Lazarus Pascal

HTTP SOAP 1.2 Request and Response using POST

See more HTTP Examples

Demonstrates a working 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.

Lazarus Pascal

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.HttpRequest,
  Chilkat.HttpResponse,
  Chilkat.Xml;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  soapXml: TXml;
  req: THttpRequest;
  resp: THttpResponse;
  xmlResponse: TXml;

begin
  success := False;

  //  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.
  //  --------------------------------------------------------------------------------

  http := THttp.Create;

  soapXml := TXml.Create;

  soapXml.Tag := 'soap12:Envelope';
  success := soapXml.AddAttribute('xmlns:xsi','http://www.w3.org/2001/XMLSchema-instance');
  success := soapXml.AddAttribute('xmlns:xsd','http://www.w3.org/2001/XMLSchema');
  success := soapXml.AddAttribute('xmlns:soap12','http://www.w3.org/2003/05/soap-envelope');

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

  WriteLn(soapXml.GetXml());

  req := THttpRequest.Create;
  req.HttpVerb := 'POST';
  req.SendCharset := False;
  req.AddHeader('Content-Type','application/soap+xml; charset=utf-8');
  req.AddHeader('SOAPAction','http://ws.cdyne.com/WeatherWS/GetCityWeatherByZIP');
  req.Path := '/WeatherWS/Weather.asmx';
  success := req.LoadBodyFromString(soapXml.GetXml(),'utf-8');

  http.FollowRedirects := True;

  resp := THttpResponse.Create;
  success := http.HttpSReq('wsf.cdyne.com',80,False,req,resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  xmlResponse := TXml.Create;
  success := xmlResponse.LoadXml(resp.BodyStr);
  WriteLn(xmlResponse.GetXml());


  http.Free;
  soapXml.Free;
  req.Free;
  resp.Free;
  xmlResponse.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.