| # An alternative to DDNS | |
| # | |
| # What if you want to access your local home server from the internet but have a dynamic ip address? | |
| # Typically you use dynamic domain name resolution (ddns) for this. There are serveral providers out | |
| # there offering you a ddns subdomain. However, you have to create an account, spent money or accept | |
| # limitations of the provider. | |
| # | |
| # So, here an alternative: | |
| # – Create a Google Formular containing one input field: your ip address. | |
| # – From your local server, determine your current external ip address (e.g. by retrieving it from | |
| # a website). | |
| # – Whenever your ip changes, paste it to your google formular. | |
| # – Now, you only have to store/know a permanent link to your google sheet to read the current ip of | |
| # your home server. | |
| # – The python script below implements the idea. Feel free to run it on your home server. | |
| # | |
| # – Dependencies: Python, curl, google account | |
| # – Usage: Make sure to edit the variables formular_url and field_name according to your formular. | |
| #!/usr/bin/env python | |
| import subprocess | |
| import time | |
| if __name__ == '__main__': | |
| # The url to the formular | |
| formular_url = 'https://docs.google.com/forms/d/1POTEbzxEou_ZKpMM6M*************K5fNrkFX4/formResponse' | |
| # Inspect the source code of your Google Formular website to get the name of your field | |
| field_name = 'entry.1461371975'#my example | |
| old_ip = '' | |
| while True: | |
| try: | |
| current_ip = subprocess.check_output(['curl', 'ipecho.net/plain']) | |
| if old_ip != current_ip: | |
| subprocess.call(['curl', '–data', field_name + '=' + current_ip, formular_url]) | |
| old_ip = current_ip | |
| except Exception as e: | |
| pass | |
| time.sleep(10*60) |
