added for socket io behind reverse proxy

nginx/webrtc

@@ -13,6 +13,13 @@ server {
 	ssl_certificate_key /etc/ssl/key.pem;
 
 	location / {
+		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+		proxy_set_header Host $host;
+
 		proxy_pass http://127.0.0.1:3000/;
+
+		proxy_http_version 1.1;
+		proxy_set_header Upgrade $http_upgrade;
+		proxy_set_header Connection "upgrade";
 	}
 }