Replace longpolling with websocket

Replace longpolling with websocket in nginx file.

odoo_install.sh

@@ -181,6 +181,13 @@ if [ $OE_VERSION > "11.0" ];then
 else
     sudo su root -c "printf 'xmlrpc_port = ${OE_PORT}\n' >> /etc/${OE_CONFIG}.conf"
 fi
+
+if [ $OE_VERSION > "15.0" ];then
+    sudo su root -c "printf 'gevent_port = ${LONGPOLLING_PORT}\n' >> /etc/${OE_CONFIG}.conf"
+else
+    sudo su root -c "printf 'longpolling_port = ${LONGPOLLING_PORT}\n' >> /etc/${OE_CONFIG}.conf"
+fi
+
 sudo su root -c "printf 'logfile = /var/log/${OE_USER}/${OE_CONFIG}.log\n' >> /etc/${OE_CONFIG}.conf"
 
 if [ $IS_ENTERPRISE = "True" ]; then
@@ -282,6 +289,12 @@ if [ $INSTALL_NGINX = "True" ]; then
   echo -e "\n---- Installing and setting up Nginx ----"
   sudo apt install nginx -y
   cat <<EOF > ~/odoo
+
+map $http_upgrade $connection_upgrade {
+  default upgrade;
+  ''      close;
+}
+
 server {
   listen 80;
 
@@ -335,8 +348,15 @@ server {
     proxy_redirect off;
   }
 
-  location /longpolling {
+ # Redirect websocket requests to odoo gevent port
+  location /websocket {
     proxy_pass http://127.0.0.1:$LONGPOLLING_PORT;
+    proxy_set_header Upgrade \$http_upgrade;
+    proxy_set_header Connection \$connection_upgrade;
+    proxy_set_header X-Forwarded-Host \$host;
+    proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto \$scheme;
+    proxy_set_header X-Real-IP \$remote_addr;
   }
 
   location ~* .(js|css|png|jpg|jpeg|gif|ico)$ {