(Delphi ActiveX) HTTP/HTTPS using SOCKS4 Proxy

Demonstrates how to use HTTP/HTTPS with a SOCKS4 proxy.

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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
html: WideString;

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

http := TChilkatHttp.Create(Self);

// 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 <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add(html);
Memo1.Lines.Add('----');
Memo1.Lines.Add('Success!');
end;