The group chat invitation packet extension is used to invite other users to a group chat room.

• Inviting Other Users
• Listen for Invitations

JEP related: N/A -- this protocol is outdated now that the Multi-User Chat (MUC) JEP is available (JEP-45). However, most existing clients still use this older protocol. Once MUC support becomes more widespread, this API may be deprecated.

To use the GroupChatInvitation packet extension to invite another user to a group chat room, address a new message to the user and set the room name appropriately, as in the following code example:

Message message = new Message("user@chat.example.com");
message.setBody("Join me for a group chat!");
message.addExtension(new GroupChatInvitation("room@chat.example.com"));
con.sendPacket(message);

<x xmlns="jabber:x:conference" jid="room@chat.example.com"/>

To listen for group chat invitations, use a PacketExtensionFilter for the x element name and jabber:x:conference namespace, as in the following code example:

PacketFilter filter = new PacketExtensionFilter("x", "jabber:x:conference");
// Create a packet collector or packet listeners using the filter...