Agents ignoring offline messages

[dmvieira]

• SPADE version: 3.1.4
• Python version: 3.7.7
• Operating System: Ubuntu 16.04

Description

When you send messages and agents are offline or in unavailable state are ignored when agent back to available state.

What I Did

• Send message and start receiver agent
• set_unavailable() agent, send a message to this agent, than set_available() agent

[javipalanca]

Yes, this is a feature of XMPP. You cannot send a message to an offline agent unless your server supports and has active the XEP-0136: Message Archiving.

[dmvieira]

But I'm using Ejabberd and its showing offiline messages, but when agent is up all messages are consumed and ignored

[javipalanca]

Hi. I was guessing why this issue happens and it is because supporting offline messages (XEP-0013: Flexible Offline Message Retrieval) requires a proactive action from the client (and also an implementation of the extension in the server side).
This action is not still included in SPADE, but since it is a good feature I'll try to include it in future releases following https://xmpp.org/extensions/xep-0013.html.