Unicode C++

Asynchronous HTTP SOAP 1.2 Request and Response using POST

Demonstrates a working asynchronous SOAP 1.2 request and response using POST with a live server. You may try running this example with the URLs and data provided. See http://wsf.cdyne.com/WeatherWS/Weather.asmx?op=GetCityWeatherByZIP for details.

Note: This example is correct in theory, but no longer works for live testing because the SOAP service provider (cdyne.com) has made changes or discontinued the free service.

Unicode C++

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

#include <CkHttpProgressW.h>

class httpProgress : public CkHttpProgressW {

  public:
  httpProgress() { }
  virtual ~httpProgress() { }

  void TaskCompleted(CkTaskW &completedTask) {
    //  A finished task could be one that was canceled, aborted, or truly finished.  

    //  If the task was "canceled", it was canceled prior to actually starting.  This could
    //  happen if the task was canceled while waiting in a thread pool queue to be scheduled by Chilkat's
    //  background thread pool scheduler.  

    //  If the task was "aborted", it indicates that it was canceled while running in a background thread.  
    //  The ResultErrorText will likely indicate that the task was aborted.

    //  If the task "completed", then it ran to completion, but the actual success/failure of the method
    //  is determined by the result obtained via a GetResult* method.  (A "completed" task will
    //  have a StatusInt equal to 7.   If the task finished, but was not completed, then it must've
    //  been aborted or canceled:
    if (completedTask.get_StatusInt() != 7) {
        wprintf(L"Task did not complete.\n");
        wprintf(L"task status: %s\n",completedTask.status());
        return;
    }

    //  The synchronous call to QuickGetObj would return an HTTP response object.  To get this 
    //  response object for the async call, we instantiate a new/empty HTTP response object,
    //  and then load it from the completed task.
    CkHttpResponseW resp;

    success = resp.LoadTaskResult(completedTask);
    if (success != true) {
        wprintf(L"%s\n",resp.lastErrorText());
        return;
    }

    //  Now that we have the response, we can get all of the information:

    wprintf(L"status code: %d\n",resp.get_StatusCode());
    wprintf(L"response header: %s\n",resp.header());

    CkXmlW xmlResponse;
    xmlResponse.LoadXml(resp.bodyStr());
    wprintf(L"%s\n",xmlResponse.getXml());
  }

};

void ChilkatSample(void)
    {
    bool success = false;

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

    CkHttpW http;
    httpProgress http_progress;
    http.put_EventCallbackObject(&http_progress);

    CkXmlW soapXml;

    soapXml.put_Tag(L"soap12:Envelope");
    soapXml.AddAttribute(L"xmlns:xsi",L"http://www.w3.org/2001/XMLSchema-instance");
    soapXml.AddAttribute(L"xmlns:xsd",L"http://www.w3.org/2001/XMLSchema");
    soapXml.AddAttribute(L"xmlns:soap12",L"http://www.w3.org/2003/05/soap-envelope");

    soapXml.NewChild2(L"soap12:Body",L"");
    soapXml.GetChild2(0);
    soapXml.NewChild2(L"GetCityWeatherByZIP",L"");
    soapXml.GetChild2(0);
    soapXml.AddAttribute(L"xmlns",L"http://ws.cdyne.com/WeatherWS/");
    soapXml.NewChild2(L"ZIP",L"60187");
    soapXml.GetRoot2();

    wprintf(L"%s\n",soapXml.getXml());

    CkHttpRequestW req;
    req.put_HttpVerb(L"POST");
    req.put_SendCharset(false);
    req.AddHeader(L"Content-Type",L"application/soap+xml; charset=utf-8");
    req.AddHeader(L"SOAPAction",L"http://ws.cdyne.com/WeatherWS/GetCityWeatherByZIP");
    req.put_Path(L"/WeatherWS/Weather.asmx");
    req.LoadBodyFromString(soapXml.getXml(),L"utf-8");

    http.put_FollowRedirects(true);

    CkTaskW *task = http.SynchronousRequestAsync(L"wsf.cdyne.com",80,false,req);
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    //  Schedule the task for running on the thread pool.  This changes the task's state
    //  from Inert to Live.
    success = task->Run();
    if (success != true) {
        wprintf(L"%s\n",task->lastErrorText());
        delete task;
        return;
    }

    //  The application is now free to do anything else
    //  while the HTTP request is in progress.  When the task
    //  is completed, the TaskCompleted method is called.
    delete task;

    //  -------------------------------------------------------------------------------
    //  The following is a general note that applies to all programming languages:
    //  -------------------------------------------------------------------------------

    //  NOTE: This is very important:  The TaskCompleted callback runs in the background thread.  
    //  (All callbacks from an async task, such as AbortCheck, PercentDone, ProgressInfo, etc. are in the background thread.) 
    //  An application that uses TaskCompleted must be very careful.  
    //  For example, user interface elements (such as labels, text boxes, etc.) may not be directly
    //  accessible from a background thread, and could crash the application if directly accessed.  Also, attempting to debug
    //  code running in a background thread from an IDE, especially an older IDE (such as VB6) is likely to crash the IDE.
    }