http-response-headers.sh

#!/usr/bin/env bash

##
## Usage:
##   http-response-headers.sh 'http://www.example.com/test/' '127.0.0.1'
##

#!/usr/bin/env bash

URL="$1"
IP="$2"

## http://stackoverflow.com/a/6174447
# extract the protocol
proto="$(echo $URL | grep :// | sed -e's,^\(.*://\).*,\1,g')"
# remove the protocol -- updated
url=$(echo $URL | sed -e s,$proto,,g)
# extract the user (if any)
user="$(echo $url | grep @ | cut -d@ -f1)"
# extract the host -- updated
host=$(echo $url | sed -e s,$user@,,g | cut -d/ -f1)
# by request - try to extract the port
port="$(echo $host | sed -e 's,^.*:,:,g' -e 's,.*:\([0-9]*\).*,\1,g' -e 's,[^0-9],,g')"
host="$(echo $host | sed -e 's,:\([0-9]*\).*$,,g')"
# extract the path (if any)
path="$(echo $url | grep / | cut -d/ -f2-)"

#echo "url: $url"
#echo "  proto: $proto"
#echo "  user: $user"
#echo "  host: $host"
#echo "  port: $port"
#echo "  path: $path"

IP_URL="$proto"
if [ -n "$user" ]; then
	IP_URL="$IP_URL$user@"
fi
IP_URL="$IP_URL$IP"
if [ -n "$port" ]; then
	IP_URL="$IP_URL:$port"
fi
IP_URL="$IP_URL/$path"

echo
curl --silent -v -k -H"Host: $host" "$IP_URL" 2>&1 >/dev/null | grep '^<'
echo