B4X

Example: Http.ResumeDownload method

Demonstrates the ResumeDownload method. B4X

Dim success As Boolean = False

Dim http As ChilkatHttp
http.Initialize("http")
http.KeepResponseBody = True

'  To demonstrate resuming a download, we've created a file on the chilkatsoft.com
'  web server that contains the first 82,379 bytes of the full  279,658 bytes of the hamlet.xml file.

'  We'll first download the partial file, and pretend it was a previous incomplete attempt to download the entire file.
Dim localFilePath As String = "c:/temp/qa_output/hamlet.xml"
success = http.Download("https://www.chilkatsoft.com/testData/hamlet_partial.xml", localFilePath)
If success = False Then
    Log(http.LastErrorText)
    Return
End If


'  Download the remainder of hamlet.xml.
success = http.ResumeDownload("https://www.chilkatsoft.com/testData/hamlet.xml", localFilePath)
Dim statusCode As Int = http.LastStatus
If success = False Then
    If statusCode = 0 Then
        '  Unable to either send the request or get the response.
        Log(http.LastErrorText)
    Else
        '  We got a response, but the status code was not in the 200s
        Log("Response status code: " & statusCode)
        '  Examine the response body.
        Log("Response body:")
        Log(http.LastResponseBody)
    End If

    Log("Download failed.")

Else
    Log("Download success, response status = " & statusCode)
End If


'  The hamlet.xml file should be 279,658 bytes
Dim fac As ChilkatFileAccess
fac.Initialize
Log("size of hamlet.xml: " & fac.FileSize(localFilePath))

Log("Success.")