sub establishConnection{
    my ($url) = @_;
    
    # create UserAgent
    my $agent = LWP::UserAgent->new();
	
    # keep alive
    $agent->conn_cache(LWP::ConnCache->new()); 
    # the newly created connection cache object will cache only one connection at time
    # To have it cache more, total_capacity attribute is used.
    # total_capacity(10) will cache 10 connection, undef with no limits
    $agent->conn_cache->total_capacity(undef);

    # user agent
    $agent->agent('Opera/9.80 (X11; Linux i686; U; en) Presto/2.2.15 Version/10.10');
    
    # timeout
    $agent->timeout();

    # cookies
    $agent->cookie_jar( {} );

    # post request
    my $response = $agent->post($url, 
 	[
	 'j_id_jsp_1095591257_1' => 'j_id_jsp_1095591257_1',
	 'j_id_jsp_1095591257_1:pflegeart' => '1000',
	 'j_id_jsp_1095591257_1:pLZ' => '55425' ,
	 'j_id_jsp_1095591257_1:entfernung' => '20', 
	 'j_id_jsp_1095591257_1:ort' => '',
	 'j_id_jsp_1095591257_1:j_id_jsp_1095591257_49' => 'Suche+starten',
	 'javax.faces.ViewState' => 'j_id10035:j_id10037',
	]
	);
    print $response->content();
}