B4X

Append Bytes to a Remote FTP File (BinData)

Demonstrates the Chilkat Ftp2.AppendFileBd method, which appends the bytes in a BinData to a remote file. The first argument is the remote filename and the second is the BinData. No conversion is performed.

Background: The binary append: add in-memory bytes to the end of a remote file without an intermediate local file and without any encoding or line-ending translation. It is the right choice for growing a binary file — concatenating captured data, for instance — where exact bytes matter.

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B4X

Dim success As Boolean = False

'  Demonstrates the Ftp2.AppendFileBd method, which appends the bytes in a BinData to a remote
'  file.  The 1st argument is the remote filename and the 2nd is the BinData.

Dim ftp As ChilkatFtp2
ftp.Initialize("ftp")

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

'  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.
ftp.Password = "myPassword"

success = ftp.Connect
If success = False Then
    Log(ftp.LastErrorText)
    Return
End If


Dim bd As ChilkatBinData
bd.Initialize
success = bd.LoadFile("qa_data/more_data.bin")
If success = False Then
    Log(bd.LastErrorText)
    Return
End If


success = ftp.AppendFileBd("data/collected.bin", bd)
If success = False Then
    Log(ftp.LastErrorText)
    Return
End If

Log("Appended " & bd.NumBytes & " bytes.")

success = ftp.Disconnect
If success = False Then
    Log(ftp.LastErrorText)
    Return
End If