[dispatcher] fix the socket regex

Author: razvancrainea

web/common/forms.php

@@ -505,6 +505,6 @@ function get_combo_options($combo)
 
 $re_ip = "([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3})";
 
-$re_socket = "^([a-zA-Z]+:)?(([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3})|([0-9A-Za-z_])+)(:[0-9]+)?$";
+$re_socket = "^([a-zA-Z]+:)?((([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3})(:[0-9]+)?)|[a-zA-Z][a-zA-Z0-9_]+)$";
 
 ?>