From 4335d6fb82186b8f4c6a706561171a230d550f4a Mon Sep 17 00:00:00 2001
From: Patrice Brend'amour <patrice@brendamour.net>
Date: Tue, 21 Sep 2021 23:58:34 +0200
Subject: [PATCH] applied requested changes

---
 Vagrantfile | 26 ++++++++++++++++++++++++++
 ufw-docker  |  2 +-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/Vagrantfile b/Vagrantfile
index fa062d9..c07b29b 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -125,6 +125,29 @@ DOCKERFILE
         ufw-docker allow public_webapp
     SHELL
 
+    master.vm.provision "multiple-network", type: 'shell', inline: <<-SHELL
+      set -euo pipefail
+      if ! docker network ls | grep -F foo-internal; then
+          docker network create --internal foo-internal
+      fi
+      if ! docker network ls | grep -F bar-external; then
+          docker network create bar-external
+      fi
+
+      for app in internal-multinet-app:7000 public-multinet-app:17070; do
+          if ! docker inspect "${app%:*}" &>/dev/null; then
+              docker run -d --restart unless-stopped --name "${app%:*}" \
+                         -p "${app#*:}":80 --env name="${app}" \
+                         --network foo-internal \
+                         192.168.56.130:5000/chaifeng/hostname-webapp
+              docker network connect bar-external "${app%:*}"
+          fi
+      done
+
+      ufw-docker allow public-multinet-app 80 bar-external
+      ufw-docker allow internal-multinet-app 80 foo-internal
+    SHELL
+
     master.vm.provision "swarm-webapp", type: 'shell', inline: <<-SHELL
       set -euo pipefail
         for name in public:29090 local:9000; do
@@ -166,6 +189,9 @@ DOCKERFILE
         test-webapp "$server:18080"
         ! test-webapp "$server:8000"
 
+        test-webapp "$server:17070" # multiple networks app
+        ! test-webapp "$server:7000" # internal multiple networks app
+
         test-webapp "$server:29090"
         ! test-webapp "$server:9000"
 
diff --git a/ufw-docker b/ufw-docker
index d49770b..bfa3399 100755
--- a/ufw-docker
+++ b/ufw-docker
@@ -107,7 +107,7 @@ function ufw-docker--add-rule() {
     local INSTANCE_IP_ADDRESS="$2"
     local PORT="$3"
     local PROTO="$4"
-    local NETWORK="$5"
+    local NETWORK="${5:-}"
 
     declare comment