kurl

function kurl() {
  # URLをパース
  read proto server path <<<$(echo ${1//// })
  DOC=/${path// //}
  HOST=${server//:*}
  PORT=${server//*:}
  [[ x"${HOST}" == x"${PORT}" ]] && PORT=80

  # /dev/tcp/~をfd3で開く
  exec 3<>/dev/tcp/${HOST}/$PORT

  # HTTPリクエストを送る
  echo -en "GET ${DOC} HTTP/1.0\r\nHost: ${HOST}\r\n\r\n" >&3

  # レスポンスを読み取る
  (while read line; do
    [[ "$line" == $'\r' ]] && break
   done && cat) <&3

   # #3 fdをクローズする
   exec 3>&-
}

This script is download file from HTTP.

You can use this command like kurl http://mysite:8000/myscript.sh.
This script isn't adopt HTTPS.