#!/usr/bin/env bash

#  Author https://github.com/rsvp // orginal  script at https://gist.github.com/rsvp/1171304 

set -u

# ^ unbound (i.e. unassigned) variables shall be errors.

set -e

# ^ error checking :: Highly Recommended (caveat: you can't check $? later).



 

url=${1:-'http://www.google.com'}

timeout=${2:-'3'}

# ^in seconds

flag=${3:-'--status'}

 

# curl options, e.g. -L to follow redirects

arg4=${4:-''}

arg5=${5:-''}

arg6=${6:-''}

arg7=${7:-''}

curlops="$arg4 $arg5 $arg6 $arg7"

 

# __________ get the CODE which is numeric:

code=`echo $(curl --write-out %{http_code} --silent -S --connect-timeout $timeout \

--no-keepalive $curlops --output /dev/null $url)`

# though curl is --silent, -S will show its errors.

 

# __________ get the STATUS (from code) which is human interpretable:

case $code in

000) status="Not responding within $timeout seconds" ;;

100) status="Informational: Continue" ;;

101) status="Informational: Switching Protocols" ;;

200) status="Successful: OK within $timeout seconds" ;;

201) status="Successful: Created" ;;

202) status="Successful: Accepted" ;;

203) status="Successful: Non-Authoritative Information" ;;

204) status="Successful: No Content" ;;

205) status="Successful: Reset Content" ;;

206) status="Successful: Partial Content" ;;

300) status="Redirection: Multiple Choices" ;;

301) status="Redirection: Moved Permanently" ;;

302) status="Redirection: Found residing temporarily under different URI" ;;

303) status="Redirection: See Other" ;;

304) status="Redirection: Not Modified" ;;

305) status="Redirection: Use Proxy" ;;

306) status="Redirection: status not defined" ;;

307) status="Redirection: Temporary Redirect" ;;

400) status="Client Error: Bad Request" ;;

401) status="Client Error: Unauthorized" ;;

402) status="Client Error: Payment Required" ;;

403) status="Client Error: Forbidden" ;;

404) status="Client Error: Not Found" ;;

405) status="Client Error: Method Not Allowed" ;;

406) status="Client Error: Not Acceptable" ;;

407) status="Client Error: Proxy Authentication Required" ;;

408) status="Client Error: Request Timeout within $timeout seconds" ;;

409) status="Client Error: Conflict" ;;

410) status="Client Error: Gone" ;;

411) status="Client Error: Length Required" ;;

412) status="Client Error: Precondition Failed" ;;

413) status="Client Error: Request Entity Too Large" ;;

414) status="Client Error: Request-URI Too Long" ;;

415) status="Client Error: Unsupported Media Type" ;;

416) status="Client Error: Requested Range Not Satisfiable" ;;

417) status="Client Error: Expectation Failed" ;;

500) status="Server Error: Internal Server Error" ;;

501) status="Server Error: Not Implemented" ;;

502) status="Server Error: Bad Gateway" ;;

503) status="Server Error: Service Unavailable" ;;

504) status="Server Error: Gateway Timeout within $timeout seconds" ;;

505) status="Server Error: HTTP Version Not Supported" ;;

*) echo " !! httpstatus: status not defined." && exit 1 ;;

esac

 

case $flag in

--status) echo "$code $status" ;;

-s) echo "$code $status" ;;

--code) echo "$code" ;;

-c) echo "$code" ;;

*) echo " !! httpstatus: bad flag" && exit 1 ;;

esac

 

exit 0