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PowerBuilder

Send a Staged Multipart REST Request

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Demonstrates Rest.SendReqMultipart, which sends a multipart request using the parts configured on the object, then reads the response in separate steps.

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.

Chilkat PowerBuilder Downloads

PowerBuilder
integer li_rc
integer li_Success
oleobject loo_Rest
integer li_BTls
integer li_BAutoReconnect
integer li_StatusCode
string ls_ResponseBody

li_Success = 0

loo_Rest = create oleobject
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")
if li_rc < 0 then
    destroy loo_Rest
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_BTls = 1
li_BAutoReconnect = 1
li_Success = loo_Rest.Connect("example.com",443,li_BTls,li_BAutoReconnect)
if li_Success = 0 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
end if

//  Configure one multipart part before sending.
loo_Rest.PartSelector = "1"
loo_Rest.AddHeader("Content-Type","text/plain")
loo_Rest.AddHeader("Content-Disposition","form-data; name=~"field1~"")
li_Success = loo_Rest.SetMultipartBodyString("value1")
if li_Success = 0 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
end if

//  Send the multipart request using the configured parts.
li_Success = loo_Rest.SendReqMultipart("POST","/api/upload")
if li_Success = 0 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
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.
li_StatusCode = loo_Rest.ReadResponseHeader()
if li_StatusCode < 0 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
end if

Write-Debug "Response status code: " + string(li_StatusCode)

//  Read the response body as text.
ls_ResponseBody = loo_Rest.ReadRespBodyString()
if loo_Rest.LastMethodSuccess = 0 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
end if

Write-Debug ls_ResponseBody


destroy loo_Rest