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VB.NET

Send a REST Request with a Streamed Body

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Demonstrates Rest.FullRequestStream, which sends a complete request whose body is read from a Stream, then returns the response body as text.

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. Streaming the body is appropriate for large uploads because the data is read incrementally from the source (here a file) rather than being held entirely in memory.

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.

'  The request body is read from a Stream.  Here the stream's source is a local file, which is
'  appropriate for large uploads because the data need not be held entirely in memory.
Dim bodyStream As New Chilkat.Stream
bodyStream.SourceFile = "qa_data/upload.json"

rest.AddHeader("Content-Type","application/json")

'  The 3rd argument is the Stream that supplies the request body.
Dim responseText As String = rest.FullRequestStream("POST","/api/upload",bodyStream)
If (rest.LastMethodSuccess = False) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If

Debug.WriteLine(responseText)