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How to detect if a client browser is still receiving data from a CGI script

Posted on 1997-01-08
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Last Modified: 2013-12-25
I have a situation where it would help if I could detect if a browser is still receiving data from a script. Perhaps STDOUT closes when a browser presses Stop or goes somewhere else? Are there any Perl functions that report on socket/handle status?

Thanks for any help!
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Question by:AIRWOLF-mad
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glenk010897 earned 190 total points
ID: 1827533
The problem with the httpd/cgi protocol occurs when a user presses the Stop button on the browser. The web server that is responding to the request is given no immediate notice to abort its process. When a user aborts, the browser simply closes the socket that it had with the web server. The next time the server tries to write some data to that socket, it detects that the socket has been closed.

Yes there is a way - but you will have to change your implementation so that it first checks to see if the socket is still active.

For details plus sample Perl  code see the following page from the Genome Database website.

http://wwwtest.gdb.org/browser/abort/cgiAbort.html
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