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VB.NET

Send a REST Request with a Binary Body

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Demonstrates Rest.FullRequestBd, which sends a complete request whose binary body is read from a BinData and stores the text response body in a StringBuilder.

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. FullRequestBd is used when the request payload is binary, such as an image or other file, while the response is textual (for example a JSON acknowledgement).

Chilkat VB.NET Downloads

VB.NET
Dim success As Boolean = False

Dim rest As New Chilkat.Rest
Dim bTls As Boolean = True
Dim bAutoReconnect As Boolean = True
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
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.

'  FullRequestBd sends a request whose binary body is read from a BinData and stores the text
'  response body in a StringBuilder.
Dim bdRequest As New Chilkat.BinData
Dim bLoaded As Boolean = bdRequest.LoadFile("qa_data/image.png")
If (bLoaded <> True) Then
    Debug.WriteLine("Failed to load the request body file.")
    Exit Sub
End If


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

Dim sbResponse As New Chilkat.StringBuilder
success = rest.FullRequestBd("PUT","/api/images/1",bdRequest,sbResponse)
If (success = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


Dim responseText As String = sbResponse.GetAsString()
If (sbResponse.LastMethodSuccess = False) Then
    Debug.WriteLine(sbResponse.LastErrorText)
    Exit Sub
End If

Debug.WriteLine(responseText)