--- a/plugins/mod_s2s/mod_s2s.lua	Fri May 08 23:54:17 2020 +0200
+++ b/plugins/mod_s2s/mod_s2s.lua	Fri May 08 23:55:51 2020 +0200
@@ -455,11 +455,16 @@
 	end
 end
 
-function stream_callbacks.streamclosed(session)
+function stream_callbacks._streamclosed(session)
 	(session.log or log)("debug", "Received </stream:stream>");
 	session:close(false);
 end
 
+function stream_callbacks.streamclosed(session, attr)
+	-- run _streamclosed in async context
+	session.thread:run({ stream = "closed", attr = attr });
+end
+
 function stream_callbacks.error(session, error, data)
 	if error == "no-stream" then
 		session.log("debug", "Invalid opening stream header (%s)", (data:gsub("^([^\1]+)\1", "{%1}")));
@@ -568,6 +573,8 @@
 			core_process_stanza(session, stanza);
 		elseif stanza.stream == "opened" then
 			stream_callbacks._streamopened(session, stanza.attr);
+		elseif stanza.stream == "closed" then
+			stream_callbacks._streamclosed(session, stanza.attr);
 		end
 	end, runner_callbacks, session);