70 lines
1.9 KiB
Perl
Executable File
70 lines
1.9 KiB
Perl
Executable File
#!/usr/bin/perl
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use strict;
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use warnings;
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#
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# ONLY OpenBSD modules included with the default installation are permitted!
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#
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use HTTP::Tiny;
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use Net::Ping;
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use Time::HiRes;
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# Configuration hash (editable)
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my %config = (
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'timeout' => 0.20, # How long to wait before giving up on server response, in seconds
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'debug' => 1, # Debug output?
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'top' => 3, # How many entries to return?
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'protocol' => 'tcp', # tcp, udp, icmp, et al
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'port' => 'http', # (used in getservbyname sub)
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);
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# hash to store servers and response times to protocol/port requests
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my %serverstats;
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# create HTTP::Tiny instance
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my $http = HTTP::Tiny->new;
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# Get a list of all current OpenBSD FTP servers
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my $response = $http->get('http://ftp.eu.openbsd.org/pub/OpenBSD/ftplist');
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die "Failed!\n" unless $response->{success};
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# Iterate through server list and get TCP/80 response time in ms
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foreach my $line (split("\n", $response->{content})) {
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if ($line !~ /(cdn)/) {
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if ($line =~ /(http:\/\/)(.+?)(\/\S+)/) {
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my $response = &httping($2);
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$serverstats{$1.$2.$3} = $response if ($response);
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}
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}
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}
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# Sort & print servers by response time in ms
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my $i = 0;
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foreach my $key (sort {$serverstats{$a} <=> $serverstats{$b} } keys %serverstats) {
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$i++;
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print "$key\n";
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last if $i eq $config{'top'};
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}
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#
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# Ping TCP/80 and return response time or 0 if unresponsive + some diagnostic output
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#
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sub httping ($) {
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my $host = shift;
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my $ping = Net::Ping->new($config{'protocol'});
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$ping->hires();
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$ping->{port_num} = getservbyname($config{'port'}, $config{'protocol'});
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print ("Trying $host... ") if $config{'debug'};
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my ($retval, $duration, $ip) = $ping->ping($host, $config{'timeout'});
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$ping->close();
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$duration = int($duration * 1000);
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if ($retval) {
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print ("$duration ms\n") if $config{'debug'};
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return $duration;
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} else {
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print ("unresponsive\n") if $config{'debug'};;
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return 0;
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}
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}
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