setCurrentState do not have to be returning duplicate state.

chatState.go

 	return
 }
 
-func setCurrentState(openID, procedure string, state chatState) (newState chatState, err error) {
+func setCurrentState(openID, procedure string, state chatState) (err error) {
 	state.OpenID = openID
 	state.Procedure = procedure
 
 		log.Println(err)
 		return
 	}
-	newState = state
 	return
 }
 
 		//skip saving sate
 		return
 	}
-	_, err = setCurrentState(openID, procedure, state)
+	err = setCurrentState(openID, procedure, state)
 	return
 }
+
+func isEndingState(state chatState) bool {
+	if isExpired(state.Expire) || state.Name == "" {
+		return true
+	}
+
+	if state.Name == "delete" {
+		return true
+	}
+	return false
+}

chatState_test.go

 	s.response = "somexml less than 2018bytes"
 
 	//save
-	n, err := setCurrentState(openID, procedure, s)
+	err := setCurrentState(openID, procedure, s)
 	AssertEqual(t, err, nil, "save state should be successful")
 
 	//read out
 	m, _ := getCurrentState(openID, procedure)
 
 	//compare
-	AssertEqual(t, m.Name, n.Name, "Name should be equal")
-	AssertEqual(t, m.Expire, n.Expire, "Expire should be equal")
+	AssertEqual(t, m.Name, s.Name, "Name should be equal")
+	AssertEqual(t, m.Expire, s.Expire, "Expire should be equal")
 	AssertEqual(t, m.Save["txt"], s.Save["txt"], "Message[txt] should be equal")
 	AssertEqual(t, m.Save["icon"], s.Save["icon"], "Message[icon] should be equal")
 	AssertEqual(t, m.OpenID, openID, "openID should be "+openID)
 	AssertEqual(t, m.response, "", "response should be empty")
 	AssertEqual(t, m.Procedure, procedure, "procedure should be "+procedure)
-	AssertEqual(t, m.Save["txt"], n.Save["txt"], "Message[txt] should be equal")
-	AssertEqual(t, m.Save["icon"], n.Save["icon"], "Message[icon] should be equal")
+	AssertEqual(t, m.Save["txt"], s.Save["txt"], "Message[txt] should be equal")
+	AssertEqual(t, m.Save["icon"], s.Save["icon"], "Message[icon] should be equal")
 
 	err = deleteChatState(openID, procedure)
 	AssertEqual(t, err, nil, "delete chatState should be good")
 	AssertEqual(t, s != nil, true, "TestDummy should return error")
 	s = startProcedure(openID, "TestEcho")
 	AssertEqual(t, s, nil, "TestEqual should return success")
+	//read it back
+	//TODO read it back and check it
 }