Requests library failure in name resolution/Network is unreachable - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: General Coding Help (https://python-forum.io/forum-8.html) +--- Thread: Requests library failure in name resolution/Network is unreachable (/thread-30495.html) |
Requests library failure in name resolution/Network is unreachable - zazas321 - Oct-23-2020 Hello. I am using Requests library to make API requets to the internal server/database. I am making requests as following: while(1): URL_get_box_info = "https://factory.teltonika.lt/gorapi/v2/"+session_ID+"/boxes/tree/"+guid response_get_box_info = requests.get(URL_get_box_info) print("response get box info status code=",response_get_box_info.status_code) time.sleep(2)And everything seemed fine at first glance. However, as I was testing the system more and more, I have realized that ocassionally, evey 10,15 requets I am getting a "failure in name resolution" or "Connection refused" error and cannot understand what the problem is.. See the images below: https://ibb.co/m4sFhbr https://ibb.co/QFDbL07 I then went ahead and tried to making a request to https:/google.com, but the same problem apperas: while(1): response_get_box_info = requests.get("https://google.com") print("response get box info status code=",response_get_box_info.status_code) time.sleep(2)THe full error message: response get box info status code= 200 response get box info status code= 200 Traceback (most recent call last): File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 159, in _new_conn (self._dns_host, self.port), self.timeout, **extra_kw) File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 57, in create_connection for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM): File "/usr/lib/python3.7/socket.py", line 748, in getaddrinfo for res in _socket.getaddrinfo(host, port, family, type, proto, flags): socket.gaierror: [Errno -3] Temporary failure in name resolution During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 600, in urlopen chunked=chunked) File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 343, in _make_request self._validate_conn(conn) File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 841, in _validate_conn conn.connect() File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 301, in connect conn = self._new_conn() File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 168, in _new_conn self, "Failed to establish a new connection: %s" % e) urllib3.exceptions.NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0xb580ee50>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3/dist-packages/requests/adapters.py", line 449, in send timeout=timeout File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 638, in urlopen _stacktrace=sys.exc_info()[2]) File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 398, in increment raise MaxRetryError(_pool, url, error or ResponseError(cause)) urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='google.com', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0xb580ee50>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/pi/Desktop/lukas_programming/PTL_python/api_test.py", line 35, in <module> response_get_box_info = requests.get("https://google.com") File "/usr/lib/python3/dist-packages/requests/api.py", line 75, in get return request('get', url, params=params, **kwargs) File "/usr/lib/python3/dist-packages/requests/api.py", line 60, in request return session.request(method=method, url=url, **kwargs) File "/usr/lib/python3/dist-packages/requests/sessions.py", line 533, in request resp = self.send(prep, **send_kwargs) File "/usr/lib/python3/dist-packages/requests/sessions.py", line 646, in send r = adapter.send(request, **kwargs) File "/usr/lib/python3/dist-packages/requests/adapters.py", line 516, in send raise ConnectionError(e, request=request) requests.exceptions.ConnectionError: HTTPSConnectionPool(host='google.com', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0xb580ee50>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution'))Just to note, when I just simply go to browser and type API url, I am getting the correct response at all times, so it makes me think that it has to do with the requests library? I really do not know how to even start debugging this problem. I have read a few forums regarding this issue but none that would solve this RE: Requests library failure in name resolution/Network is unreachable - zazas321 - Oct-23-2020 I have connected to the same WIFI and ran the same python script on my laptop. No problems whatsoever. So the issue is not with requests library but with the raspberry PI. |