(CkPython) FTP Download Binary File to a Stream

Demonstrates how to FTP download a binary file to a Chilkat stream.

Note: This example requires Chilkat v9.5.0.67 or greater.

Chilkat Python Downloads install with pip pip3 install chilkat or download... Python Module for Windows, MacOS, Linux, Alpine Linux, Solaris

import sys
import chilkat

# This example assumes the Chilkat FTP2 API to have been previously unlocked.
# See FTP2 Unlock Sample for sample code.

ftp = chilkat.CkFtp2()

ftp.put_Hostname("www.my-ftp-server.com")
ftp.put_Username("mFtpLogin")
ftp.put_Password("myFtpPassword")
ftp.put_AuthTls(True)
ftp.put_Passive(True)

# Connect and login to the FTP server using TLS.
success = ftp.Connect()
if (success != True):
    print(ftp.lastErrorText())
    sys.exit()

# We'll read the incoming data chunk-by-chunk and write to an output file.
fac = chilkat.CkFileAccess()
success = fac.OpenForWrite("qa_output/penguins2.jpg")
if (success != True):
    print(fac.lastErrorText())
    sys.exit()

streamObj = chilkat.CkStream()

# Create a task to do the FTP download.
# t is a CkTask
t = ftp.GetFileToStreamAsync("penguins2.jpg",streamObj)
if (ftp.get_LastMethodSuccess() != True):
    print(ftp.lastErrorText())
    sys.exit()

# Start the task in a background thread.
t.Run()

bd = chilkat.CkBinData()
while streamObj.get_EndOfStream() != True :
    # Get the next chunk of JPG bytes.
    streamObj.ReadBd(bd)
    # Do something with it..
    # In this simple example, we'll just write to the file.
    fac.FileWriteBd(bd,0,0)
    # Clear for the next read.
    bd.Clear()

fac.FileClose()

print("Success.")