# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1625231889 -7200
# Node ID 8da3db1e82a9d756fadc07be95daac1ae5ad588b
# Parent  0e6e176cb5723c9cc125bde723c7feb293382718
backend: advertise RSM on disco

diff -r 0e6e176cb572 -r 8da3db1e82a9 sat_pubsub/backend.py
--- a/sat_pubsub/backend.py	Sun Jun 06 19:42:57 2021 +0200
+++ b/sat_pubsub/backend.py	Fri Jul 02 15:18:09 2021 +0200
@@ -1851,7 +1851,13 @@
     # FIXME: upstream must be fixed so we can use custom (non pubsub#) disco features
 
     def getDiscoInfo(self, requestor, service, nodeIdentifier=''):
-        return [disco.DiscoFeature(pubsub.NS_ORDER_BY), disco.DiscoFeature(const.NS_FDP)]
+        return [
+            disco.DiscoFeature(rsm.NS_RSM),
+            # cf. https://xmpp.org/extensions/xep-0060.html#subscriber-retrieve-returnsome
+            disco.DiscoFeature(const.NS_PUBSUB_RSM),
+            disco.DiscoFeature(pubsub.NS_ORDER_BY),
+            disco.DiscoFeature(const.NS_FDP)
+        ]
 
     def getDiscoItems(self, requestor, service, nodeIdentifier=''):
         return []
diff -r 0e6e176cb572 -r 8da3db1e82a9 sat_pubsub/const.py
--- a/sat_pubsub/const.py	Sun Jun 06 19:42:57 2021 +0200
+++ b/sat_pubsub/const.py	Fri Jul 02 15:18:09 2021 +0200
@@ -55,6 +55,7 @@
 NS_GROUPBLOG_PREFIX = 'urn:xmpp:groupblog:'
 NS_ITEM_CONFIG = "http://jabber.org/protocol/pubsub#item-config"
 NS_ATOM = "http://www.w3.org/2005/Atom"
+NS_PUBSUB_RSM = "http://jabber.org/protocol/pubsub#rsm"
 NS_FORWARD = 'urn:xmpp:forward:0'
 NS_FDP = 'urn:xmpp:fdp:0'
 NS_SCHEMA_RESTRICT = 'https://salut-a-toi/protocol/schema#restrict:0'