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(Unicode 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 ...
#include <C_CkHttpW.h> #include <C_CkXmlW.h> #include <C_CkHttpRequestW.h> #include <C_CkHttpResponseW.h> #include <C_CkMimeW.h> void ChilkatSample(void) { HCkHttpW http; HCkXmlW soapXml; const wchar_t *xmlBody; HCkHttpRequestW req; BOOL useTls; HCkHttpResponseW resp; HCkMimeW mime; HCkMimeW part0; const wchar_t *subPartXmlBody; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. http = CkHttpW_Create(); soapXml = CkXmlW_Create(); // 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> CkXmlW_putTag(soapXml,L"soap:Envelope"); CkXmlW_AddAttribute(soapXml,L"xmlns:soap",L"http://schemas.xmlsoap.org/soap/envelope/"); CkXmlW_UpdateAttrAt(soapXml,L"soap:Body|Detail",TRUE,L"xmlns",L"http://example.org/mtom/data"); CkXmlW_UpdateAttrAt(soapXml,L"soap:Body|Detail|image|xop:Include",TRUE,L"xmlns:xop",L"http://www.w3.org/2004/08/xop/include"); CkXmlW_UpdateAttrAt(soapXml,L"soap:Body|Detail|image|xop:Include",TRUE,L"href",L"cid:5aeaa450-17f0-4484-b845-a8480c363444@example.org"); CkXmlW_putEmitXmlDecl(soapXml,FALSE); xmlBody = CkXmlW_getXml(soapXml); wprintf(L"%s\n",xmlBody); req = CkHttpRequestW_Create(); CkHttpRequestW_putHttpVerb(req,L"POST"); CkHttpRequestW_putPath(req,L"/something/someTarget"); CkHttpRequestW_putContentType(req,L"multipart/related; start-info=\"text/xml\"; type=\"application/xop+xml\""); CkHttpRequestW_AddHeader(req,L"SOAPAction",L"some-SOAP-action"); success = CkHttpRequestW_AddStringForUpload2(req,L"",L"",xmlBody,L"utf-8",L"application/xop+xml; type=\"text/xml\"; charset=utf-8"); // The bytes will be sent as binary (not base64 encoded). success = CkHttpRequestW_AddFileForUpload2(req,L"",L"qa_data/jpg/starfish.jpg",L"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 = CkHttpRequestW_AddSubHeader(req,1,L"Content-ID",L"<5aeaa450-17f0-4484-b845-a8480c363444@example.org>"); CkHttpW_putFollowRedirects(http,TRUE); useTls = TRUE; resp = CkHttpW_SynchronousRequest(http,L"www.example.org",443,useTls,req); if (CkHttpW_getLastMethodSuccess(http) != TRUE) { wprintf(L"%s\n",CkHttpW_lastErrorText(http)); CkHttpW_Dispose(http); CkXmlW_Dispose(soapXml); CkHttpRequestW_Dispose(req); 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. mime = CkMimeW_Create(); CkMimeW_LoadMime(mime,CkHttpResponseW_fullMime(resp)); // Your code might verify that the Content-Type is indeed multipart/related. wprintf(L"%s\n",CkMimeW_contentType(mime)); wprintf(L"num parts = %d\n",CkMimeW_getNumParts(mime)); // Assuming it is, and the number of sub-parts is > 0 if (CkMimeW_getNumParts(mime) > 0) { part0 = CkMimeW_GetPart(mime,0); // The Content-Type (in this ficticious example) should be "application/xop+xml" wprintf(L"sub-part Content-Type: %s\n",CkMimeW_contentType(part0)); // Now get the XML subPartXmlBody = CkMimeW_getBodyDecoded(part0); wprintf(L"%s\n",subPartXmlBody); CkMimeW_Dispose(part0); } CkHttpResponseW_Dispose(resp); CkHttpW_Dispose(http); CkXmlW_Dispose(soapXml); CkHttpRequestW_Dispose(req); CkMimeW_Dispose(mime); } |
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