Added -N flag to nc invocation

reporters/prometheus.sh

@@ -41,7 +41,7 @@ prometheus_httpd () {
   echo "Serving prometheus HTTP endpoint at http://localhost:$PROMETHEUS_PORT/metrics"
   while true; do
     local REQUEST RESPONSE
-    cat $prometheus_httpd_fifo | nc -l $PROMETHEUS_PORT | while read line; do
+    cat $prometheus_httpd_fifo | nc -N -l $PROMETHEUS_PORT | while read line; do
       line=$(echo "$line" | tr -d '[\r\n]')
       # extract the request
       if echo "$line" | grep -qE '^GET /'; then
@@ -80,4 +80,4 @@ docs () {
   echo "$PROMETHEUS_METRIC_NAME{metric=\"<metric>\"} <value> <timestamp>"
   echo "PROMETHEUS_PORT=$PROMETHEUS_PORT"
   echo "PROMETHEUS_METRIC_NAME=$PROMETHEUS_METRIC_NAME"
-}
+}