HTTP POST x-www-form-urlencoded

Demonstrates how to send a simple URL encoded POST (content-type = x-www-form-urlencoded). Form params are passed in the HTTP request body in x-www-form-urlencoded format.

Download Chilkat HTTP ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATHTTPLib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
success: Integer;
req: TChilkatHttpRequest;
resp: IChilkatHttpResponse;

begin
http := TChilkatHttp.Create(Self);

//  Any string unlocks the component for the 1st 30-days.
success := http.UnlockComponent('Anything for 30-day trial');
if (success <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

req := TChilkatHttpRequest.Create(Self);

//  Add the request params expected by the server-side:
req.AddParam('city','Paris');
req.AddParam('country','France');

//  Send the POST  (This is a real URL that may be tested.)

resp := http.PostUrlEncoded('http://www.chilkatsoft.com/httpTest/cityCountry.asp',req.DefaultInterface);
if (resp = nil ) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

//  The exact HTTP request sent and response received
//  by the example code above is as follows:

//  
---- Sending ----
POST /httpTest/cityCountry.asp HTTP/1.1
Host: www.chilkatsoft.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 25

city=Paris&country=France
---- Received ----
HTTP/1.1 200 OK
Date: Wed, 09 Dec 2009 16:16:00 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
Content-Length: 156
Content-Type: text/html
Set-Cookie: ASPSESSIONIDQCDTSSAC=MHJCNFMDENFOKGINOFEDILCM; path=/
Cache-control: private


<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
</head>
<body>

France<br />Paris<br />

</body>
</html>

end;

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