From f13e66b453dab6de7efdf9223e73d0508328d297 Mon Sep 17 00:00:00 2001
From: Brian Gough <brian.gough@overleaf.com>
Date: Wed, 14 Aug 2019 15:34:23 +0100
Subject: [PATCH] fix client count so that result is zero when all clients have
 left

---
 services/real-time/app/coffee/Router.coffee | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/services/real-time/app/coffee/Router.coffee b/services/real-time/app/coffee/Router.coffee
index 11170d692d..a7ed73c981 100644
--- a/services/real-time/app/coffee/Router.coffee
+++ b/services/real-time/app/coffee/Router.coffee
@@ -78,7 +78,7 @@ module.exports = Router =
 
 			client.on "disconnect", () ->
 				metrics.inc('socket-io.disconnect')
-				metrics.gauge('socket-io.clients', io.sockets.clients()?.length)
+				metrics.gauge('socket-io.clients', io.sockets.clients()?.length - 1)
 				WebsocketController.leaveProject io, client, (err) ->
 					if err?
 						Router._handleError null, err, client, "leaveProject"