B4X

Asynchronous HTTPS Upload (TLS)

See more Upload Examples

Demonstrates how to do an HTTPS (TLS) upload asynchronously in a background thread.

A server-side C# example showing how to receive an upload is located at C# ASP.NET Code to Receive Upload

B4X

Dim success As Boolean = False

Dim upload As ChilkatUpload
upload.Initialize("upload")

'  Specify the page (ASP, ASP.NET, Perl, Python, Ruby, CGI, etc)
'  that will process the HTTP Upload.
upload.Hostname = "www.mywebserver.com"
upload.Path = "/receiveUpload.aspx"

'  Add one or more files to be uploaded.
upload.AddFileReference("file1", "dude.gif")
upload.AddFileReference("file2", "pigs.xml")
upload.AddFileReference("file3", "sample.doc")

'  To upload using SSL/TLS (https), set the Ssl property = True
upload.Ssl = True

'  Begin the HTTP upload in a background thread:
success = upload.BeginUpload
If success <> True Then
    Log(upload.LastErrorText)
Else
    Log("Upload started..")
End If


'  Wait for the upload to finish.
'  Print the progress as we wait...
Do While (upload.UploadInProgress = True)
    '  We can abort the upload at any point by calling:
    '  upload.AbortUpload();

    '  Display the percentage complete and the number of bytes uploaded so far..
    '  The total upload size will become set after the upload begins:
    Log(upload.PercentUploaded & "% " & upload.NumBytesSent & "/" & upload.TotalUploadSize)

    '  Sleep 2/10ths of a second.
    upload.SleepMs(200)

Loop

'  Did the upload succeed?
If upload.UploadSuccess = True Then
    Log("Files uploaded!")
Else
    Log(upload.LastErrorText)
End If