I am working through a book where it uses perl to learn network programming. With a client written in a similar manner as to this server, the udp datagram is a little bit of text. When I run the program and send the packet it just sits in the receiv queue. I see this using netstat on all listening ports does anyone know how to not have it hold them in there and just process them?

#! /usr/bin/perl -w 

use strict;
use Socket;

use constant SIMPLE_UDP_PORT => 4001;
use constant MAX_RECV_LEN => 1500;
use constant LOCAL_INETNAME => 'localhost';

my $trans_serv = getprotobyname('udp');

my $local_host = pack "C4", split('\.', "127.0.0.1");

my $local_port = shift || SIMPLE_UDP_PORT;
my $local_addr = sockaddr_in($local_port, INADDR_ANY);

socket(UDP_SOCK, PF_INET, SOCK_DGRAM, $trans_serv);

bind(UDP_SOCK, $local_addr);

my $data;

while(1)
{
    my $from_who = recv(UDP_SOCK, $data, MAX_RECV_LEN, 0);
    
    if ($from_who)
    {
        my($the_port, $the_ip) = sockaddr_in($from_who);
        warn 'Received from ', inet_ntoa($the_ip), ": $data\n";
    }
    else
    {
        warn "Problem with recv: $!\n";
    }
}
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2020-07-14 Athanasius added code tags.

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In reply to Server hold udp packets in reciev queue by throwaway

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