paranoid programming for checking socket

scripts/app_start.sh

@@ -18,14 +18,13 @@ supervisorctl add $APP_NAME-$DEPLOYMENT_ID
 
 loop_counter=0
 while true; do
-    SOCKET_EXISTS=`test -e "/tmp/$APP_NAME-$DEPLOYMENT_ID.sock" && echo 'yes' || echo 'no'`
     # check to see if the socket file that the gunicorn process that is running
     # the app has been created. If not, wait for a second.
-    if [[ $SOCKET_EXISTS == 'yes' ]]; then
+    if [[ -e "/tmp/$APP_NAME-${DEPLOYMENT_ID}.sock" ]]; then
 
         # Pipe an HTTP request into the netcat tool (nc) and grep the response
         # for the deployment ID. If it's not there, wait for a second.
-        running_app=`printf "GET /pong/ HTTP/1.1 \r\nHost: localhost \r\n\r\n" | nc -U /tmp/$APP_NAME-${DEPLOYMENT_ID}.sock | grep -e "$DEPLOYMENT_ID" || echo 'Bad deployment'`
+        running_app=`printf "GET /pong/ HTTP/1.1 \r\nHost: localhost \r\n\r\n" | nc -U /tmp/$APP_NAME-${DEPLOYMENT_ID}.sock | grep -e "$DEPLOYMENT_ID" -e 'Bad deployment*' || echo 'unknown error'`
         echo $running_app
         if [[ $running_app == $DEPLOYMENT_ID ]] ; then
             echo "App matching $DEPLOYMENT_ID started"