Home/ Questions/Can I fix the “socket.gaierror: [errno -2] name or service not known” or not?
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Liam Cochet
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Asked: 2022-05-17T13:01:53+00:00 In:

Can I fix the “socket.gaierror: [errno -2] name or service not known” or not?

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I encountered the following problem in completing my work:

File "C:\Users\Ubaid Parveez\AppData\Local\Programs\Python\Python36\lib\smtplib.py", line 336, in connect
  self.sock = self._get_socket(host, port, self.timeout)
  File "C:\Users\Ubaid Parveez\AppData\Local\Programs\Python\Python36\lib\smtplib.py", line 307, in _get_socket
  self.source_address)
  File "C:\Users\Ubaid Parveez\AppData\Local\Programs\Python\Python36\lib\socket.py", line 705, in create_connection
  for res in getaddrinfo(host, port, 1, SOCK_STREAM):
  File "C:\Users\Ubaid Parveez\AppData\Local\Programs\Python\Python36\lib\socket.py", line 748, in getaddrinfo
  for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
 socket.gaierror: [Errno 10047] getaddrinfo failed

Below is the code I ran:

SERVER_EMAIL = '[email protected]'
 EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
 EMAIL_HOST = 'smtp.gmail.com'
 EMAIL_HOST_PASSWORD = 'password_here'
 EMAIL_HOST_USER = SERVER_EMAIL
 EMAIL_PORT = 587
 EMAIL_USE_TLS = True
 DEFAULT_FROM_EMAIL = EMAIL_HOST_USER
class ContactView(generic.TemplateView):
  template_name = "contact.html"
 
  def post(self,request,*args,**kwargs):
  send_mail(
  'Subject here',
  'Here is the message.',
  EMAIL_HOST_USER,
  ['[email protected]'],
  fail_silently=False,
  )

What’s causing it, and how can it be resolved in the “socket.gaierror: [errno -2] name or service not known“ in the python?

django
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2 Answers

  1. Best Answer
    Expert

    The cause:

    The problem socket.gaierror: [Errno -2] Name or service not known signifies that the domain’s name resolution is failing (api.github.com).

    Name resolution can go wrong for a variety of reasons. Because you’ve turned off the internet, the reason is identity (Name or service not known).

    Solution:

    Gai (GetAddressInfo) is a component of glibc that is used to do name resolves (and using socket which can visualize). You can also change the settings in /etc/gai.conf.

    • 16

  2. Your problem is not popular and not easy to find the correct answer, however I will provide you the relevant expertise to get it in. I hope it help Socket programming is the process of connecting two nodes within the network to talk to one another. One socket(node) is listening on the port of a specific IP and another socket connects to the other socket to establish an internet connection. The server creates the listener socket, while the client is reaching out at the server. They form the core for the web browser. In simple words, there’s two components: a client and a server. Socket programming begins by downloading the socket library, and creating a basic socket.

    import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

    Also, here is sample for your reference

    # An example script to connect to Google using socket
# programming in Python
import socket # for socket
import sys

try:
   s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
   print ("Socket successfully created")
except socket.error as err:
   print ("socket creation failed with error %s" %(err))
    
# default port for socket
port = 80

try:
   host_ip = socket.gethostbyname('www.google.com')
except socket.gaierror:
   # this means could not resolve the host
   print ("there was an error resolving the host")
   sys.exit()

# connecting to the server
s.connect((host_ip, port))

print ("the socket has successfully connected to google")
    • 6

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