VBScript

Send a Staged REST Request with a Binary Body

Demonstrates Rest.SendReqBd, which sends a request whose binary body is read from a BinData, then reads the response in separate steps.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

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VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

set rest = CreateObject("Chilkat.Rest")
bTls = 1
bAutoReconnect = 1
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = 0) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

'  The file paths are relative to the application's current working directory.  Absolute paths
'  may also be used.  Supply the paths appropriate to your own environment.

'  Send a request whose binary body is read from a BinData.
set bdBody = CreateObject("Chilkat.BinData")
bLoaded = bdBody.LoadFile("qa_data/image.png")
If (bLoaded <> 1) Then
    outFile.WriteLine("Failed to load the request body file.")
    WScript.Quit
End If

success = rest.AddHeader("Content-Type","image/png")

success = rest.SendReqBd("PUT","/api/images/1",bdBody)
If (success = 0) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

'  After sending, read the response status line and header fields.  The return value is the HTTP
'  status code, or -1 if no response was received.
statusCode = rest.ReadResponseHeader()
If (statusCode < 0) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine("Response status code: " & statusCode)

'  Read the response body as text.
responseBody = rest.ReadRespBodyString()
If (rest.LastMethodSuccess = 0) Then
    outFile.WriteLine(rest.LastErrorText)
    WScript.Quit
End If

outFile.WriteLine(responseBody)

outFile.Close