B4X

Send a Multipart REST Request

Demonstrates Rest.FullRequestMultipart, which sends a complete multipart request using the parts configured on the object, then returns the response body as text.

Background. Each multipart part is built by selecting it with the part selector, adding its header fields, and setting its body. FullRequestMultipart then assembles and sends all configured parts as a single multipart request.

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Dim success As Boolean = False

Dim rest As ChilkatRest
rest.Initialize("rest")
Dim bTls As Boolean = True
Dim bAutoReconnect As Boolean = True
success = rest.Connect("example.com", 443, bTls, bAutoReconnect)
If success = False Then
    Log(rest.LastErrorText)
    Return
End If


'  Configure a multipart request part before sending.  PartSelector selects the part being built,
'  and the header fields and body apply to that part.
rest.PartSelector = "1"
rest.AddHeader("Content-Type", "text/plain")
rest.AddHeader("Content-Disposition", "form-data; name=" & Chr(34) & "field1" & Chr(34))
success = rest.SetMultipartBodyString("value1")
If success = False Then
    Log(rest.LastErrorText)
    Return
End If


'  Send the multipart request using the configured parts.  The response body is returned as text.
Dim responseText As String = rest.FullRequestMultipart("POST", "/api/upload")
If rest.LastMethodSuccess = False Then
    Log(rest.LastErrorText)
    Return
End If

Log(responseText)