Xbase++ Requires Chilkat v11.0.0+

How to Access Parts of a multipart/related HTTP Response

See more HTTP Examples

Demonstrates how to access the parts of a multipart/related response. This example sends a ficticious multipart/related request, and handles a ficticious multipart/related response.

We send the following multipart/related request:

Content-Type: multipart/related; start-info="text/xml"; type="application/xop+xml"; boundary="----=_Part_0_1744155.1118953559416"
Content-Length: 3453
SOAPAction: "some-SOAP-action"

------=_Part_1_4558657.1118953559446
Content-Type: application/xop+xml; type="text/xml"; charset=utf-8

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <Detail xmlns="http://example.org/mtom/data">
      <image>
        <xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:5aeaa450-17f0-4484-b845-a8480c363444@example.org" />
      </image>
    </Detail>
  </soap:Body>
</soap:Envelope>

------=_Part_1_4558657.1118953559446
Content-Type: image/jpeg
Content-ID: <5aeaa450-17f0-4484-b845-a8480c363444@example.org>


... binary data ...

Xbase++

LOCAL nSuccess
LOCAL oHttp
LOCAL oSoapXml
LOCAL cXmlBody
LOCAL oReq
LOCAL nUseTls
LOCAL oResp
LOCAL oMime
LOCAL oPart0
LOCAL cSubPartXmlBody

nSuccess := 0

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

oHttp := CreateObject("Chilkat.Http")

oSoapXml := CreateObject("Chilkat.Xml")

//  Build the following SOAP XML

//  <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
//    <soap:Body>
//      <Detail xmlns="http://example.org/mtom/data">
//        <image>
//          <xop:Include xmlns:xop="http://www.w3.org/2004/08/xop/include" href="cid:5aeaa450-17f0-4484-b845-a8480c363444@example.org" />
//        </image>
//      </Detail>
//    </soap:Body>
//  </soap:Envelope>

oSoapXml:Tag := "soap:Envelope"
oSoapXml:AddAttribute("xmlns:soap", "http://schemas.xmlsoap.org/soap/envelope/")
oSoapXml:UpdateAttrAt("soap:Body|Detail", 1, "xmlns", "http://example.org/mtom/data")
oSoapXml:UpdateAttrAt("soap:Body|Detail|image|xop:Include", 1, "xmlns:xop", "http://www.w3.org/2004/08/xop/include")
oSoapXml:UpdateAttrAt("soap:Body|Detail|image|xop:Include", 1, "href", "cid:5aeaa450-17f0-4484-b845-a8480c363444@example.org")

oSoapXml:EmitXmlDecl := 0
cXmlBody := oSoapXml:GetXml()
? cXmlBody

oReq := CreateObject("Chilkat.HttpRequest")
oReq:HttpVerb := "POST"
oReq:Path := "/something/someTarget"

oReq:ContentType := 'multipart/related; start-info="text/xml"; type="application/xop+xml"'
oReq:AddHeader("SOAPAction", "some-SOAP-action")

nSuccess := oReq:AddStringForUpload2("", "", cXmlBody, "utf-8", 'application/xop+xml; type="text/xml"; charset=utf-8')

//  The bytes will be sent as binary (not base64 encoded).
nSuccess := oReq:AddFileForUpload2("", "qa_data/jpg/starfish.jpg", "image/jpeg")

//  The JPEG data is the 2nd sub-part, and therefore is at index 1 (the first sub-part is at index 0)
nSuccess := oReq:AddSubHeader(1, "Content-ID", "<5aeaa450-17f0-4484-b845-a8480c363444@example.org>")

oHttp:FollowRedirects := 1

nUseTls := 1
oResp := CreateObject("Chilkat.HttpResponse")
nSuccess := oHttp:HttpSReq("www.example.org", 443, nUseTls, oReq, oResp)
IF (nSuccess == 0)
    ? oHttp:LastErrorText
    oHttp:destroy()
    oSoapXml:destroy()
    oReq:destroy()
    oResp:destroy()
    RETURN
ENDIF

//  Imagine the HTTP response is multipart related and is something like this:

//  HTTP/1.1 200 OK
//  Cache-Control: no-cache, no-store
//  Pragma: no-cache
//  Transfer-Encoding: chunked
//  Content-Type: multipart/related; boundary=------------080001080500020607080905
//  Expires: -1
//  Server: Microsoft-IIS/10.0
//  X-AspNet-Version: 4.0.30319
//  X-Powered-By: ASP.NET
//  Date: Wed, 19 Feb 2020 15:27:06 GMT
//  
//  --------------080001080500020607080905
//  Content-Type: application/xop+xml; charset=iso-8859-1
//  Content-Id: RootPart
//  Content-Transfer-Encoding: binary
//  
//  <?xml version="1.0" encoding="iso-8859-1"?>
//  <soapenv:Envelope xmlns:xcpt="...">
//    <soapenv:Header />
//    <soapenv:Body>
//      <xres:Transport profile="http://something.example.com/..." version="1.4">
//        <xres:TransportHeader>
//  	...
//  	...
//        </xres:TransportHeader>
//        <xres:TransportBody />
//      </xres:Transport>
//    </soapenv:Body>
//  </soapenv:Envelope>
//  --------------080001080500020607080905--

//  To get the XML, load the full MIME of the response into a Chilkat MIME object.  Then get the body of the 1st sub-part.
oMime := CreateObject("Chilkat.Mime")
oMime:LoadMime(oResp:FullMime)

//  Your code might verify that the Content-Type is indeed multipart/related.
? oMime:ContentType
? "num parts = " + Str(oMime:NumParts)

//  Assuming it is, and the number of sub-parts is > 0
IF (oMime:NumParts > 0)

    oPart0 := CreateObject("Chilkat.Mime")
    oMime:PartAt(0, oPart0)

    //  The Content-Type (in this ficticious example) should be "application/xop+xml"
    ? "sub-part Content-Type: " + oPart0:ContentType
    //  Now get the XML 
    cSubPartXmlBody := oPart0:GetBodyDecoded()
    ? cSubPartXmlBody
ENDIF

oHttp:destroy()
oSoapXml:destroy()
oReq:destroy()
oResp:destroy()
oMime:destroy()
oPart0:destroy()