(Unicode C++) SOAP Web Service (HTTP POST)

Demonstrates how to call PostXml to call a SOAP web service.

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#include <CkXmlW.h>
#include <CkHttpW.h>
#include <CkHttpResponseW.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat 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.
    // --------------------------------------------------------------------------------

    // This example uses a live web service at:
    // http://www.webservicex.net/uklocation.asmx
    // It gets the UK town,Postcode and County by Postcode(First Section of Post Code)

    // The SOAP XML will look like this:
    // <?xml version="1.0" encoding="utf-8"?>
    // <soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
    //   <soap:Body>
    //     <GetUKLocationByPostCode xmlns="http://www.webserviceX.NET">
    //       <PostCode>string</PostCode>
    //     </GetUKLocationByPostCode>
    //   </soap:Body>
    // </soap:Envelope>

    // For this example's sake, we'll load the XML from a file.  We'll test using PostCode "E3".  
    // The SOAP XML for this example may be downloaded from:
    // http://www.chilkatsoft.com/testData/ukPostCodeSoap.xml
    CkXmlW xml;
    bool success = xml.LoadXmlFile(L"ukPostCodeSoap.xml");
    if (success != true) {
        wprintf(L"%s\n",xml.lastErrorText());
        return;
    }

    const wchar_t *strXml = xml.getXml();

    int responseStatusCode;
    CkHttpW http;

    // We'll need to add this in the HTTP header:
    // SOAPAction: "http://www.webserviceX.NET/GetUKLocationByPostCode"
    http.SetRequestHeader(L"SOAPAction",L"http://www.webserviceX.NET/GetUKLocationByPostCode");

    // Some services expect the content-type in the HTTP header to be "application/xml" while
    // other expect text/xml.  The default sent by Chilkat is "application/xml", but this web service
    // expects "text/xml".  Therefore, change the content-type:
    http.SetRequestHeader(L"Content-Type",L"text/xml; charset=utf-8");

    // The endpoint for this soap service is:
    const wchar_t *endPoint = L"http://www.webservicex.net/uklocation.asmx";

    // Note: This particular web service was live and functioning at the time this example
    // was written.  It is possible that as time progresses, this web service will no longer
    // be availble...
    CkHttpResponseW *resp = http.PostXml(endPoint,strXml,L"utf-8");
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        wprintf(L"LastHeader:\n");
        wprintf(L"%s\n",http.lastHeader());
        return;
    }

    responseStatusCode = resp->get_StatusCode();
    // You may wish to verify that the responseStatusCode equals 200...
    wprintf(L"Response Status Code: %d\n",responseStatusCode);

    // You may examine the exact HTTP header sent with the POST like this:
    wprintf(L"LastHeader:\n");
    wprintf(L"%s\n",http.lastHeader());

    // Examine the XML returned by the web service:
    wprintf(L"XML Response:\n");
    CkXmlW xmlResp;
    xmlResp.LoadXml(resp->bodyStr());
    wprintf(L"%s\n",xmlResp.getXml());

    // Use this online tool to generate parsing code from response XML: 
    // Generate Parsing Code from XML

    delete resp;
    }