Delphi ActiveX

SSL Client Certificate

See more Socket/SSL/TLS Examples

Demonstrates how to connect to an SSL server using a client-side certificate, send a simple message, receive a simple response, and disconnect. Delphi ActiveX

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
success: Integer;
socket: TChilkatSocket;
certStore: TChilkatCertStore;
jsonCN: TChilkatJsonObject;
cert: TChilkatCert;
ssl: Integer;
maxWaitMillisec: Integer;
sslServerHost: WideString;
sslServerPort: Integer;
receivedMsg: WideString;

begin
success := 0;

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

socket := TChilkatSocket.Create(Self);

// Create an instance of a certificate store object, load a PFX file,
// locate the certificate we need, and use it for signing.
// (a PFX file may contain more than one certificate.)
certStore := TChilkatCertStore.Create(Self);
// The 1st argument is the filename, the 2nd arg is the 
// PFX file's password:
success := certStore.LoadPfxFile('chilkat_secret.pfx','secret');
if (success <> 1) then
  begin
    Memo1.Lines.Add(certStore.LastErrorText);
    Exit;
  end;

// Find the certificate by the subject common name:
jsonCN := TChilkatJsonObject.Create(Self);
jsonCN.UpdateString('CN','cert common name');

cert := TChilkatCert.Create(Self);
success := certStore.FindCert(jsonCN.ControlInterface,cert.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(certStore.LastErrorText);
    Exit;
  end;

success := socket.SetSslClientCert(cert.ControlInterface);

ssl := 1;
maxWaitMillisec := 20000;

// The SSL server hostname may be an IP address, a domain name,
// or "localhost".  You'll need to change this:

sslServerHost := '123.123.88.88';
sslServerPort := 8123;

// Connect to the SSL server:
success := socket.Connect(sslServerHost,sslServerPort,ssl,maxWaitMillisec);
if (success <> 1) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;

// Set maximum timeouts for reading an writing (in millisec)
socket.MaxReadIdleMs := 20000;
socket.MaxSendIdleMs := 20000;

// Send a "Hello Server! -EOM-" message:
success := socket.SendString('Hello Server! -EOM-');
if (success <> 1) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;

// The server (in this example) is going to send a "Hello Client! -EOM-" 
// message.  Read it:
receivedMsg := socket.ReceiveUntilMatch('-EOM-');
if (socket.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(socket.LastErrorText);
    Exit;
  end;

// Close the connection with the server
// Wait a max of 20 seconds (20000 millsec)
success := socket.Close(20000);

Memo1.Lines.Add(receivedMsg);
end;