Pascal (Lazarus/Delphi)

HTTP/HTTPS using SOCKS4 Proxy

See more HTTP Examples

Demonstrates how to use HTTP/HTTPS with a SOCKS4 proxy. 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;
  html: string;

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

  http := THttp.Create;

  //  Using a SOCKS4 proxy is just a matter of setting a few properties.
  //  Once these properties are set, all other coding is the same as when
  //  the connection is direct to the HTTP server.

  //  Set the SocksVersion property = 4 for SOCKS4
  http.SocksVersion := 4;

  //  Set the SocksHostname to the SOCKS proxy domain name or IP address, 
  //  which may be IPv4 (dotted notation) or IPv6.
  http.SocksHostname := '192.168.1.100';

  //  The port where the SOCKS4 proxy is listening.
  http.SocksPort := 1080;

  //  Now do whatever it is you need to do.  All communications will go through the proxy.
  html := http.QuickGetStr('https://www.baidu.com/');
  if (http.LastMethodSuccess <> True) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  WriteLn(html);
  WriteLn('----');
  WriteLn('Success!');


  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.