Pascal (Lazarus/Delphi)

HTTPS Requests over Squid Proxy Direct TLS Connection

See more HTTP Examples

Demonstrates how to send HTTP requests through an HTTP proxy that supports Direct TLS Connections. (Chilkat tests with a squid 4.11 proxy.)

A direct TLS connection to an HTTP proxy is where the initial connection to the proxy server is TLS.

Note: This example requires Chilkat v9.5.0.83 or greater.

Pascal (Lazarus/Delphi)

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;

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

procedure RunDemo;
var
  http: THttp;
  s: string;

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

  http := THttp.Create;

  //  Set the HTTP proxy domain or IP address.
  http.ProxyDomain := '172.16.16.46';
  //  The proxy port..
  http.ProxyPort := 3128;

  //  Indicate that we are to use a direct TLS connection with the HTTP proxy
  //  (we use a Squid Cache: Version 4.11 for testing)
  http.ProxyDirectTls := True;

  //  If the proxy requires a login or password, we can set it here.
  //  Otherwise comment out these lines.
  http.ProxyLogin := 'myProxyLogin';
  http.ProxyPassword := 'myProxyPassword';

  //  All requests sent on the http object will now go through the proxy.
  //  Give it a test:
  s := http.QuickGetStr('https://www.chilkatsoft.com/helloWorld.html');
  if (http.LastMethodSuccess = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  //  The LastErrorText property also contains information when method call succeeds.
  //  Have a look to see that the request was sent through the proxy:
  WriteLn(http.LastErrorText);

  WriteLn('---');
  WriteLn(s);
  WriteLn('---');
  WriteLn('Success for TLS destination over direct TLS HTTP proxy.');


  http.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.