OfflineMessaging¶

• Add offline chat storage application to SylkServer
• Add failure routed to OpenSIPS for chat session request to SylkServer
• Answer session when offline,
• Send automatic answer with standard 'I am offline message'
• Keep session open for 60 seconds so that remote party has chance to write something if he did not already after connect
• Close session and save history
• Detect when user comes online
• Make new session to user that came online faking the original caller, deliver stored messages, hangup and wipe delivered messages