(Delphi DLL) HTTP/HTTPS using SOCKS4 Proxy

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

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;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
html: PWideChar;

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

http := CkHttp_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
CkHttp_putSocksVersion(http,4);

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

// The port where the SOCKS4 proxy is listening.
CkHttp_putSocksPort(http,1080);

// Now do whatever it is you need to do.  All communications will go through the proxy.
html := CkHttp__quickGetStr(http,'https://www.baidu.com/');
if (CkHttp_getLastMethodSuccess(http) <> True) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

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

CkHttp_Dispose(http);

end;