diff --git a/index.php b/index.php
index 66c7229..69e111b 100644
--- a/index.php
+++ b/index.php
@@ -19,6 +19,8 @@ $cas_servers=array(
 		'context' => '/cas',
 		// CAS server port
 		'port' => 443,
+		// If you running this application in HTTP only, uncomment following parameter
+		//'insecure' => true,
 		// Disable CAS server Validation
 		'ssl_validation' => false,
 		// If ssl_validation is enable you must define
@@ -33,6 +35,9 @@ $default_cas_server=key($cas_servers);
 // PhpCAS log file
 $phpCAS_logfile='/tmp/cas.log';
 
+// Local app URL (auto-detect on first acces if null)
+$service_url=null;
+
 /*
 
  ************************************
@@ -47,6 +52,23 @@ session_start();
 require $phpCAS_path;
 CAS_GracefullTerminationException::throwInsteadOfExiting();
 
+// Make sure service URL is defined (otherwise, load it from session or auto-detect) 
+if (is_null($service_url)) {
+	if (isset($_SESSION['service_url'])) {
+		$service_url = $_SESSION['service_url'];
+	}
+	else {
+		$https = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off');
+		$request_uri = $_SERVER['REQUEST_URI'];
+		$request_uri = preg_replace('/\?.*$/', '', $request_uri);
+		$service_url = "http".($https?"s":"")."://".$_SERVER['SERVER_NAME'];
+		if (($_SERVER['SERVER_PORT'] != 443 && $https) || ($_SERVER['SERVER_PORT'] != 80 && !$https))
+			$service_url .= ":".$_SERVER['SERVER_PORT'];
+		$service_url .= $request_uri;
+		$_SESSION['service_url'] = $service_url;
+	}
+}
+
 if (isset($_REQUEST['server']) && !isset($cas_servers[$_REQUEST['server']])) {
 	$warnings[]="Invalid CAS server choiced";
 	unset($_REQUEST['server']);
@@ -199,6 +221,7 @@ $phpCAS_config=array(
 	'CAS Hostname' => $cas_host,
 	'CAS server port' => $cas_servers[$cas_host]['port'],
 	'CAS server context' => $cas_servers[$cas_host]['context'],
+	'Service URL' => $service_url,
 );
 
 if (is_writable($phpCAS_logfile)) {
@@ -211,6 +234,28 @@ if (is_writable($phpCAS_logfile)) {
 }
 
 phpCAS::client(CAS_VERSION_2_0, $cas_host, $cas_servers[$cas_host]['port'], $cas_servers[$cas_host]['context']);
+phpCAS::setFixedServiceURL($service_url);
+
+if ($cas_servers[$cas_host]['insecure']) {
+	$phpCAS_config['Insecure'] = 'Yes';
+	$phpCAS_config['Base URL'] = 'http://'.$cas_host.($cas_servers[$cas_host]['port']?':'.$cas_servers[$cas_host]['port']:'').$cas_servers[$cas_host]['context'];
+	// Remove trailing slash if present
+	if (substr($phpCAS_config['Base URL'], -1)=='/')
+		$phpCAS_config['Base URL'] = substr($phpCAS_config['Base URL'], 0, -1);
+	$login_url = "$base_url/login";
+	$service_validate_url = "$base_url/serviceValidate";
+	$logout_url = "$base_url/logout";
+	$phpCAS_config['Login URL'] = $phpCAS_config['Base URL']."/login?service=".urlencode($service_url);
+	$phpCAS_config['Logout URL'] = $phpCAS_config['Base URL']."/logout";
+	$phpCAS_config['Service validate URL'] = $phpCAS_config['Base URL']."/serviceValidate";
+	phpCAS::setServerLoginURL($phpCAS_config['Login URL']);
+	phpCAS::setServerLogoutURL($phpCAS_config['Logout URL']);
+	phpCAS::setServerServiceValidateURL($phpCAS_config['Service validate URL']);
+	// Be sure SSL validation is disabled
+	$cas_servers[$cas_host]['ssl_validation'] = false;
+}
+else
+	$phpCAS_config['Insecure'] = 'No';
 
 echo "<div class='success'>Client successfully initialized</div>";
 
@@ -264,6 +309,7 @@ if (isset($_REQUEST['do'])) {
 			phpCAS::logout();
 			break;
 		case 'locallogout':
+			unset($_SESSION['session_url']);
 			unset($_SESSION['phpCAS']);
 			if (!isset($_SESSION['phpCAS'])) {
 				echo "<div class='success'>Successfully logout</div>";