Delphi DLL

Send XMLHttpRequest and Get Response

See more HTTP Examples

Demonstrates how to send an HTTP XML request and retrieve the response. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, HttpResponse, Http;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
xmlStr: PWideChar;
urlEndpoint: PWideChar;
xmlCharset: PWideChar;
resp: HCkHttpResponse;

begin
success := False;

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

http := CkHttp_Create();

// The XML sent in the body of the request is application
// specified -- it should contain whatever the server-side
// application is expecting..
xmlStr := '<?xml version="1.0" encoding="UTF-8"?><appXml><something>123</something></appXml>';

urlEndpoint := 'http://www.chilkatsoft.com/xmlEcho.asp';
xmlCharset := 'utf-8';

resp := CkHttpResponse_Create();
success := CkHttp_HttpStr(http,'POST',urlEndpoint,xmlStr,xmlCharset,'application/xml',resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// The raw HTTP request sent by the above call is:

// POST /xmlEcho.asp HTTP/1.1
// Content-Type: text/xml
// Host: www.chilkatsoft.com
// Accept: */*
// Accept-Charset: ISO-8859-1,utf-8;q=0.7,*; q=0.7
// Accept-Language: en-us,en;q=0.5
// Accept-Encoding: gzip
// Content-Length: 81
// 
// <?xml version="1.0" encoding="UTF-8"?><appXml><something>123</something></appXml>

// Examine the Body of the HTTP response
// This would be the XML response sent by the server.
Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));

CkHttp_Dispose(http);
CkHttpResponse_Dispose(resp);

end;