Making an http request in bash (without CURL or Wget)

tcp_request.sh

#!/bin/bash

#Sample usage: HOST=google.com ./tcp_request.sh

# Open a file descriptor 3 for input and output to tcp host and port 80
exec 3<>/dev/tcp/$HOST/80

lines=(
        'GET /push_archive HTTP/1.1'
        "Host: $HOST"
        'Connection: close'
        ''
)

# Write each HTTP header line to socket
printf '%s\r\n' "${lines[@]}" >&3

# Read all output to stdout
while read -r data <&3; do
        echo "got server data: $data"   
done

# Close the file descriptor 3
exec 3>&-