(VB.NET) Send SOAP multipart/related with XML Body and Zip Attachment

Demonstrates how to construct and send a multipart/related POST containing a SOAP XML body and a binary zip attachment.

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

' This example constructs and sends the following HTTP request.
' (The boundary strings will be different and auto-generated by Chilkat)

' Accept-Encoding: gzip,deflate
' SOAPAction: invio
' Content-Type: Multipart/Related; boundary="MIME_boundary"; type="text/xml"; start="mailto:rootpart@soapui.org"
' MIME-Version: 1.0
' 
' --MIME_boundary
' Content-Type: text/xml; charset=UTF-8
' Content-Transfer-Encoding: 8bit
' Content-ID: <rootpart@soapui.org>
'  
' <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:attachment.ws.it">
' <soapenv:Header/>
' <soapenv:Body>
'   <urn:inputBean>
'    <nomeFileAllegato>myfile.zip</nomeFileAllegato>
'   </urn:inputBean>
' </soapenv:Body>
' </soapenv:Envelope>
'  
' --MIME_boundary
' Content-Type: application/zip
' Content-Transfer-Encoding: binary
' Content-ID: <myfile.zip>
' Content-Disposition: attachment; name="myfile.zip"; filename="myfile.zip"
' 
' ... binary zip data goes here ...
' --MIME_boundary--
' 

Dim rest As New Chilkat.Rest
Dim success As Boolean

rest.AddHeader("Accept-Encoding","gzip,deflate")
rest.AddHeader("SOAPAction","invio")
rest.AddHeader("Content-Type","Multipart/Related; boundary=""MIME_boundary""; type=""text/xml""; start=""mailto:rootpart@soapui.org""")
rest.AddHeader("MIME-Version","1.0")

' Build the SOAP XML:
' Use this online tool to generate the code from sample XML: 
' Generate Code to Create XML

Dim xml As New Chilkat.Xml
xml.Tag = "soapenv:Envelope"
xml.AddAttribute("xmlns:soapenv","http://schemas.xmlsoap.org/soap/envelope/")
xml.AddAttribute("xmlns:urn","urn:attachment.ws.it")
xml.UpdateChildContent("soapenv:Header","")
xml.UpdateChildContent("soapenv:Body|urn:inputBean|nomeFileAllegato","myfile.zip")

' Build the SOAP XML sub-part
rest.PartSelector = "1"
rest.AddHeader("Content-Type","text/xml; charset=UTF-8")
rest.AddHeader("Content-Transfer-Encoding","8bit")
rest.AddHeader("Content-ID","<rootpart@soapui.org>")
success = rest.SetMultipartBodyString(xml.GetXml())

' Build the sub-part containing the .zip
rest.PartSelector = "2"
rest.AddHeader("Content-Type","application/zip")
rest.AddHeader("Content-Transfer-Encoding","binary")
rest.AddHeader("Content-ID","<myfile.zip>")
rest.AddHeader("Content-Disposition","attachment; name=""myfile.zip""; filename=""myfile.zip""")

' Add a zip file to the 2nd sub-part body.
' This example will load the .zip file into memory, but it is also possible to stream directly from the file as the request is sent
' by calling SetMultipartBodyStream.
Dim bd As New Chilkat.BinData
success = bd.LoadFile("qa_data/zips/helloWorld.zip")
success = rest.SetMultipartBodyBd(bd)

' To be safe, always revert the PartSelector back to 0..
rest.PartSelector = "0"


' Send the request by connecting to the web server and then sending..
' Connect using TLS.
Dim bAutoReconnect As Boolean = True
success = rest.Connect("www.chilkatsoft.com",443,True,bAutoReconnect)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' In this example, we're setting DebugMode.
' When debug mode is turned on, no request is actually sent.
' Instead, the request that would be sent is recorded to memory
' and we can retrieve it afterwards..
rest.DebugMode = True

Dim responseStr As String = rest.FullRequestMultipart("POST","/someTargetPath")
If (rest.LastMethodSuccess <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If


' Retrieve the request that would've been sent and save it to a file.
' We can then examine the file to see if the request was structured as we desired.
' (Note: The zip bytes will be binary data and will appear as garbled garbage in a text editor..)
Dim bdRequest As New Chilkat.BinData
rest.GetLastDebugRequest(bdRequest)
success = bdRequest.WriteFile("qa_output/multipartRelatedRequest.bin")

Debug.WriteLine("OK, examine the output file..")