Contributed by Anonymous Monk
on Apr 21, 2000 at 18:36 UTC
Q&A
> network programming
Description: I always run into questions about the use of some
getsockopt() and the use of some of the methods
in IO::Socket. I'd like to find an easy to understand
reference to using Socket and IO::Socket.
I've manned them, been to cpan, up and down perl.com
forever, even read a bunch of free scripts, but
I want to learn every option and method.
Ex: why doesn't this work?
getsockopt(TESTSOCK, SOL_SOCKET, SO_SNDTIMEO, 1);
When the description for getsockopt clearly states
getsockopt SOCKET LEVEL OPTNAME VAL
I need a good tutorial - if anyone can give a hand,
I'd surely appreciate a deviation from manuals that
don't provide examples
Answer: Where can I find resources about Socket, IO::Socket, IO::Socket::INET
contributed by btrott That's not what the perlfunc entry for *my*
getsockopt says--mine says:
getsockopt SOCKET,LEVEL,OPTNAME
Are you talking about getsockopt or
setsockopt? Sounds like the latter. But if
you're writing it as getsockopt, that's the
problem. :)
If you're using IO:Socket, this is much easier:
my $sock = IO::Socket::INET->new(
Listen => 5,
LocalAddr => 'localhost',
LocalPort => 9000,
Proto => 'tcp');
$sock->setopt(SO_SNDTIMEO, 1);
It acts on the SOL_SOCKET level.
In terms of a general resource--you said you've
read the man pages. Have you read the man pages
for the C functions that all this stuff is
based on? Those might help you out. The options
for setsockopt/getsockopt are in setsockopt(2). |
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