Hello Support

I would like some help developing a manual strategy. I want to receive an alert by email when MACD crosses for a range bar chart. I have cribbed together some code using files submitted in another post. It compiles, but I get email authentication errors. I am not sure how to resolve this.

The code is attached. I would be grateful for some help.

tinfx:

You need to autenticate to smtp servers for them to allow sending e-mails.

Please take the following example:

import java.util.Properties;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage; 
import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication; 

public class SendMail {
   
   private String mailSMTPServer;
   private String mailSMTPServerPort;
   
   SendMail() { 
      mailSMTPServer = "smtp.gmail.com";
      mailSMTPServerPort = "465";
   }
   
   SendMail(String mailSMTPServer, String mailSMTPServerPort) { 
      this.mailSMTPServer = mailSMTPServer;
      this.mailSMTPServerPort = mailSMTPServerPort;
   }
   
   public void sendMail(String from, String to, String subject, String message) {
      
      Properties props = new Properties();

                /*
                props.setProperty("proxySet","true");
                props.setProperty("socksProxyHost","192.168.155.1"); 
                props.setProperty("socksProxyPort","1080"); 
                */

      props.put("mail.transport.protocol", "smtp");
      props.put("mail.smtp.starttls.enable","true"); 
      props.put("mail.smtp.host", mailSMTPServer); 
      props.put("mail.smtp.auth", "true"); 
      props.put("mail.smtp.user", from);
      props.put("mail.debug", "true");
      props.put("mail.smtp.port", mailSMTPServerPort); 
      props.put("mail.smtp.socketFactory.port", mailSMTPServerPort); 
      props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
      props.put("mail.smtp.socketFactory.fallback", "false");
      
      
      SimpleAuth auth = null;
      auth = new SimpleAuth ("login","password");
      
      Session session = Session.getDefaultInstance(props, auth);
      session.setDebug(true); 
      Message msg = new MimeMessage(session);

      try {
         
         msg.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
         
         msg.setFrom(new InternetAddress(from));
         
         msg.setSubject(subject);
         
         msg.setContent(message,"text/plain");

      } catch (Exception e) {
         System.out.println(">> Error: Need to complete message");
         e.printStackTrace();
      }
      
      
      Transport tr;
      try {
         tr = session.getTransport("smtp"); 
         
         tr.connect(mailSMTPServer, "login", "password");
         msg.saveChanges(); 
         
         tr.sendMessage(msg, msg.getAllRecipients());
         tr.close();
      } catch (Exception e) {
         
         System.out.println(">> Error: Send message");
         e.printStackTrace();
      }

   }
}

class SimpleAuth extends Authenticator {
   public String username = null;
   public String password = null;


   public SimpleAuth(String user, String pwd) {
      username = user;
      password = pwd;
   }

   protected PasswordAuthentication getPasswordAuthentication() {
      return new PasswordAuthentication (username,password);
   }
} 

I hope this helps

Best regards

Trade well and good luck

JL

Thanks JL

I am new to Java. How would I call sendmail from SIMPLEMACD_strat.

Assistance greatly appreciated.

Tin

Managed to work it out. Thanks for your help.