curl-post-error-detecting

#!/bin/bash

HEADERDUMP="/tmp/headerdump.txt"
SAVEFILE="/tmp/httpfile"
HTTPSTATUS=""

curl -X POST "$1" -d "$2" -D $HEADERDUMP >$SAVEFILE 2>/dev/null
EXITCODE=$?
if [ $EXITCODE -ne 0 ]; then
    echo "CURL error $EXITCODE"
else
    HTTPSTATUS=`cat $HEADERDUMP|head -1|awk '{print $2}'`

    if [ "$HTTPSTATUS" == "200" ];then
    echo "OK"
    else
    echo "HTTP error $HTTPSTATUS"
    fi
fi