Chilkat Examples

ChilkatHOMEAndroid™Classic ASPCC++C#C# UWP/WinRTDataFlexDelphi ActiveXDelphi DLLVisual FoxProJavaLianjaMFCObjective-CPerlPHP ActiveXPHP ExtensionPowerBuilderPowerShellPureBasicPythonRubySQL ServerSwiftTclUnicode CUnicode C++Visual Basic 6.0VB.NETVB.NET UWP/WinRTVBScriptXojo PluginNode.js

Visual Basic 6.0 Examples

Async
Certificates
ECC
Email Object
Encryption
FTP
HTML-to-XML/Text
Gzip
HTTP
IMAP
JSON
MHT / HTML Email
PEM
PFX/P12
Java KeyStore (JKS)
POP3
RSA Encryption
MIME
REST
SCP
SMTP
Socket/SSL/TLS
SSH Key
SSH
SFTP
Stream
Tar Archive
XML
XMP
Zip

More Examples...
Google APIs
Google Cloud Storage
Azure Cloud Storage
Amazon S3 (new)
Google Drive
ASN.1
PRNG
Amazon S3
Bounced Email
CSV
Diffie-Hellman
DKIM / DomainKey
DSA
NTLM
QuickBooks

 

 

 

 

 

 

 

(Visual Basic 6.0) Lower-Level REST API Methods (Google Cloud Storage)

The FullRequest* methods, such as FullRequestBinary, FullRequestMultipart, FullRequestNoBody, FullRequestStream, FullRequestString, etc. are high-level REST API methods that both send the request and receive the response. It is often the case that an application needs make a REST call, but with a finer level of control. The Chilkat REST API provides this feature. An application can break a REST call into the following parts:

  1. Send the HTTP request. (via the SendReq* methods)
  2. Receive the HTTP response header. (ReadResponseHeader)
  3. Receive the HTTP response body. (via the ReadRespBody* methods)

This example demonstrates a REST call using SendReqStringBody, ReadResonseHeader, and ReadRespBodyString.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

'  This example demonstrates a REST call using SendReqStringBody, ReadResonseHeader, and ReadRespBodyString.
'  It will create a bucket in Google Cloud Storage.
Dim success As Long

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

Dim gAuth As New ChilkatAuthGoogle
'  Obtain an access token as shown in one of the following examples:
'  See Get Access Token using a Service Account JSON Key
'  See Get Access Token using a P12 File

Dim rest As New ChilkatRest

'  Connect using TLS.
Dim bAutoReconnect As Long
bAutoReconnect = 1
success = rest.Connect("www.googleapis.com",443,1,bAutoReconnect)

'  Provide the authentication credentials (i.e. the access key)
success = rest.SetAuthGoogle(gAuth)

'  Build the JSON request body for creating a bucket.
'  The only required property is the "name", but we'll add more
'  to make a better example..
Dim jsonReqBody As New ChilkatJsonObject
success = jsonReqBody.AddStringAt(-1,"name","chilkat-bucket-c")
success = jsonReqBody.AddStringAt(-1,"kind","storage#bucket")
success = jsonReqBody.AddStringAt(-1,"location","US")
success = jsonReqBody.AddObjectAt(-1,"versioning")

Dim pObjVersioning As ChilkatJsonObject
Set pObjVersioning = jsonReqBody.ObjectOf("versioning")
success = pObjVersioning.AddBoolAt(-1,"enabled",1)

'  Show the HTTP request body we'll be sending.
Text1.Text = Text1.Text & jsonReqBody.Emit() & vbCrLf

'  Add the required query parameter.
'  See https://cloud.google.com/storage/docs/json_api/v1/buckets/insert
success = rest.AddQueryParam("project","chilkattest-1050")

'  Add the Content-Type HTTP request header.
success = rest.AddHeader("Content-Type","application/json; charset=UTF-8")

'  Send the REST HTTP request.
success = rest.SendReqStringBody("POST","/storage/v1/b",jsonReqBody.Emit())
If (success <> 1) Then
    Text1.Text = Text1.Text & rest.LastErrorText & vbCrLf
    Exit Sub
End If

'  Read the response header.
Dim responseStatusCode As Long
responseStatusCode = rest.ReadResponseHeader()
If (responseStatusCode < 0) Then
    '  We were unable to receive the response header.
    Text1.Text = Text1.Text & rest.LastErrorText & vbCrLf
    Exit Sub
End If

If (responseStatusCode <> 200) Then
    '  The response was not successful.  We'll still need to receive
    '  the response body, which may contain an error message from the server.
    '  If the response has no body, then the method for reading the
    '  response body can still be called.  It will simply return with an empty
    '  response body.

    '  We can examine the response header and status text:
    Text1.Text = Text1.Text & "Response status text: " & rest.ResponseStatusText & vbCrLf
    Text1.Text = Text1.Text & "Response header: " & rest.ResponseHeader & vbCrLf
End If

'  Read the response body.  In this case we're expecting it to be JSON..
Dim responseBodyStr As String
responseBodyStr = rest.ReadRespBodyString()
If (rest.LastMethodSuccess <> 1) Then
    '  We were unable to receive the response body.
    '  Note: If the response did not include a body (such as for cases where
    '  the Content-Length header is 0, or if the response status code implicitly
    '  indicates no body, then ReadRespBodyString returns cktrue, and the
    '  responseBodyString will be an empty string.
    Text1.Text = Text1.Text & rest.LastErrorText & vbCrLf
    Exit Sub
End If

'  Show the JSON response.
Text1.Text = Text1.Text & "Json Response: " & responseBodyStr & vbCrLf

 

© 2000-2016 Chilkat Software, Inc. All Rights Reserved.