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(PowerBuilder) Download a Binary File into Memory

Downloads a binary file into memory.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Rest
integer li_BTls
integer li_Port
integer li_BAutoReconnect
integer li_Success
oleobject loo_AzAuth
oleobject loo_BdFileContents
oleobject loo_SbXmlErr

// Azure File Service Example: Download a Binary File to Memory
// See:  https://docs.microsoft.com/en-us/rest/api/storageservices/get-file

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

loo_Rest = create oleobject
li_rc = loo_Rest.ConnectToNewObject("Chilkat_9_5_0.Rest")
if li_rc < 0 then
    destroy loo_Rest
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Connect to the Azure Storage Blob Service
li_BTls = 1
li_Port = 443
li_BAutoReconnect = 1
// In this example, the storage account name is "chilkat".
li_Success = loo_Rest.Connect("chilkat.file.core.windows.net",li_Port,li_BTls,li_BAutoReconnect)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
end if

// Provide Azure Cloud credentials for the REST calls.
loo_AzAuth = create oleobject
li_rc = loo_AzAuth.ConnectToNewObject("Chilkat_9_5_0.AuthAzureStorage")

loo_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).
loo_AzAuth.Account = "chilkat"
loo_AzAuth.Scheme = "SharedKey"
loo_AzAuth.Service = "File"
// This causes the "x-ms-version: 2020-08-04" header to be automatically added.
loo_AzAuth.XMsVersion = "2020-08-04"
li_Success = loo_Rest.SetAuthAzureStorage(loo_AzAuth)

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

// Send a GET request to download the file "penguins.jpg" to a BinData object.
// (The share name is "pip")
loo_BdFileContents = create oleobject
li_rc = loo_BdFileContents.ConnectToNewObject("Chilkat_9_5_0.BinData")

li_Success = loo_Rest.FullRequestNoBodyBd("GET","/pip/wildlife/antarctic/penguins.jpg",loo_BdFileContents)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    destroy loo_AzAuth
    destroy loo_BdFileContents
    return
end if

// When successful, the response status will be 200.
// If a non-success status code is returned, then the bdFileContents actually contains the XML error message.
if loo_Rest.ResponseStatusCode <> 200 then
    // Examine the request/response to see what happened.
    Write-Debug "response status code = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "response status text = " + loo_Rest.ResponseStatusText
    Write-Debug "response header: " + loo_Rest.ResponseHeader
    loo_SbXmlErr = create oleobject
    li_rc = loo_SbXmlErr.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")

    loo_SbXmlErr.AppendBd(loo_BdFileContents,"utf-8",0,0)
    Write-Debug "response body (if any): " + loo_SbXmlErr.GetAsString()
    Write-Debug "---"
    Write-Debug "LastRequestStartLine: " + loo_Rest.LastRequestStartLine
    Write-Debug "LastRequestHeader: " + loo_Rest.LastRequestHeader
    destroy loo_Rest
    destroy loo_AzAuth
    destroy loo_BdFileContents
    destroy loo_SbXmlErr
    return
end if

Write-Debug "Size of the downloaded file = " + string(loo_BdFileContents.NumBytes)

// See the online reference documentation for the BinData class for ways
// to access the bytes.

loo_BdFileContents.WriteFile("qa_output/penguins.jpg")


destroy loo_Rest
destroy loo_AzAuth
destroy loo_BdFileContents
destroy loo_SbXmlErr

 

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