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From "Ivan Melnikov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (EMAIL-128) HtmlEmail doesn't close connection to smtp server
Date Sun, 21 Jul 2013 02:38:48 GMT
Ivan Melnikov created EMAIL-128:
-----------------------------------

             Summary: HtmlEmail doesn't close connection to smtp server
                 Key: EMAIL-128
                 URL: https://issues.apache.org/jira/browse/EMAIL-128
             Project: Commons Email
          Issue Type: Bug
    Affects Versions: 1.3.1
            Reporter: Ivan Melnikov
            Priority: Blocker


***Prehistory:

I tried to send html email to smtp server from my GWT application servlet by using this official
site user guide example http://commons.apache.org/proper/commons-email/userguide.html the
"HtmlEmail" usage snippet...

Sending message with smtp requires authentication and encryption so I combined two examples
and used code like a (see my snippets)

snippet A : 
------------------------------------
public class Send{

public synchronized SendReport send(MyMessage msg){
...
// Create the email message
		  HtmlEmail email = new HtmlEmail();
		  
		  
		  try {
			  
			  email.setHostName("smtp.mail.com");
			  email.setSmtpPort(465);
			  email.setAuthenticator(new DefaultAuthenticator(USER_NAME,PASSWORD));
			  email.setSSLOnConnect(true);			  
			  
			  email.addTo(TO, "test");//send to me...
//			  email.addTo(msg.getEmail());//send notification...
			  
			  email.setFrom(FROM, msg.getFrom());
			  email.setSubject(msg.getSubject());			  
			  		  
			  String message=msg.getMessage();
			  
			  email.setHtmlMsg(message);

			  // set the alternative message
			  email.setTextMsg("Your email client does not support HTML messages");

			  // send the email
			  email.send();			  
			  
			  
		} catch (EmailException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			
			
		}
}//method end...
}//class end...
------------------------------------

snippet B: the gwt/rpc servlet 	

public class SendServiceImpl extends RemoteServiceServlet implements SendService {

	static Send send=new Send();
	
	@Override
	public SentReport sendMessage(MyMessage message) {
				
		return this.getMessageSend().sendMessage(message);
	}
	
	private synchronized Send getSend()
	{
		return this.send;
	}
}


------------------------------------

***Problem description:

Message sending works fine and I can see email in my inbox; The problem occurs when I stop
Tomcat and close the web application browser tab (FF for example); for some reason right after
that my web browser (FireFox) cannot download web pages (throws connection timeout error...)
though Internet connection is working fine :S I tried to download web pages with another internet
browser Chrome for example but it behaves all the same :( I tried to see opened ports with
"netstat -an" cmd and it shows me a long list of opened ports (which I don't have until send
email code as "email.send();" activated...); That makes me think that for some reason the
JavaMail connection to smtp server is NOT CLOSED or something similar?
The problem disappears only after I restart my OS (Windows XP Pro SP3);  

So I suspect some bug which prevents smtp server connection closing after message send; I
cannot say for sure but maybe socket connection doesn't close after message has been sent
and received... I am not sure what should I add to my code to solve the problem because I
followed all user guide examples which don't show how to close smtp server connection manually
or something so I am a confused how to fix it :( Maybe it is some kind of memory leak due
to JavaMail I don't know...

I dearly need your help because it is quite complicated issue as for me that makes impossible
to use HtmlEmail class in my gwt application (its server side code)


***My project uses

- IDE : Eclipse Indigo 3.7
- GWT SDK 2.3
- JavaMail API 1.4.5
- commons-email-1.3.1
- Tomcat 7/ Jetty - in eclipse
- JRE: version 7 Update 25 build 1.7.0_25-b17
- OS: Windows XP Pro SP3






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