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Errno 10061 : No connection could be made because the target machine actively refused it ( client - server )

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I have a problem with these client and server codes, I keep getting the [Errno 10061] No connection could be made because the target machine actively refused it
I'm running the server on a virtual machine with Windows XP SP3 and the client on Windows 7 64bit, my python version is 2.7.3. What I want to know is how should I edit the code to use the client and server on different networks! Thanks!
server :
#!/usr/bin/python           # This is server.py file
import socket               # Import socket module
s = socket.socket()         # Create a socket object
host = '0.0.0.0' # Get local machine name
port = 12345                # Reserve a port for your service.
print 'Server started!'
print 'Waiting for clients...'
s.bind((host, port))        # Bind to the port
s.listen(5)                 # Now wait for client connection.
c, addr = s.accept()     # Establish connection with client.
print 'Got connection from', addr
while True:
  msg = c.recv(1024)
  print addr, ' >> ', msg
  msg = raw_input('SERVER >> ')
  c.send(msg);
  #c.close()                # Close the connection
client :
#!/usr/bin/python           # This is client.py file
import socket               # Import socket module
s = socket.socket()         # Create a socket object
host = socket.gethostname() # Get local machine name
port = 12345                # Reserve a port for your service.
print 'Connecting to ', host, port
s.connect((host, port))
while True:
  msg = raw_input('CLIENT >> ')
  s.send(msg)
  msg = s.recv(1024)
  print 'SERVER >> ', msg
#s.close                     # Close the socket when done
PS : code is from internet.
                actively refused it implies that the server machine's firewall blocked the connection, probably unrelated to code.
– Michael Berkowski
                Oct 20, 2012 at 22:34
10061 is WSAECONNREFUSED, 'connection refused', which means there was nothing listening at the IP:port you tried to connect to.
There was a firewall product around the year 2000 that issued refusals instead of ignoring incoming connections to blocked ports, but this was quickly recognised as an information leak to attackers and corrected or withdrawn.
Hint: actively refused sounds like somewhat deeper technical trouble, but...
...actually, this response (and also specifically errno:10061) is also given, if one calls the bin/mongo executable and the mongodb service is simply not running on the target machine. This even applies to local machine instances (all happening on localhost). 
➪ Always rule out for this trivial possibility first, i.e. simply by using the command line client to access your db.
See here.
So I was facing the same issue,
and the solution that worked for me was...
I am assuming your server and client program are written in python.
First, open one python shell
open and run the Server program first
then open another different python shell
open and run the Client program here
done !!
Using the examples from: https://docs.python.org/3.2/library/socketserver.html
I determined that I needed to set the HOST port to the machine I had the server program running on.   So TCPServer on 192.168.0.1 HOST = TCPServer IP 192.168.0.1 then I had to set the TCPClient side to point to the TCPServer IP. So the TCPClient HOST value = 192.168.0.1 - Sorry, that's the best I can describe it.
                Yeah, it worked for me but how to start a different python idle shell that is by just right-clicking on the idle symbol on the taskbar then click on idle3.8 then it opened a new shell.
– AMI CHARADAVA
                Mar 27, 2021 at 21:09
instead of localhost of '0.0.0.0', use local network address as host in case of both - the server and the client - code.
host = '192.168.12.12'
port = 12345
use this host address when binding and connecting to the socket.
server.bind((host, port))
client.connect((host, port))
this change solved the issue for me.
The solution is to use the same IP and Port number in both client and server. 
Try, in client to use 
    TCP_IP = 'write the ip number here' 
    TCP_PORT = writ the port number here 
    s.connect((TCP_IP, TCP_PORT))
if you have remote server installed on you machine. give server.py host as "localhost" and the port number.
then client side , you have to give local ip- 127.0.0.1 and port number.
then its works
                The question is about 'different networks', and this answer won't even work on different hosts in the same network, let alone different networks.
– user207421
                Jun 6, 2017 at 9:58
This could be because of proxy or firewall. If it's proxy, then you need to specify proxy setting at entry point of your code or project.
import os #for proxy
proxy = 'http://10.XX.XX.XX:8X8X' #your own proxy 'http://<user>:<pass>@<proxy>:<port>'
os.environ['http_proxy'] = proxy 
os.environ['HTTP_PROXY'] = proxy
os.environ['https_proxy'] = proxy
os.environ['HTTPS_PROXY'] = proxy
#rest of code .....
                In the case that the server had been listening at say 127.0.0.1. It isn't a universal solution to all cases of this error.
– user207421
                Jun 7, 2021 at 8:32
The first: Please make sure your port '12345' is opening and then
when you using a different network. You have to use the IP address in LAN. Don't use the 'localhost' or '127.0.0.1'.
The solution here is:
In server
host = '192.168.1.12' #Ip address in LAN network
In client
host = '27.32.123.32' # external IP Address
Hope it works for you
                host='' is better in the server, i.e. listen at 0.0.0.0. That way it supports multuhoming, and survives reconfiguration.
– user207421
                Jul 27, 2020 at 1:04
                Yup. If you using the domain then your solution is better. But I think in this case we should be using the static IP address
– Sang9xpro
                Jul 28, 2020 at 4:21
I had errors 10060 and 10061. The reason was in my antivirus(Eset Nod 32). Try to turn off the Firewall of your antivirus as I did or just delete it for a time to test the program. If everything started to work properly, add that program to the exclusion or switch to another antivirus.
Also, try to change the 'host' variable to an empty string:
host = ''
And add socket.AF_INET, socket.SOCK_STREAM to the 's' variable:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
I was doing this tutorial and they said that windows users will have a problem. They said that you can check the Windows Firewall to fix the problem. Let me show you a quick Google Search on how to change the windows firewall:
Go to Start and open Control Panel. Select System and Security > Windows Defender Firewall. Choose Turn Windows Firewall on or off. Select Turn on Windows Firewall for domain, private, and public network settings.
After that, your app should work. Also, in your client(not server side) the port should be 0.0.0.0 and in the server side, it should be 127.0.0.1.
If the client and server are running on the same machine (as in running 2 programs), it's OK to config both IP address as locahost. However, if you are to run them on different machines (including VMs), you need to
Make sure they are on the same subnet (usually by pinging each other)
The Server needs to config the host IP as its IP address (like 192.168.xxx.xxx instead of localhost or 127.0.0.1). You may find the IP address by running ipconfig on Windows or ip a on Unix-like server
This change worked for me with my Client on Windows and Server on Ubuntu VM.
Some of the other solutions will work if you want to run server.py and client.py on the same machine. I wanted to try and run it on two different machines (windows and raspberry pi), but on the same network.
For me, it was a matter of choosing the correct IP address. If my windows machine is the server, I used the IPV4 address of the windows machine. This can be found by running ipconfig in the command prompt and selecting the 192.168.X.X number. The raspberry client side bounded to the same address. If the raspberry pi is the server, then I would bind to the inet address. You can find this by running ifconfig in the terminal (again the 192.168.X.X).
Note though, the IP addresses are temporary. I believe if you want a more permanent set-up, the server IP address needs to be bound to the router's IP address, then port-forward to the server. That way, the client wouldn't even have to be on the same network.
                Given that OP is running in two machines, and this is a localhost solution, it's unlikely to work?
– roelofs
                Nov 22, 2017 at 2:32
				metabase / python api - ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it
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