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From "Ivan Melnikov (JIRA)" <>
Subject [jira] [Issue Comment Deleted] (EMAIL-128) HtmlEmail doesn't close connection to smtp server
Date Wed, 24 Jul 2013 00:14:50 GMT


Ivan Melnikov updated EMAIL-128:

    Comment: was deleted

(was: I was digging the problem... Maybe this is eclipse bug issue only because I did things

- A) Deleted all items from my sys Temp folder
- B) Refreshed my eclipse project
- C) Recompiled the gwt project

... and after that I don't see any suspicious exceptions in my .metadata folder .log file
so maybe the problem is solved fine because all internet browsers work fine after I send and
receive email :)

If the problem keep going I'll report but now I guess the issue can be closed

Thank you all for help)
> HtmlEmail doesn't close connection to smtp server
> -------------------------------------------------
>                 Key: EMAIL-128
>                 URL:
>             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
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("");
> 			  email.setSmtpPort(465);
> 			  email.setAuthenticator(new DefaultAuthenticator(USER_NAME,PASSWORD));
> 			  email.setSSLOnConnect(true);			  
> 			  email.addTo(TO, "test");
> 			  email.setFrom(FROM, msg.getFrom());
> 			  email.setSubject(msg.getSubject());			  
> 			  String message=msg.getMessage();
> 			  email.setHtmlMsg(message);
> 			   email.setTextMsg("Your email client does not support HTML messages");
> 			   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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