(Delphi DLL) HTTP POST x-www-form-urlencoded

Demonstrates how to send a simple x-www-form-urlencoded POST.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
jsonStr: PWideChar;
req: HCkHttpRequest;
resp: HCkHttpResponse;
responseBody: PWideChar;
fac: HCkFileAccess;
filepath: PWideChar;
success: Boolean;

begin
http := CkHttp_Create();

jsonStr := '{ some json ... }';

req := CkHttpRequest_Create();
//  This query parameter just happens to be named "json" and contains JSON text.
CkHttpRequest_AddParam(req,'json',jsonStr);

//  We can optionally add more query parameters.
CkHttpRequest_AddParam(req,'abc','123');
CkHttpRequest_AddParam(req,'xml','<abc>123</abc>');

//  Note: Just because we passed a query param named "json" or "xml" means nothing special.  It's still just
//  a name=value query parameter..

resp := CkHttp_PostUrlEncoded(http,'http://example.net/cirrus/connect/report',req);
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

if (CkHttpResponse_getStatusCode(resp) <> 200) then
  begin
    Memo1.Lines.Add('Hey, I didn''t receive the expected response status code!');
    Memo1.Lines.Add('status code = ' + IntToStr(CkHttpResponse_getStatusCode(resp)));
  end;

//  Could be error text if the status code wasn't what we expected, or could be the response
//  body you're seeking..
responseBody := CkHttpResponse__bodyStr(resp);
Memo1.Lines.Add(responseBody);

fac := CkFileAccess_Create();
filepath := 'some file path';
success := CkFileAccess_WriteEntireTextFile(fac,filepath,responseBody,'utf-8',False);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkFileAccess__lastErrorText(fac));
  end;

CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
CkFileAccess_Dispose(fac);

end;