Chilkat Examples

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Visual Basic 6.0 Examples

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(Visual Basic 6.0) REST File Streaming Upload

Demonstrates how to stream the REST body from a file. This example demonstrates a REST upload to the Azure Cloud Storage service.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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

Dim rest As New ChilkatRest

'  Connect to the Azure Storage Blob Service
Dim bTls As Long
bTls = 1
Dim port As Long
port = 443
Dim bAutoReconnect As Long
bAutoReconnect = 1
'  In this example, the storage account name is "chilkat".
Dim success As Long
success = rest.Connect("chilkat.blob.core.windows.net",port,bTls,bAutoReconnect)
If (success <> 1) Then
    Text1.Text = Text1.Text & rest.LastErrorText & vbCrLf
    Exit Sub
End If

'  Provide Azure Cloud credentials for the REST call.
Dim azAuth As New ChilkatAuthAzureStorage
azAuth.AccessKey = "AZURE_ACCESS_KEY"
'  The account name used here should match the 1st part of the domain passed in the call to Connect (above).
azAuth.Account = "chilkat"
azAuth.Scheme = "SharedKey"
azAuth.Service = "Blob"
'  This causes the "x-ms-version: 2015-02-21" header to be automatically added.
azAuth.XMsVersion = "2015-02-21"
success = rest.SetAuthAzureStorage(azAuth)

'  Set some request headers.
success = rest.AddHeader("x-ms-blob-content-disposition","attachment; filename=""hamlet.xml""")
success = rest.AddHeader("x-ms-blob-type","BlockBlob")
success = rest.AddHeader("x-ms-meta-m1","v1")
success = rest.AddHeader("x-ms-meta-m2","v2")

'  Note: The application does not need to explicitly set the following
'  headers: x-ms-date, Authorization, and Content-Length.  These headers
'  are automatically set by Chilkat.

Dim fileStream As New ChilkatStream
fileStream.SourceFile = "qa_data/xml/hamlet.xml"

'  Upload to the Azure Cloud Storage service.
'  The file is streamed, so the full file never has to completely reside in memory.
'  The file is uploaded to the container named "test".
Dim responseStr As String
responseStr = rest.FullRequestStream("PUT","/test/hamlet.xml",fileStream)
If (rest.LastMethodSuccess <> 1) Then
    Text1.Text = Text1.Text & rest.LastErrorText & vbCrLf
    Exit Sub
End If

'  When successful, the Azure Storage service will respond with a 201 response code,
'  with an empty body.  Therefore, in the success condition, the responseStr is empty.
If (rest.ResponseStatusCode = 201) Then
    Text1.Text = Text1.Text & "File uploaded." & vbCrLf
Else
    '  Examine the request/response to see what happened.
    Text1.Text = Text1.Text & "response status code = " & rest.ResponseStatusCode & vbCrLf
    Text1.Text = Text1.Text & "response status text = " & rest.ResponseStatusText & vbCrLf
    Text1.Text = Text1.Text & "response header: " & rest.ResponseHeader & vbCrLf
    Text1.Text = Text1.Text & "response body (if any): " & responseStr & vbCrLf
    Text1.Text = Text1.Text & "---" & vbCrLf
    Text1.Text = Text1.Text & "LastRequestStartLine: " & rest.LastRequestStartLine & vbCrLf
    Text1.Text = Text1.Text & "LastRequestHeader: " & rest.LastRequestHeader & vbCrLf
End If


 

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