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diff --git a/lib/Smokeping/probes/EchoPingHttp.pm b/lib/Smokeping/probes/EchoPingHttp.pm
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+++ b/lib/Smokeping/probes/EchoPingHttp.pm
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+package Smokeping::probes::EchoPingHttp;
+
+=head1 301 Moved Permanently
+
+This is a Smokeping probe module. Please use the command 
+
+C<smokeping -man Smokeping::probes::EchoPingHttp>
+
+to view the documentation or the command
+
+C<smokeping -makepod Smokeping::probes::EchoPingHttp>
+
+to generate the POD document.
+
+=cut
+
+use strict;
+use base qw(Smokeping::probes::EchoPing);
+use Carp;
+
+sub pod_hash {
+	return {
+		name => <<DOC,
+Smokeping::probes::EchoPingHttp - an echoping(1) probe for SmokePing
+DOC
+		overview => <<DOC,
+Measures HTTP roundtrip times (web servers and caches) for SmokePing.
+DOC
+		notes => <<DOC,
+The I<fill>, I<size> and I<udp> EchoPing variables are not valid for EchoPingHttp.
+DOC
+		authors => <<'DOC',
+Niko Tyni <ntyni@iki.fi>
+DOC
+		see_also => <<DOC,
+EchoPing(3pm), EchoPingHttps(3pm)
+DOC
+	}
+}
+
+sub _init {
+	my $self = shift;
+	# HTTP doesn't fit with filling or size
+	my $arghashref = $self->features;
+	delete $arghashref->{size};
+	delete $arghashref->{fill};
+}
+
+# tag the port number after the hostname
+sub make_host {
+	my $self = shift;
+	my $target = shift;
+
+	my $host = $self->SUPER::make_host($target);
+	my $port = $target->{vars}{port};
+
+	$host .= ":$port" if defined $port;
+	return $host;
+}
+
+sub proto_args {
+	my $self = shift;
+	my $target = shift;
+	my $url = $target->{vars}{url};
+
+	my @args = ("-h", $url);
+
+	# -A : ignore cache
+	my $ignore = $target->{vars}{ignore_cache};
+	$ignore = 1 
+		if (defined $ignore and $ignore ne "no" 
+			and $ignore ne "0");
+	push @args, "-A" if $ignore and not exists $self->{_disabled}{A};
+
+	# -a : force cache to revalidate the data
+	my $revalidate = $target->{vars}{revalidate_data};
+	$revalidate= 1 if (defined $revalidate and $revalidate ne "no" 
+		and $revalidate ne "0");
+	push @args, "-a" if $revalidate and not exists $self->{_disabled}{a};
+
+	return @args;
+}
+
+sub test_usage {
+	my $self = shift;
+	my $bin = $self->{properties}{binary};
+	croak("Your echoping binary doesn't support HTTP")
+		if `$bin -h/ 127.0.0.1 2>&1` =~ /(invalid option|not compiled|usage)/i;
+	if (`$bin -a -h/ 127.0.0.1 2>&1` =~ /(invalid option|not compiled|usage)/i) {
+		carp("Note: your echoping binary doesn't support revalidating (-a), disabling it");
+		$self->{_disabled}{a} = undef;
+	}
+
+	if (`$bin -A -h/ 127.0.0.1 2>&1` =~ /(invalid option|not compiled|usage)/i) {
+		carp("Note: your echoping binary doesn't support ignoring cache (-A), disabling it");
+		$self->{_disabled}{A} = undef;
+	}
+
+	$self->SUPER::test_usage;
+	return;
+}
+
+sub ProbeDesc($) {
+        return "HTTP pings using echoping(1)";
+}
+
+sub targetvars {
+	my $class = shift;
+	my $h = $class->SUPER::targetvars;
+	delete $h->{udp};
+	delete $h->{fill};
+	delete $h->{size};
+	return $class->_makevars($h, {
+		url => {
+			_doc => <<DOC,
+The URL to be requested from the web server or cache. Can be either relative
+(/...) for web servers or absolute (http://...) for caches.
+DOC
+			_default => '/',
+		},
+		port => {
+			_doc => 'The TCP port to use.',
+			_example => 80,
+			_re => '\d+',
+		},
+		ignore_cache => {
+			_doc => <<DOC,
+The echoping(1) "-A" option: force the proxy to ignore the cache.
+Enabled if the value is anything other than 'no' or '0'.
+DOC
+			_example => 'yes',
+		},
+		revalidate_data => {
+			_doc => <<DOC,
+The echoping(1) "-a" option: force the proxy to revalidate data with original 
+server. Enabled if the value is anything other than 'no' or '0'.
+DOC
+			_example => 'no',
+		},
+	});
+}
+
+1;