(Objective-C) PEPPOL Document Validation

Demonstrates how to call a Web service to validate your PEPPOL documents according to the latest PEPPOL rules. The validation service requires UBL files.

For more information, see https://peppol.helger.com/public/locale-en_US/menuitem-validation-ws2

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#import <CkoHttp.h>
#import <CkoStringBuilder.h>
#import <CkoXml.h>
#import <CkoHttpResponse.h>

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

// --------------------------------------------------------------------------------
// Also see Chilkat's Online WSDL Code Generator
// to generate code and SOAP Request and Response XML for each operation in a WSDL.
// --------------------------------------------------------------------------------

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

// We are sending the following POST:

// POST /wsdvs HTTP/1.1
// Host: peppol.helger.com
// Content-Type: application/soap+xml; charset=utf-8
// Content-Length: <length>
// 
// <?xml version="1.0"?>
// <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
// <S:Body>
// <validateRequestInput xmlns="http://peppol.helger.com/ws/documentvalidationservice/201701/" VESID="eu.peppol.bis2:t10:3.3.0" displayLocale="en">
// <XML>...ENTITY_ENCODED_INVOICE_XML_GOES_HERE...</XML>
// </validateRequestInput>
// </S:Body>
// </S:Envelope>

// Build the SOAP XML shown above.
// First load the PEPPOL invoice that will be the data contained in the <XML>...</XML> SOAP element.
// We are using the XML invoice obtained from https://github.com/austriapro/ebinterface-standards/blob/master/schemas/ebInterface5p0/samples/ebinterface_5p0_sample_ecosio.xml
CkoStringBuilder *sbPeppolInvoiceXml = [[CkoStringBuilder alloc] init];
BOOL success = [sbPeppolInvoiceXml LoadFile: @"qa_data/xml/peppol_invoice.xml" charset: @"utf-8"];

CkoXml *xml = [[CkoXml alloc] init];
xml.Tag = @"S:Envelope";
[xml AddAttribute: @"xmlns:S" value: @"http://schemas.xmlsoap.org/soap/envelope/"];
[xml UpdateAttrAt: @"S:Body|validateRequestInput" autoCreate: YES attrName: @"xmlns" attrValue: @"http://peppol.helger.com/ws/documentvalidationservice/201701/"];
[xml UpdateAttrAt: @"S:Body|validateRequestInput" autoCreate: YES attrName: @"VESID" attrValue: @"at.ebinterface:invoice:5.0"];
[xml UpdateAttrAt: @"S:Body|validateRequestInput" autoCreate: YES attrName: @"displayLocale" attrValue: @"en"];
[xml UpdateChildContent: @"S:Body|validateRequestInput|XML" value: [sbPeppolInvoiceXml GetAsString]];

// Set the Content-Type of the request.
[http SetRequestHeader: @"Content-Type" value: @"text/xml"];

// We don't need to specify the Content-Length or Host headers.  Chilkat automatically adds them.

// Send the request...
CkoHttpResponse *resp = [http PostXml: @"https://peppol.helger.com/wsdvs" xmlDoc: [xml GetXml] charset: @"utf-8"];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

NSLog(@"%@%d",@"Response Status Code = ",[resp.StatusCode intValue]);

CkoXml *respXml = [[CkoXml alloc] init];
[respXml LoadXml: resp.BodyStr];

NSLog(@"%@",@"Response XML:");
NSLog(@"%@",[respXml GetXml]);

// A success repsonse looks like this:

// <?xml version="1.0" encoding="UTF-8"?>
// <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/">
//     <S:Body>
//         <validateResponseOutput xmlns="http://peppol.helger.com/ws/documentvalidationservice/201701/" success="true" interrupted="false" mostSevereErrorLevel="SUCCESS">
//             <Result success="true" artifactType="xsd" artifactPath="/schemas/ebinterface/ebinterface-5.0.xsd"/>
//         </validateResponseOutput>
//     </S:Body>
// </S:Envelope>