Add small utils

utils/build.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+VERSIONS=(1.14.2 1.16.1 1.18.0 1.19.6)
+
+for VERSION in "${VERSIONS[@]}"
+do
+
+  cd utils/
+  URL=https://nginx.org/download/nginx-${VERSION}.tar.gz
+
+  whereis wget > /dev/null 2>&1
+
+  if [ $? -ne 0 ]; then
+    echo "Missing wget"
+    exit 1
+  fi
+
+  wget $URL 
+  rm -rf ../vendor
+  mkdir -p ../vendor
+  mv nginx-$VERSION.tar.gz ../vendor/
+  cd ../vendor/
+  tar -xvzf nginx-$VERSION.tar.gz
+  cd nginx-$VERSION
+  ./configure --add-module=../.. --prefix=/usr/local/nginx
+  make && sudo make install
+  cd ../../
+  sudo cp nginx.conf /usr/local/nginx/conf/nginx.conf
+
+  sudo /usr/local/nginx/sbin/nginx -t
+
+  if [ $? -ne 0 ]; then
+    echo "Problems with version $VERSION"
+    exit 1
+  fi
+
+  sudo rm -rf /usr/local/nginx
+done

utils/sub_client.py

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+import zmq
+
+context = zmq.Context()
+socket = context.socket(zmq.SUB)
+socket.bind("tcp://*:5556")
+
+socket.subscribe("/topic")
+
+i = 0
+
+while True:
+    message = socket.recv()
+    print i, message
+    i = i + 1