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Add some docstrings, return annotations.

master
voussoir 2021-10-10 12:06:54 -07:00
parent 6edba068e5
commit a94de2adde
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GPG Key ID: 5F7554F8C26DACCB
1 changed files with 16 additions and 4 deletions
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20
voussoirkit/networktools.py
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@ -23,14 +23,14 @@ class NetworkToolsException(Exception):
class NoInternet(NetworkToolsException): class NoInternet(NetworkToolsException):
pass pass
def get_external_ip(): def get_external_ip() -> str:
url = 'https://voussoir.net/whatsmyip' url = 'https://voussoir.net/whatsmyip'
response = requests.get(url) response = requests.get(url)
response.raise_for_status() response.raise_for_status()
ip = response.text.strip() ip = response.text.strip()
return ip return ip
def get_lan_ip(): def get_lan_ip() -> str:
''' '''
thank you unknwntech thank you unknwntech
https://stackoverflow.com/a/166589 https://stackoverflow.com/a/166589
@ -47,7 +47,10 @@ def has_lan():
# Open a socket to the router # Open a socket to the router
raise NotImplementedError raise NotImplementedError
def has_internet(timeout=2): def has_internet(timeout=2) -> bool:
'''
Return True if an internet connection is available.
'''
socket.setdefaulttimeout(timeout) socket.setdefaulttimeout(timeout)
try: try:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
@ -56,7 +59,16 @@ def has_internet(timeout=2):
except socket.error as exc: except socket.error as exc:
return False return False
def wait_for_internet(timeout): def wait_for_internet(timeout) -> None:
'''
This function blocks until an internet connection is available, or the
timeout is reached.
Raises NoInternet if the timeout expires.
'''
if timeout <= 0:
raise ValueError(f'timeout should be greater than 0, not {timeout}.')
started = time.time() started = time.time()
while True: while True:
if time.time() - started >= timeout: if time.time() - started >= timeout: