CkPython

Restart/Resume FTP Upload

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Demonstrates how to restart / resume an FTP upload. CkPython

import sys
import chilkat

success = False

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

ftp = chilkat.CkFtp2()

ftp.put_Hostname("ftp.example.com")
ftp.put_Username("login")
ftp.put_Password("password")

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

# Change to the remote directory where the file will be uploaded.
success = ftp.ChangeRemoteDir("temp")
if (success != True):
    print(ftp.lastErrorText())
    sys.exit()

# In this example, assume that a previous FTP upload failed,
# and the incomplete file (bigFile.zip) exists on the FTP server.
# You only need to set the RestartNext property to resume
# the upload.  When RestartNext is set, the next call
# to PutFile (or PutFileFromBinaryData, PutFileFromTextData)
# will automatically resume the upload from the point of failure.
# (The way it works is that the FTP component sends a "SIZE"
# command to the FTP server to find out how many bytes of
# the file already exist on the server.  It then begins
# uploading from that point.

# Note: After PutFile is called, the RestartNext property
# is automatically set to false.
ftp.put_RestartNext(True)

# Upload a file with restart.
localFilename = "bigFile.zip"
remoteFilename = "bigFile.zip"

success = ftp.PutFile(localFilename,remoteFilename)
if (success != True):
    print(ftp.lastErrorText())
    sys.exit()

success = ftp.Disconnect()

print("File Uploaded!")