![]() |
|
Your skill will accomplish what the force of many cannot |
|
PerlMonks |
Re: Re: Re: Can I timeout an accept call?by Fastolfe (Vicar) |
on Jun 10, 2002 at 22:48 UTC ( #173334=note: print w/replies, xml ) | Need Help?? |
Unfortunately, non-blocking IO isn't as simple as blocking IO. I'm not sure why you say that your sockets are "defaulted to non-blocking" simply by virtue of using IO::Socket::INET. To my knowledge, sockets created from this module are not automatically placed in a non-blocking state unless you explicitly ask for them that way. To get around the fact that many of your non-blocking socket calls will immediately return (frequently with 'undef'), you should use IO::Select to detect when a socket has something for you, or when a socket is available to accept data. It's generally safe then to read from or write to a socket such that you won't block, and won't get 'undef' (unless it really means it). Unfortunately this logic tends to add a lot of additional complexity to your code. Fortunately, much of this has already been encapsulated in some Perl modules, POE being the most noteworthy.
In Section
Seekers of Perl Wisdom
|
|