How to sync my contacts to Openfire using Smack? Or how to know which contact(from my contactlist) is registered on openfire?

Question

I'm working on a chat app, and on initial stage of the chatting phase. I come to the point where i want to filter my contacts in two parts like Registered users and Unregistered users.like whatsapp and telegram does.In my app users can register themselves by Phone number. Should i compare all registered users from my contact-list? if yes than Is it good way to compare? if there are thousands of registered users.

Answer 1

您可以使用“ User Search插件来检查用户是否在openfire上注册。