Simple HTTP POST

Demonstrates a simple HTTP POST.

Download Chilkat HTTP ActiveX

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

...

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

begin

req := TChilkatHttpRequest.Create(Self);
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
    ShowMessage(http.LastErrorText);

  end;

//  This example simulates this FORM:
//  <form action="processPost.asp" method="post">
//  First name: <input type="text" name="firstName"><br />
//  Last name: <input type="text" name="lastName"><br />
//  <input type="submit" value="Submit">
//  </form>
//  The online FORM is found at this URL:
//  http://www.chilkatsoft.com/simpleForm.html

//  Build an HTTP POST Request:
req.UsePost();

//  The FORM target is http://www.chilkatsoft.com/processPost.asp
//  An easy way of filling out most of the HTTP request object
//  is to call SetFromUrl:
req.SetFromUrl('http://www.chilkatsoft.com/processPost.asp');

//  The only remaining task is to add the params to the
//  HTTP request object:
req.AddParam('firstName','Matt');
req.AddParam('lastName','Jones');

//  Send the HTTP POST and get the response.
//  The POST is being sent to chilkatsoft.com, on port 80
//  (the default HTTP port), and not using SSL.

domain := 'chilkatsoft.com';
port := 80;
ssl := 0;

//  The HTTP POST is sent here:

resp := http.SynchronousRequest(domain,port,ssl,req.DefaultInterface);
if (resp = nil ) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
  end
else
  begin
    //  Display the HTML source of the page returned.
    Memo1.Lines.Add(resp.BodyStr);

  end;
end;