Lianja

Log In After ConnectOnly on an FTP Server

Demonstrates the Chilkat Ftp2.LoginAfterConnectOnly method, which authenticates a control connection previously established by ConnectOnly. It takes no arguments, sends USER, PASS, and ACCT when required, then performs normal post-login initialization.

Background: This is the second half of the two-step connect. Beyond sending the credentials, it runs the same post-login setup Connect would — for example issuing TYPE I and any auto-negotiated features — so the session ends up in the same ready state either way. The value of the split is entirely in what you can do in the gap between the two calls.

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llSuccess = .F.

//  Demonstrates the Ftp2.LoginAfterConnectOnly method, which authenticates a control connection
//  previously established by ConnectOnly.  It takes no arguments and sends USER, PASS, and (when
//  required) ACCT, then performs normal post-login initialization.

loFtp = createobject("CkFtp2")

loFtp.Hostname = "ftp.example.com"
loFtp.Port = 21

//  First connect without logging in.
llSuccess = loFtp.ConnectOnly()
if (llSuccess = .F.) then
    ? loFtp.LastErrorText
    release loFtp
    return
endif

//  Set credentials (for example, after inspecting the greeting), then log in.
loFtp.Username = "myFtpLogin"
loFtp.Password = "myPassword"

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

? "Logged in."

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



release loFtp