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(VB.NET) Restart/Resume FTP UploadDemonstrates how to restart / resume an FTP upload.
' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. Dim ftp As New Chilkat.Ftp2 ftp.Hostname = "ftp.example.com" ftp.Username = "login" ftp.Password = "password" ' Connect and login to the FTP server. Dim success As Boolean = ftp.Connect() If (success <> True) Then Debug.WriteLine(ftp.LastErrorText) Exit Sub End If ' Change to the remote directory where the file will be uploaded. success = ftp.ChangeRemoteDir("temp") If (success <> True) Then Debug.WriteLine(ftp.LastErrorText) Exit Sub End If ' 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.RestartNext = True ' Upload a file with restart. Dim localFilename As String = "bigFile.zip" Dim remoteFilename As String = "bigFile.zip" success = ftp.PutFile(localFilename,remoteFilename) If (success <> True) Then Debug.WriteLine(ftp.LastErrorText) Exit Sub End If success = ftp.Disconnect() Debug.WriteLine("File Uploaded!") |
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