bash function to perform an HTTP request and check status

http-req.sh

#!/usr/bin/env bash

set -o errexit
set -o pipefail
[[ "$DEBUG" == 'true' ]] && set -o xtrace

# $1: expected http code
# $2: cookie file to use
function httpReq() {
  local _expectedHTTPCode
  _expectedHTTPCode=$1

  local _cookieFile
  _cookieFile=$2

  local _outputFile
  _outputFile=$(mktemp -t http_output)

  local _curlCommand
  _curlCommand=(
    curl -s -o "${_outputFile}"
    -w '%{http_code}'
    -c "${_cookieFile}"
    -b "${_cookieFile}"
    "${@:3}"
  )

  local _httpCode
  _httpCode=$("${_curlCommand[@]}")

  if [[ ${_httpCode} -ne ${_expectedHTTPCode} ]]; then
    echo "Expected HTTP code ${_expectedHTTPCode} but got ${_httpCode}" >&2
    echo -n "  Response: " >&2
    cat "${_outputFile}" >&2
    echo "" >&2
    echo -n "  Command: " >&2
    echo -n "${_curlCommand[@]}" >&2
    echo "" >&2
    rm "${_outputFile}"
    exit 1
  fi

  cat "${_outputFile}"
  rm "${_outputFile}"
}