Date: Wed, 15 Dec 2021 18:55:17 +0800 From: Piper H <potthua@gmail.com> To: Ronald Klop <ronald-lists@klop.ws> Cc: freebsd-current@freebsd.org Subject: Re: question on socket server Message-ID: <CA%2BGLnbhqwAWJYDxO0MV27mXhvyqWBdPPnAVd6mfQdiNWvuvahA@mail.gmail.com> In-Reply-To: <1412287950.345.1639565502579@localhost> References: <CA%2BGLnbiqXQDfMLovYgipiLjSvRSWk%2B1ukDrh779=zZDt3P2L7Q@mail.gmail.com> <1412287950.345.1639565502579@localhost>
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But I write this program to listen on port 6666 who sends a random str to
the socket every 0.25 second. And there is no client connecting to the
port. The server just runs there without problem. :( So I am not sure
enough...
use strict;
package MyPackage;
use base qw(Net::Server);
my @fruit=qw(
...
);
sub process_request {
my $self = shift;
$| = 1;
my $max = scalar @fruit;
while (1) {
my $id1 = int(rand($max));
my $str = $fruit[$id1];
print "$str\015\012";
select(undef, undef, undef, 0.25);
}
}
MyPackage->run(port => 6666, ipv => '*');
On Wed, Dec 15, 2021 at 6:51 PM Ronald Klop <ronald-lists@klop.ws> wrote:
> Hi,
>
> Just try it!
>
> I think you will get an error that you are writing to a not-connected
> socket.
> From "man 2 write":
> " [EPIPE] An attempt is made to write to a socket of type
> SOCK_STREAM that is not connected to a peer socket."
>
> See also "man 2 send" and "man 2 socket" for a lot more information.
>
> So it depends a bit on the type of socket you created.
>
> Regards and happy hacking,
> Ronald.
>
>
>
> *Van:* Piper H <potthua@gmail.com>
> *Datum:* woensdag, 15 december 2021 07:52
> *Aan:* freebsd-current@freebsd.org
> *Onderwerp:* question on socket server
>
> Hello
>
> I have little knowledge about socket programming.
> I have a question that, if I have made a socket server, listening on a
> port. The server prints data to the socket, but there is never a client
> connection to the port, and the data is never consumed. What will happen to
> the server then? will the OS kernel be flushed by junk bytes?
>
> Thanks for your help.
> Piper
> ------------------------------
>
>
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