Chilkat Examples

ChilkatHOME.NET Core C#Android™AutoItCC#C++Chilkat2-PythonCkPythonClassic ASPDataFlexDelphi ActiveXDelphi DLLGoJavaLianjaMono C#Node.jsObjective-CPHP ActiveXPHP ExtensionPerlPowerBuilderPowerShellPureBasicRubySQL ServerSwift 2Swift 3,4,5...TclUnicode CUnicode C++VB.NETVBScriptVisual Basic 6.0Visual FoxProXojo Plugin

Lianja Examples

Web API Categories

ASN.1
AWS KMS
AWS Misc
Amazon EC2
Amazon Glacier
Amazon S3
Amazon S3 (new)
Amazon SES
Amazon SNS
Amazon SQS
Async
Azure Cloud Storage
Azure Key Vault
Azure Service Bus
Azure Table Service
Base64
Bounced Email
Box
CAdES
CSR
CSV
Certificates
Code Signing
Compression
DKIM / DomainKey
DNS
DSA
Diffie-Hellman
Digital Signatures
Dropbox
Dynamics CRM
EBICS
ECC
Ed25519
Email Object
Encryption
FTP
FileAccess
Firebase
GMail REST API
GMail SMTP/IMAP/POP
Geolocation
Google APIs
Google Calendar
Google Cloud SQL
Google Cloud Storage
Google Drive
Google Photos
Google Sheets
Google Tasks
Gzip
HTML-to-XML/Text
HTTP

HTTP Misc
IMAP
JSON
JSON Web Encryption (JWE)
JSON Web Signatures (JWS)
JSON Web Token (JWT)
Java KeyStore (JKS)
MHT / HTML Email
MIME
MS Storage Providers
Microsoft Graph
Misc
NTLM
OAuth1
OAuth2
OIDC
Office365
OneDrive
OpenSSL
Outlook
Outlook Calendar
Outlook Contact
PDF Signatures
PEM
PFX/P12
PKCS11
POP3
PRNG
REST
REST Misc
RSA
SCP
SCard
SFTP
SMTP
SSH
SSH Key
SSH Tunnel
ScMinidriver
SharePoint
SharePoint Online
Signing in the Cloud
Socket/SSL/TLS
Spider
Stream
Tar Archive
ULID/UUID
Upload
WebSocket
XAdES
XML
XML Digital Signatures
XMP
Zip
curl

 

 

 

(Lianja) Upload File in Blocks (with Content-MD5 header) and Commit the Block List

Demonstrates how to upload a file in blocks and then commit the block list. This example includes a Content-MD5 header for each block.

Chilkat Lianja Extension Download

Chilkat Lianja Extension

// Azure Blob Service Example: Upload a file in blocks, and then commit the block list.
// See also: https://msdn.microsoft.com/en-us/library/azure/dd135726.aspx

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

loRest = createobject("CkRest")

// Connect to the Azure Storage Blob Service
llBTls = .T.
lnPort = 443
llBAutoReconnect = .T.
// In this example, the storage account name is "chilkat".
llSuccess = loRest.Connect("chilkat.blob.core.windows.net",lnPort,llBTls,llBAutoReconnect)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    return
endif

// Provide Azure Cloud credentials for the REST call.
loAzAuth = createobject("CkAuthAzureStorage")
loAzAuth.AccessKey = "AZURE_ACCESS_KEY"
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
loAzAuth.Account = "chilkat"
loAzAuth.Scheme = "SharedKey"
loAzAuth.Service = "Blob"
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
loAzAuth.XMsVersion = "2021-08-06"
llSuccess = loRest.SetAuthAzureStorage(loAzAuth)

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

// As the blocks are uploaded, we'll keep an XML block list for the subsequent commit..
loXml = createobject("CkXml")
loXml.Tag = "BlockList"

// Any type of file can be uploaded in this way.  It can a text file, binary file, anything...
// This example will upload an XML file that is approximately 275K in size.  It can be downloaded
// at http://www.chilkatsoft.com/hamlet.xml
loFac = createobject("CkFileAccess")
llSuccess = loFac.OpenForRead("qa_data/xml/hamlet.xml")
// Assuming success for the example..

// We'll upload in 16K blocks (normally a program would upload in larger block sizes than this,
// but this is just an example...)
lnBlockSize = 16384

// How many 16K blocks?  (Including 1 for the last partial block)
lnNumBlocks = loFac.GetNumBlocks(lnBlockSize)

loCrypt = createobject("CkCrypt2")
loCrypt.HashAlgorithm = "md5"

loSbResponseBody = createobject("CkStringBuilder")
loUriPath = createobject("CkStringBuilder")

loDataBlock = createobject("CkBinData")

i = 0
do while i < lnNumBlocks

    loDataBlock.Clear()
    llSuccess = loFac.ReadBlockBd(i,lnBlockSize,loDataBlock)
    if (llSuccess = .F.) then
        ? loFac.LastErrorText
        release loRest
        release loAzAuth
        release loXml
        release loFac
        release loCrypt
        release loSbResponseBody
        release loUriPath
        release loDataBlock
        return
    endif

    // Generate a base64 block ID.  
    // (Chilkat provides a helper method named GenBlockId to make this easy)
    // A pre-base64 encoded block ID length of 4 is sufficient in this case because
    // this file certainly won't have more than 99,999 blocks..
    lcBlockId = loFac.GenBlockId(i,4,"base64")

    // Add this blockId to the list of blocks to be committed.
    loXml.NewChild2("Latest",lcBlockId)

    // Build the URI path
    loUriPath.Clear()
    llSuccess = loUriPath.Append("/mycontainer/hamlet.xml?comp=block&blockId=")
    llSuccess = loUriPath.Append(lcBlockId)

    lcContentMd5 = loCrypt.HashBdENC(loDataBlock)
    loRest.AddHeader("Content-MD5",lcContentMd5)

    // Upload this block..
    loSbResponseBody.Clear()
    llSuccess = loRest.FullRequestBd("PUT",loUriPath.GetAsString(),loDataBlock,loSbResponseBody)
    if (llSuccess = .F.) then
        ? loRest.LastErrorText
        release loRest
        release loAzAuth
        release loXml
        release loFac
        release loCrypt
        release loSbResponseBody
        release loUriPath
        release loDataBlock
        return
    endif

    // Verify that we received a 201 status code.
    if (loRest.ResponseStatusCode <> 201) then
        // Examine the request/response to see what happened.
        ? "response status code = " + str(loRest.ResponseStatusCode)
        ? "response status text = " + loRest.ResponseStatusText
        ? "response header: " + loRest.ResponseHeader
        ? "response body (if any): " + loSbResponseBody.GetAsString()
        ? "---"
        ? "LastRequestStartLine: " + loRest.LastRequestStartLine
        ? "LastRequestHeader: " + loRest.LastRequestHeader
        release loRest
        release loAzAuth
        release loXml
        release loFac
        release loCrypt
        release loSbResponseBody
        release loUriPath
        release loDataBlock
        return
    endif

    i = i + 1
enddo

loFac.FileClose()

// Now commit the blocks.
// Let's have a look at the XML that will commit the blocks:
lcXmlStr = loXml.GetXml()
? lcXmlStr

// The XML will look like this:

// <?xml version="1.0" encoding="utf-8" ?>
// <BlockList>
//     <Latest>MDAwMA==</Latest>
//     <Latest>MDAwMQ==</Latest>
//     <Latest>MDAwMg==</Latest>
//     <Latest>MDAwMw==</Latest>
//     <Latest>MDAwNA==</Latest>
//     <Latest>MDAwNQ==</Latest>
//     <Latest>MDAwNg==</Latest>
//     <Latest>MDAwNw==</Latest>
//     <Latest>MDAwOA==</Latest>
//     <Latest>MDAwOQ==</Latest>
//     <Latest>MDAxMA==</Latest>
//     <Latest>MDAxMQ==</Latest>
//     <Latest>MDAxMg==</Latest>
//     <Latest>MDAxMw==</Latest>
//     <Latest>MDAxNA==</Latest>
//     <Latest>MDAxNQ==</Latest>
//     <Latest>MDAxNg==</Latest>
//     <Latest>MDAxNw==</Latest>
// </BlockList>

// --------------------------------------------------------------------------
// IMPORTANT: Remove the Content-MD5 header previously set in the loop above.
// --------------------------------------------------------------------------
loRest.RemoveHeader("Content-MD5")

// Send the PUT Block List...
lcResponseStr = loRest.FullRequestString("PUT","/mycontainer/hamlet.xml?comp=blocklist",lcXmlStr)
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    release loAzAuth
    release loXml
    release loFac
    release loCrypt
    release loSbResponseBody
    release loUriPath
    release loDataBlock
    return
endif

// When successful, the Azure Storage service will respond with a 201 response status code,
// with no response body.

if (loRest.ResponseStatusCode <> 201) then
    // Examine the request/response to see what happened.
    ? "response status code = " + str(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body (if any): " + lcResponseStr
    ? "---"
    ? "LastRequestStartLine: " + loRest.LastRequestStartLine
    ? "LastRequestHeader: " + loRest.LastRequestHeader
    release loRest
    release loAzAuth
    release loXml
    release loFac
    release loCrypt
    release loSbResponseBody
    release loUriPath
    release loDataBlock
    return
endif

? "Success."


release loRest
release loAzAuth
release loXml
release loFac
release loCrypt
release loSbResponseBody
release loUriPath
release loDataBlock

 

© 2000-2024 Chilkat Software, Inc. All Rights Reserved.