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(C#) How to Access Parts of a multipart/related HTTP ResponseDemonstrates 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 ...
// This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.Http http = new Chilkat.Http(); Chilkat.Xml soapXml = new 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> soapXml.Tag = "soap:Envelope"; soapXml.AddAttribute("xmlns:soap","http://schemas.xmlsoap.org/soap/envelope/"); soapXml.UpdateAttrAt("soap:Body|Detail",true,"xmlns","http://example.org/mtom/data"); soapXml.UpdateAttrAt("soap:Body|Detail|image|xop:Include",true,"xmlns:xop","http://www.w3.org/2004/08/xop/include"); soapXml.UpdateAttrAt("soap:Body|Detail|image|xop:Include",true,"href","cid:5aeaa450-17f0-4484-b845-a8480c363444@example.org"); soapXml.EmitXmlDecl = false; string xmlBody = soapXml.GetXml(); Debug.WriteLine(xmlBody); Chilkat.HttpRequest req = new Chilkat.HttpRequest(); req.HttpVerb = "POST"; req.Path = "/something/someTarget"; req.ContentType = "multipart/related; start-info=\"text/xml\"; type=\"application/xop+xml\""; req.AddHeader("SOAPAction","some-SOAP-action"); success = req.AddStringForUpload2("","",xmlBody,"utf-8","application/xop+xml; type=\"text/xml\"; charset=utf-8"); // The bytes will be sent as binary (not base64 encoded). success = req.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) success = req.AddSubHeader(1,"Content-ID","<5aeaa450-17f0-4484-b845-a8480c363444@example.org>"); http.FollowRedirects = true; bool useTls = true; Chilkat.HttpResponse resp = http.SynchronousRequest("www.example.org",443,useTls,req); if (http.LastMethodSuccess != true) { Debug.WriteLine(http.LastErrorText); return; } // 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. Chilkat.Mime mime = new Chilkat.Mime(); mime.LoadMime(resp.FullMime); // Your code might verify that the Content-Type is indeed multipart/related. Debug.WriteLine(mime.ContentType); Debug.WriteLine("num parts = " + Convert.ToString(mime.NumParts)); // Assuming it is, and the number of sub-parts is > 0 if (mime.NumParts > 0) { Chilkat.Mime part0 = mime.GetPart(0); // The Content-Type (in this ficticious example) should be "application/xop+xml" Debug.WriteLine("sub-part Content-Type: " + part0.ContentType); // Now get the XML string subPartXmlBody = part0.GetBodyDecoded(); Debug.WriteLine(subPartXmlBody); } |
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