From d11eccefc0d09a3221e7efb86815bdda5423ce39 Mon Sep 17 00:00:00 2001
From: Vittorio Palmisano <vpalmisano@gmail.com>
Date: Wed, 17 Mar 2021 14:32:14 +0100
Subject: [PATCH 1/2] added cache control header for GET requests

---
 server/config/config.example.js |  3 +++
 server/server.js                | 17 ++++++++++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/server/config/config.example.js b/server/config/config.example.js
index b44e841e..20ed1aff 100644
--- a/server/config/config.example.js
+++ b/server/config/config.example.js
@@ -364,6 +364,9 @@ module.exports =
 	requestTimeout       : 20000,
 	// Socket retries when timeout
 	requestRetries       : 3,
+	// If > 0, sets a cache-control max-age (in seconds) to the GET response
+	// headers.
+	getRequestsCachePeriod : 0,
 	// Mediasoup settings
 	mediasoup            :
 	{
diff --git a/server/server.js b/server/server.js
index 02dfaee5..cdc766f5 100755
--- a/server/server.js
+++ b/server/server.js
@@ -87,12 +87,27 @@ const tls =
 const app = express();
 
 app.use(helmet.hsts());
-const sharedCookieParser=cookieParser();
+const sharedCookieParser = cookieParser();
 
 app.use(sharedCookieParser);
 app.use(bodyParser.json({ limit: '5mb' }));
 app.use(bodyParser.urlencoded({ limit: '5mb', extended: true }));
 
+if (config.getRequestsCachePeriod)
+{
+	app.use((req, res, next) => {
+		if (req.method === 'GET')
+		{
+			res.set('Cache-control', `public, max-age=${config.getRequestsCachePeriod}`)
+		}
+		else
+		{
+		res.set('Cache-control', 'no-store');
+		}
+		next();
+	});
+}
+
 const session = expressSession({
 	secret            : config.cookieSecret,
 	name              : config.cookieName,

From 874bc6c8a9d0e6fd5e7eccefc51299e7743ec6d4 Mon Sep 17 00:00:00 2001
From: Vittorio Palmisano <vpalmisano@gmail.com>
Date: Wed, 17 Mar 2021 14:33:51 +0100
Subject: [PATCH 2/2] fixed comparison

---
 server/server.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/server.js b/server/server.js
index cdc766f5..5fdbb733 100755
--- a/server/server.js
+++ b/server/server.js
@@ -93,7 +93,7 @@ app.use(sharedCookieParser);
 app.use(bodyParser.json({ limit: '5mb' }));
 app.use(bodyParser.urlencoded({ limit: '5mb', extended: true }));
 
-if (config.getRequestsCachePeriod)
+if (config.getRequestsCachePeriod > 0)
 {
 	app.use((req, res, next) => {
 		if (req.method === 'GET')