(AutoIt) REST Stream Multipart Body from File

Demonstrates how to send a multipart/form-data HTTP request, where one of the parts contains data streamed directly from a file. This is good for cases where the file to be uploaded is very large.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

$oRest = ObjCreate("Chilkat.Rest")

; Connect to the destination web server.
Local $bTls = True
Local $iPort = 443
Local $bAutoReconnect = True
Local $bSuccess = $oRest.Connect("www.somewebserver.com",$iPort,$bTls,$bAutoReconnect)

; This example will send the following multipart/form-data request.
; The Content-Length is automatically computed and added by Chilkat.

; 	POST /some_path HTTP/1.1
; 	Content-Type: multipart/form-data; boundary=---------------------------735323031399963166993862150
; 	Content-Length: 834
; 
; 	-----------------------------735323031399963166993862150
; 	Content-Disposition: form-data; name="text1"
; 
; 	text 123 abc
; 	-----------------------------735323031399963166993862150
; 	Content-Disposition: form-data; name="text2"
; 
; 	xyz
; 	-----------------------------735323031399963166993862150
; 	Content-Disposition: form-data; name="file1"; filename="a.txt"
; 	Content-Type: text/plain
; 
; 	Content of a.txt.
; 
; 	-----------------------------735323031399963166993862150
; 	Content-Disposition: form-data; name="file2"; filename="a.html"
; 	Content-Type: text/html
; 
; 	<!DOCTYPE html><title>Content of a.html.</title>
; 
; 	-----------------------------735323031399963166993862150
; 	Content-Disposition: form-data; name="file3"; filename="starfish.jpg"
; 	Content-Type: image/jpeg
; 
; 	binary data goes here
; 	-----------------------------735323031399963166993862150--

; Set the Content-Type for the topmost MIME part.
$oRest.AddHeader("Content-Type","multipart/form-data")

; Specify each part of the request.
$oRest.PartSelector = "1"
$oRest.AddHeader("Content-Disposition","form-data; name=""text1""")
$oRest.SetMultipartBodyString("text 123 abc")

$oRest.PartSelector = "2"
$oRest.AddHeader("Content-Disposition","form-data; name=""text2""")
$oRest.SetMultipartBodyString("xyz")

$oRest.PartSelector = "3"
$oRest.AddHeader("Content-Disposition","form-data; name=""file1""; filename=""a.txt""")
$oRest.AddHeader("Content-Type","text/plain")
$oRest.SetMultipartBodyString("Content of a.txt.")

$oRest.PartSelector = "4"
$oRest.AddHeader("Content-Disposition","form-data; name=""file2""; filename=""a.html""")
$oRest.AddHeader("Content-Type","text/html")
$oSbHtml = ObjCreate("Chilkat.StringBuilder")
$oSbHtml.LoadFile("qa_data/html/a.html","utf-8")
$oRest.SetMultipartBodySb($oSbHtml)

$oRest.PartSelector = "5"
$oRest.AddHeader("Content-Disposition","form-data; name=""file3""; filename=""starfish.jpg""")
$oRest.AddHeader("Content-Type","image/jpeg")

; When the request is sent, stream this part directly from the file.
; This avoids having to load the entire file into memory.
$oFileStream = ObjCreate("Chilkat.Stream")
$oFileStream.SourceFile = "qa_data/jpg/starfish.jpg"
$oRest.SetMultipartBodyStream($oFileStream)

Local $sResponseBody = $oRest.FullRequestMultipart("POST","/some_path")
If ($oRest.LastMethodSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

; ...
; ...

; Clear the REST object for any subsequent requests..
$oRest.ClearAllHeaders()
$oRest.ClearAllParts()
$oRest.PartSelector = ""