Port 80 is for normal brower style requests, port 81 for https request and as such are normaly allowed by most routers.
What your after is a something called html tunneling, its were you piggy back another conversation on top of an htmp request. I have a copy of 1st Edition of Kettle book, page 330 is a rmi client program. It uses rmi via the register on port 1099, so I can see this example helping you D. >Received-Date: Tue, 31 Dec 2002 11:53:27 GMT >X-Complaints-To: [EMAIL PROTECTED] >Delivered-To: [EMAIL PROTECTED] >MIME-Version: 1.0 >Date: Mon, 30 Dec 2002 21:44:35 -0800 >From: Richard Heintze <[EMAIL PROTECTED]> >Subject: Applet-Servlet RMI callbacks via Port 80? >To: [EMAIL PROTECTED] > > >My application needs to implement callbacks for web browsers behind firewalls. The only way I know this can be done (without polling) is to use RMI. > >I remember reading in Java Servlet Programming (1st Edition) about doing this on Port 80 with RMI -- there were foot notes referencing some javatips on www.javaworld.com. Unfortunately, I don't have my first edition any more! > >I'm looking thru the second edition of Java Servlet Programming by Jason Hunter and I cannot find find any references to using Port 80. Does Java RMI with Applet/Servlet connections still use port 80? > >If I install http://java.sun.com/products/plugin/ on IE, can I do RMI call backs? > > thanks, > > Siegfried > > > >--------------------------------- >Do you Yahoo!? >Yahoo! Mail Plus - Powerful. Affordable. Sign up now -- email [EMAIL PROTECTED] -- web www.pinan.co.uk --The opinions expressed in this article are personal and do not --represent the views of Pinan Software. ___________________________________________________________________________ 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