cURL Bash Aliases

curl-bash-aliases.sh

# Print the headers of URL.
alias curl-headers='curl ${CURL_ARGS[@]} --dump-header -'
# Print Time to First Byte of URL.
alias curl-ttfb='curl ${CURL_ARGS[@]} --write-out "%{time_starttransfer}\n"'
# Print bytes file size of URL.
alias curl-size='curl ${CURL_ARGS[@]} --write-out "%{size_download}\n"'
# https://ec.haxx.se/usingcurl-writeout.html
alias curl-timing='curl ${CURL_ARGS[@]} --write-out "
    namelookup:  %{time_namelookup} Start to name resolving
       connect:  %{time_connect} Start to TCP connect to host
    appconnect:  %{time_appconnect} Start to TLS
   pretransfer:  %{time_pretransfer} Start to file transfer is about to begin
      redirect:  %{time_redirect}
 starttransfer:  %{time_starttransfer} Start to first byte
                    ----------
         total:  %{time_total}
"'
# Test with:
# curl -H "Origin: http://example.com" \
#   -H "Access-Control-Request-Method: POST" \
#   -H "Access-Control-Request-Headers: X-Requested-With" \
#   -X OPTIONS --verbose \
#   https://www.googleapis.com/discovery/v1/apis?fields=
# Simple API that allows this stuff.
# https://jsonplaceholder.typicode.com/todos/1
alias curl-cors='curl ${CURL_ARGS[@]} --dump-header - -H "Origin: http://example.com"'

curl-diff() {
    diff \
        <(curl --silent "$1") \
        <(curl --silent "$2")
}

# Display a poor diff between two HTTP headers: https://www.computerhope.com/unix/udiff.htm
# Inspired by: https://twitter.com/bagder/status/1128041424291803143
curl-diff-headers () {
    ARGS=(
        --silent
        --output /dev/null
        --dump-header -
    )

    diff -y \
        <(curl ${ARGS[@]} "$1" | sort) \
        <(curl ${ARGS[@]} "$2" | sort)
}