[Users] Presence information expires at presence server

Hi, Below is my scenario, User1 is the watcher and User2 is the presentity User1 sends SUBSCRIBE message to watch the presence inforamation of User2. User2 sends PUBLISH message, User1 gets notification. After first PUBLISH User2 does not refreshes its publication. Currently On expiry of presence information OpenSer sends NOTIFY with status as "closed" in the first tuple. Is this behaviour is correct ? Do we need to send NOTIFY with status as "closed" for each "tuple" ? What is the correct behaviour ? Also when we send PUBLISH with Expire header as "0", OpenSer sends NOTIFY with the XML body as it is in the first PUBLISH. Is it right behaviour ? Thanks in advance. Regards, Rajaram The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com