(.NET Core C#) 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--
// 

Chilkat.Rest rest = new Chilkat.Rest();
bool success;

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

Chilkat.Xml xml = 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.
Chilkat.BinData bd = 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.
bool bAutoReconnect = true;
success = rest.Connect("www.chilkatsoft.com",443,true,bAutoReconnect);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// 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;

string responseStr = rest.FullRequestMultipart("POST","/someTargetPath");
if (rest.LastMethodSuccess != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// 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..)
Chilkat.BinData bdRequest = new Chilkat.BinData();
rest.GetLastDebugRequest(bdRequest);
success = bdRequest.WriteFile("qa_output/multipartRelatedRequest.bin");

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