

//  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"

llSuccess = loFtp.Connect()
if (llSuccess = .F.) then
    ? loFtp.LastErrorText
    release loFtp
    return
endif

? "Connected through the SOCKS proxy."

llSuccess = loFtp.Disconnect()
if (llSuccess = .F.) then
    ? loFtp.LastErrorText
    release loFtp
    return
endif



release loFtp