From b686dda4afa8f519830997dc88386a37e371d47e Mon Sep 17 00:00:00 2001
From: Kim Alvefur <zash@zash.se>
Date: Mon, 16 Aug 2021 11:37:51 +0200
Subject: mod_s2s: Fire 's2s-ondrain' event, mirroring mod_c2s

Signals that any pending outgoing stanzas that were in the write buffer
have at least been sent off to the Kernel and maybe even sent out over
the network.

See 7a703af90c9c for mod_c2s commit
---
 plugins/mod_s2s.lua | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'plugins')

diff --git a/plugins/mod_s2s.lua b/plugins/mod_s2s.lua
index 1e0fb955..75eb15ca 100644
--- a/plugins/mod_s2s.lua
+++ b/plugins/mod_s2s.lua
@@ -853,6 +853,13 @@ function listener.onreadtimeout(conn)
 	end
 end
 
+function listener.ondrain(conn)
+	local session = sessions[conn];
+	if session then
+		return (hosts[session.host] or prosody).events.fire_event("s2s-ondrain", { session = session });
+	end
+end
+
 function listener.register_outgoing(conn, session)
 	sessions[conn] = session;
 	initialize_session(session);
-- 
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