How to configure node at XMPP Publish Subscribe to deliver message to offline subscriber? <p>Publisher sent message_1 when subscriber online, and subscriber got it.</p> <p>Publisher sent message_2 when subscriber offline.</p> <p>Publisher sent message_3 when subscriber offline. Subscriber login, and just get message_3(last published item).</p> <p>How can i get message_2 and message_3 when subscriber login(online)? if i use retrive message, i will get all message(1,2,3) and that will no efficient bandwith.</p> <p>Please help me, i was stuck.</p>