Lazarus Pascal Requires Chilkat v11.0.0+

Example: Http.HttpReq method

Demonstrates how to call the HttpReq method. 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.JsonObject;

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

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  json: TJsonObject;
  req: THttpRequest;
  resp: THttpResponse;

begin
  success := False;

  http := THttp.Create;
  success := False;

  //  This example will send an HTTP POST with the body of the HTTP request containing JSON.

  //  Create the following JSON: { "name": "Harry", "state": "FL" }

  json := TJsonObject.Create;
  json.UpdateString('name','Harry');
  json.UpdateString('state','FL');

  //  Specify the details of the request
  req := THttpRequest.Create;

  req.HttpVerb := 'POST';
  req.ContentType := 'application/json';
  req.LoadBodyFromString(json.Emit(),'utf-8');

  //  Send the charset attribute in the HTTP request header.
  req.SendCharset := True;
  req.Charset := 'utf-8';

  //  Send the POST
  //  You can send the POST to the URL below.  
  //  The response will contain the raw body of the request that was sent.
  //  (i.e. everything except the HTTP request header).

  resp := THttpResponse.Create;
  success := http.HttpReq('https://www.chilkatsoft.com/echo_request_body.asp',req,resp);
  if (success = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  //  Examine the HTTP request header we sent:
  WriteLn(http.LastHeader);

  //  The response body contains the raw content of the HTTP request body we sent.
  WriteLn(resp.BodyStr);

  //  Sample output:

  //  POST /echo_request_body.asp HTTP/1.1
  //  Host: www.chilkatsoft.com
  //  Content-Type: application/json; charset=utf-8
  //  Content-Length: 29
  //  
  //  
  //  {"name":"Harry","state":"FL"}


  http.Free;
  json.Free;
  req.Free;
  resp.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.