My task: Write a chat server that neither uses plugins/applets nor refreshes constantly at interval. My solution: Exploit HTTP keep-alive to maintain a connection with the browser, printing to the browser as I recieve new data. My problem: How to tell when the user has closed the browser or changed pages. What I've tried: I've tried trapping for signals, but it seems like no signals are being thrown...even when I print to a dead socket. It seems as if printing to a dead socket throws no errors. My question(s): 1)Is the browser really closing the connection when the user switches pages? My guess is a yes.; 2)How do I tell when the user has disconnected?; 3)If the browser isn't closing the connection when the user has left the page, then how do I force it to? Blessed are those who follow the ways of Perl. ~Michael D. Stemle, Jr.

In reply to How to tell when a browser disconnects... by mikes1024

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.