# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1775656598 -7200
# Node ID 668b1f0a4dc6ab2079be1f21ce42d1673df2a70c
# Parent  5fb466693e8583e1eaf5bc3e218f712e59cce3f2
mod_c2s_limit_sessions: Fix check when it's the first connection

Creation of the sessions[username] entry happens after the
"pre-resource-bind" event, before the "resource-bind" event.
Thus, for a users first connection, it may not exist.
This led to an 'attempt to index a nil value' error, fixed here.

diff -r 5fb466693e85 -r 668b1f0a4dc6 mod_c2s_limit_sessions/mod_c2s_limit_sessions.lua
--- a/mod_c2s_limit_sessions/mod_c2s_limit_sessions.lua	Tue Apr 07 21:10:54 2026 +0200
+++ b/mod_c2s_limit_sessions/mod_c2s_limit_sessions.lua	Wed Apr 08 15:56:38 2026 +0200
@@ -7,6 +7,9 @@
 local sessions = prosody.hosts[module.host].sessions;
 module:hook("pre-resource-bind", function(event)
 	local session = event.session;
+	if not sessions[session.username] then
+		return -- zero sessions
+	end
 	if count(next, sessions[session.username].sessions) >= max_resources then
 		event.error = { condition = "policy-violation", text = "Too many active connections to this account" };
 		session:close(event.error);