requests.get(invalid_url)
無効な URL をリクエストすると、次の例外がスローされることに気付きました。
Traceback (most recent call last):
File "/usr/lib/python3.4/socket.py", line 530, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known
During handling of the above exception, another exception occurred:
File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 607, in urlopen
raise MaxRetryError(self, url, e)
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='sparkandshine.me', port=80): Max retries exceeded with url: / (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)
During handling of the above exception, another exception occurred:
File "/usr/lib/python3/dist-packages/requests/adapters.py", line 378, in send
raise ConnectionError(e)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='sparkandshine.me', port=80): Max retries exceeded with url: / (Caused by <class 'socket.gaierror'>: [Errno -2] Name or service not known)
これらの例外をキャッチして、ドメイン名が登録されているかどうかを正確に判断できますか? ソースコードは次のとおりです。
#!/usr/bin/env python3
import http
import urllib3
import requests
url = 'http://example.com'
try :
r = requests.get(url)
except (http.client.HTTPException, urllib3.exceptions.MaxRetryError, requests.exceptions.ConnectionError):
print(url) #this domain name is not registered?