--- a/src/luan/modules/url/LuanUrl.java	Tue Sep 03 22:12:53 2019 -0600
+++ b/src/luan/modules/url/LuanUrl.java	Tue Sep 03 22:54:31 2019 -0600
@@ -44,7 +44,7 @@
 	public LuanUrl(URL url,LuanTable options) throws LuanException {
 		if( options != null ) {
 			Map map = options.asMap();
-			String methodStr = getString(map,"method");
+			String methodStr = Utils.removeString(map,"method");
 			if( methodStr != null ) {
 				methodStr = methodStr.toUpperCase();
 				try {
@@ -53,7 +53,7 @@
 					throw new LuanException( "invalid method: "+methodStr );
 				}
 			}
-			Map headerMap = getMap(map,"headers");
+			Map headerMap = removeMap(map,"headers");
 			if( headerMap != null ) {
 				for( Object hack : headerMap.entrySet() ) {
 					Map.Entry entry = (Map.Entry)hack;
@@ -71,15 +71,15 @@
 					}
 				}
 			}
-			Map auth = getMap(map,"authorization");
+			Map auth = removeMap(map,"authorization");
 			if( auth != null ) {
 				if( headers!=null && headers.containsKey("authorization") )
 					throw new LuanException( "can't define authorization with header 'authorization' defined" );
-				String username = getString(auth,"username");
+				String username = Utils.removeString(auth,"username");
 				if( username==null )  username = "";
-				String password = getString(auth,"password");
+				String password = Utils.removeString(auth,"password");
 				if( password==null )  password = "";
-				String type = getString(auth,"type");
+				String type = Utils.removeString(auth,"type");
 				if( !auth.isEmpty() )
 					throw new LuanException( "unrecognized authorization options: "+auth );
 				if( type != null ) {
@@ -92,8 +92,8 @@
 					authPassword = password;
 				}
 			}
-			Map params = getMap(map,"parameters");
-			String enctype = getString(map,"enctype");
+			Map params = removeMap(map,"parameters");
+			String enctype = Utils.removeString(map,"enctype");
 			Object content = map.remove("content");
 			if( content != null ) {
 				if( this.method != Method.POST )
@@ -159,11 +159,10 @@
 					}
 				}
 			}
-			Integer timeout = getInt(map,"time_out");
+			Integer timeout = Utils.removeInt(map,"time_out");
 			if( timeout != null )
 				this.timeout = timeout;
-			if( !map.isEmpty() )
-				throw new LuanException( "unrecognized options: "+map );
+			Utils.checkEmpty(map);
 		}
 		this.url = url;
 	}
@@ -181,32 +180,8 @@
 		}
 	}
 
-	private static String getString(Map map,String key) throws LuanException {
-		Object val = map.remove(key);
-		if( val!=null && !(val instanceof String) )
-			throw new LuanException( "parameter '"+key+"' must be a string" );
-		return (String)val;
-	}
-
-	private static Integer getInt(Map map,String key) throws LuanException {
-		Object val = map.remove(key);
-		if( val==null )
-			return null;
-		Integer i = Luan.asInteger(val);
-		if( i==null )
-			throw new LuanException( "parameter '"+key+"' must be an integer" );
-		return i;
-	}
-
-	private static LuanTable getTable(Map map,String key) throws LuanException {
-		Object val = map.remove(key);
-		if( val!=null && !(val instanceof LuanTable) )
-			throw new LuanException( "parameter '"+key+"' must be a table" );
-		return (LuanTable)val;
-	}
-
-	private static Map getMap(Map map,String key) throws LuanException {
-		LuanTable t = getTable(map,key);
+	private static Map removeMap(Map map,String key) throws LuanException {
+		LuanTable t = Utils.removeTable(map,key);
 		return t==null ? null : t.asMap();
 	}