(Objective-C) SOAP with MTOM XOP 8bit (binary) Attachment

Demonstrates how to send the following sample SOAP request with an MTOM/XOP attachment:

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: _LT_5aeaa450-17f0-4484-b845-a8480c363444@example.org_GT_
Content-Disposition: 8bit

... binary data ...

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#import <CkoHttp.h>
#import <CkoXml.h>
#import <NSString.h>
#import <CkoHttpRequest.h>
#import <CkoHttpResponse.h>

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

CkoHttp *http = [[CkoHttp alloc] init];

CkoXml *soapXml = [[CkoXml alloc] init];

soapXml.Tag = @"soap:Envelope";
BOOL success = [soapXml AddAttribute: @"xmlns:soap" value: @"http://schemas.xmlsoap.org/soap/envelope/"];

[soapXml NewChild2: @"soap:Body" content: @""];
success = [soapXml GetChild2: [NSNumber numberWithInt: 0]];

[soapXml NewChild2: @"Detail" content: @""];
success = [soapXml GetChild2: [NSNumber numberWithInt: 0]];
success = [soapXml AddAttribute: @"xmlns" value: @"http://example.org/mtom/data"];

[soapXml NewChild2: @"image" content: @""];
success = [soapXml GetChild2: [NSNumber numberWithInt: 0]];

[soapXml NewChild2: @"xop:Include" content: @""];
success = [soapXml GetChild2: [NSNumber numberWithInt: 0]];
success = [soapXml AddAttribute: @"xmlns:xop" value: @"http://www.w3.org/2004/08/xop/include"];
success = [soapXml AddAttribute: @"href" value: @"cid:5aeaa450-17f0-4484-b845-a8480c363444@example.org"];

[soapXml GetRoot2];
soapXml.EmitXmlDecl = NO;

NSString *xmlBody = [soapXml GetXml];
NSLog(@"%@",xmlBody);

CkoHttpRequest *req = [[CkoHttpRequest alloc] init];
req.HttpVerb = @"POST";
req.Path = @"/something/someTarget";

req.ContentType = @"multipart/related; start-info=\"text/xml\"; type=\"application/xop+xml\"";
[req AddHeader: @"SOAPAction" value: @"some-SOAP-action"];

success = [req AddStringForUpload2: @"" filename: @"" strData: xmlBody charset: @"utf-8" contentType: @"application/xop+xml; type=\"text/xml\"; charset=utf-8"];

// The bytes will be sent as binary (not base64 encoded).
success = [req AddFileForUpload2: @"" path: @"qa_data/jpg/starfish.jpg" contentType: @"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: [NSNumber numberWithInt: 1] name: @"Content-ID" value: @"<5aeaa450-17f0-4484-b845-a8480c363444@example.org>"];

// Add the Content-Disposition: 8bit sub-header
success = [req AddSubHeader: [NSNumber numberWithInt: 1] name: @"Content-Disposition" value: @"8bit"];

http.FollowRedirects = YES;

// For debugging, set the SessionLogFilename property
// to see the exact HTTP request and response in a log file.
// (Given that the request contains binary data, you'll need an editor
// that can gracefully view text + binary data.  I use EmEditor for most simple editing tasks..)
http.SessionLogFilename = @"qa_output/mtom_sessionLog.txt";

BOOL useTls = YES;
// Note: Please don't run this example without changing the domain to your own domain...
CkoHttpResponse *resp = [http SynchronousRequest: @"www.example.org" port: [NSNumber numberWithInt: 443] ssl: useTls req: req];
if (http.LastMethodSuccess == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

CkoXml *xmlResponse = [[CkoXml alloc] init];
success = [xmlResponse LoadXml: resp.BodyStr];
NSLog(@"%@",[xmlResponse GetXml]);