Technically speaking, UnknownHostException is unrelated to the I/O you are
trying
to do. It means it couldn't resolve the host address in order to initiate
communications.
That's the same type of error as when you type in the URL in a browser
address
window and try to connect to the site. You'll obviously get the error if
there's
no such address, but you'll also get it if you enter a name and the Domain
Name Server
you use to translate that to an IP address can't find the name in its
database.
Duane Morse, Eldorado Computing Inc., Phoenix AZ
-----Original Message-----
From: Servlet Archives [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, November 14, 2000 11:32 AM
To: [EMAIL PROTECTED]
Subject: Re: HANDLER THREAD PROBLEM: java.io.IOException: Socket Closed
No, i tried not closing the input stream too, it gives me an error as
UnKnow Host java.net.UnknownHostException: java.sun.com, i am little bit
confused here according to the spec if there is any I/O error when you try
to construct an URL object, then there it would throw an I/O error only but
here it throws an UNKNOWNHOSTEXCEPTION error. I tried james code with
URLCONNECTION too but returned with the same error. But when i just
construct an URL and try to read the protocol and portnumber it works like
charm, this UNKNOWNHOSTEXCEPTION comes only for when i try to open an I/O
input.
can any1 clarify this??
>From: Duane Morse <[EMAIL PROTECTED]>
>Reply-To: "A mailing list for discussion about Sun Microsystem's Java
> Servlet API Technology." <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: HANDLER THREAD PROBLEM: java.io.IOException: Socket Closed
>Date: Tue, 14 Nov 2000 11:09:46 -0700
>
>From my experience with sockets, the input stream and output stream are
>probably
>tied to the same socket, and closing the input closes the output too.
>Then,
>when
>you close the output yourself, you get the exception.
>
>Solution -- let the base class close the streams.
>
>Duane Morse, Eldorado Computing Inc., Phoenix AZ
>
>
>-----Original Message-----
>From: James Knowles [mailto:[EMAIL PROTECTED]]
>Sent: Tuesday, November 14, 2000 9:48 AM
>To: [EMAIL PROTECTED]
>Subject: Re: HANDLER THREAD PROBLEM: java.io.IOException: Socket Closed
>
>
>I am also getting this... does anybody know how to catch this exception...
>
>This is my code that give this error on the console ... ( I am on NT as
>well
>(please forgive me... ))
>
>import java.io.*;
>import java.net.*;
>import java.text.*;
>import java.util.*;
>import javax.servlet.*;
>import javax.servlet.http.*;
>
>
>public class readand extends HttpServlet {
>
>
>
>public void doGet(HttpServletRequest request,HttpServletResponse response)
>throws IOException, ServletException
> {
>
> response.setContentType("text/html");
> PrintWriter out = response.getWriter();
>try {
> URL url = new URL("http://www.laserrec.co.uk/Default.asp");
> BufferedReader in = new BufferedReader(new
>InputStreamReader(url.openStream()));
>
> int countit = -1;
> String str;
> while ((str = in.readLine()) != null) {
> out.println(str + "\n");
> }
> in.close();
> } catch (MalformedURLException e) {
> }
> catch (IOException e) {
> out.println("<br>The webserver is down");
> out.println(e);
> }
>
> }
>}
>
>When it returns the page correctly I get all of the java.io.IOExceptions
>even though I thought I would have caught them all with catch (IOException
>e)
>
>Hope this helps explain a bit more of the problem ...
>
>James
>
>----- Original Message -----
>From: "[Andrew Fairburn]" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Sent: Tuesday, November 14, 2000 3:57 PM
>Subject: HANDLER THREAD PROBLEM: java.io.IOException: Socket Closed
>
>
> > Hello,
> > I'm using jswdk-1.0.1 on NT and keep getting this exception. Does anyone
> > know what is causing this - or even suggest something. I've searched the
> > archives/ and the web but have been unable to resolve it. Thanks,
> > Andy
> >
> >
> > HANDLER THREAD PROBLEM: java.io.IOException: Socket Closed
> > java.io.IOException: Socket Closed
> > at
>java.net.PlainSocketImpl.getInputStream(PlainSocketImpl.java:421)
> > at java.net.Socket$1.run(Socket.java:335)
> > at java.security.AccessController.doPrivileged(Native Method)
> > at java.net.Socket.getInputStream(Socket.java:332)
> > at
> > com.sun.web.server.ConnectionHandler.run(ConnectionHandler.java:161)
> >
> >
> >
> > Andrew Fairburn
> > Vodafone Multimedia Ltd
> > Tel: 01635-685841
> >
> >
>___________________________________________________________________________
> > To unsubscribe, send email to [EMAIL PROTECTED] and include in the
>body
> > of the message "signoff SERVLET-INTEREST".
> >
> > Archives: http://archives.java.sun.com/archives/servlet-interest.html
> > Resources: http://java.sun.com/products/servlet/external-resources.html
> > LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
>
>___________________________________________________________________________
>To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
>of the message "signoff SERVLET-INTEREST".
>
>Archives: http://archives.java.sun.com/archives/servlet-interest.html
>Resources: http://java.sun.com/products/servlet/external-resources.html
>LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
>
>___________________________________________________________________________
>To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
>of the message "signoff SERVLET-INTEREST".
>
>Archives: http://archives.java.sun.com/archives/servlet-interest.html
>Resources: http://java.sun.com/products/servlet/external-resources.html
>LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
Share information about yourself, create your own public profile at
http://profiles.msn.com.
___________________________________________________________________________
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff SERVLET-INTEREST".
Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
___________________________________________________________________________
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff SERVLET-INTEREST".
Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
