Good day everyone! I'm still doing research on this so please pardon if I make any mistake. I'm currently working on a small project that need socket connection between 2 device, problem is, when ever I used the client and the server on the same device, it worked out okay. But when I moved the client into a different device, then started the process again(same LAN connection), it just gave me the time out error [WinError 10060]. Here is my code:
Server side:
HOST = '10.0.0.32'
PORT = 44132
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind((HOST, PORT))
server.listen()
client, address = server.accept()
Client side:
HOST = '10.0.0.32'
PORT = 44132
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect((HOST, PORT))
I have tried disabling the Firewall and restart computer, changing port or trying to check in cmd if server is really Listening or not, is there anything that I'm missing here? Thank you.
The full error report is: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
edit:
Here is also my port listening on 44132 using netstat:
Proto Local Address Foreign Address State
TCP 0.0.0.0:44132 0.0.0.0:* LISTENING
edit2: Another update on my end, I've tried turning off the firewall on target machine and ping it, the ping now went through successfully but the client and server still refused to reconnect and continue on timing out. Could it be that there is another firewall between my 2 devices and are implemented by the router to prevent the connection taking place?
Probably you are using the wrong ip address, my advice is to use the command arp -a to check if the server's ip is correct (if you have access to the router you could check there otherwise).
Moreover, be aware when you use socket.gethostbyname(socket.gethostname()), take a look here Python socket.gethostname
I have been experimenting with the socket library for python. I made a simple program for the server and client where the client can message the server.
Here is my code for the server:
import socket
print("Host")
socket_main = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket_main.bind(('127.0.0.1', 9999))
socket_main.listen(1)
conn, addr = socket_main.accept()
while True:
data = conn.recv(1204).decode()
print(data)
conn.close()
Here is my code for the client
import socket
print("Client")
socket_main = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
socket_main.connect(('127.0.0.1', 9999))
while True:
message = input(": ")
socket_main.send(message.encode())
socket_main.close()
When I run these programs in two different terminals on one computer it works just fine, but when I try to run the server and client on different computers I get an error on the clients end saying, "No connection could be made because the target machine actively refused it".
I have tried changing the port multiple times but it didn't help. I have looked through a lot of other forums and I haven't been able to fix this problem for a while now so I decided to ask here.
when I try to run the server and client on different computers I get an error on the clients end
That is because you are using127.0.0.1 on both sides. That is the localhost loopback IP address. It works when the client and server are on the same machine, but it is not routable on the LAN network.
You need to:
change the server to listen on either 0.0.0.0 (to listen on all installed network interfaces), or its actual LAN IP address (just the network interface attached to the LAN).
change the client to connect to the server's hostname or IP address on the LAN.
I have tried changing the port multiple times but it didn't help
The problem is nit with the port, but with the IP address.
I have created a chat application using python sockets and Tkinter and it all works perfectly locally however the Client is unable to connect to the server remotely (when I enter my public IP address as the host) I have already fully port-forwarded my network and I know how to port forward very well and when I run an online Port Open scanner that checks if a port is open it states that the port is open!?
I have port-forwarded my router on a number of ports and updating the client and server accordingly however the client and telnet could still not connect.. I have also disabled all my windows firewalls and I disabled all of the routers firewalls.
Here is a very simple socket client and server model which I am trying to troubleshoot my problem using.
Server
import socket
s = socket.socket()
host='0.0.0.0'
port = 2000
s.bind((host,port))
s.listen(5)
while True:
c, addr = s.accept()
print ("Got a connection from: ", addr)
c.send(bytes("Thanks for connecting",'utf8'))
c.close()
Client
import socket
s = socket.socket()
port = 2000
s.connect(("109.156.114.183", port))
print (s.recv(1024))
s.close
Telnet
C:\Users\Maks>telnet 109.156.114.183 2000
Connecting To 109.156.114.183...Could not open connection to the host, on port 2000: Connect failed
When I try to connect to the server on 127.0.0.1 or localhost or from within my local network the client connects perfectly and telnet can connect as well. I am 200% sure I have port forwarded correctly because when I run a Port Open scan it says that the port(2000) is open.
Please help!
Thanks-
Maks
I'm at home so there's no firewalls running on my network at all.
That comment was the missing piece to solve your problem. You actually don't connect from remote as your question implies but you try to connect from inside your local network to the externally visible address of your router.
Such a setup is supported by some routers and not by others. It looks like you router does not support it. For more information on this see NAT hairpinning (or NAT loopback).
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.
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.
There is no relationship between error and firewall.
first, run server program,
then run client program in another shell of python
and it will work
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
I was facing a similar problem when I was calling REST API using python library and what I found that my server was going into sleep mode which was leading to this. As soon as I logged in to the server via Remote Desktop Connection, my API call used to work.
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 .....
The below changes fixed my problem.
I struggled with the same error for a week. I would like to share with you all that the solution is simply host = '' in the server and the client host = ip of the server.
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
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.
First you have to start your server( run server.py ) using Command prompt and after that you can easily run client.py because you need a server first which will host so that client.py could be run.
the short term solution is to use the default iis host and port normally 120.0.0.1 and 80 respectively. However am still looking for a more versatile solution.
When you run the code on windows machine, firewall prompts it to allow network access, allow the network access and it will work, if it does not prompts, go to firewall settings > allow an app through firewall and select your python.exe and allow network access.
i already have a post which is quite similiar, but i am getting more and more frustrated because it seems nothing is wrong with my network setup. Other software can be seen from the outside (netcat listen servers etc.) but not my scripts.. How can this be??
Note: It works on LAN but not over the internet.
Server:
import socket
host = ''
port = 80001
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((host,port))
s.listen(1)
print 'Listening..'
conn, addr = s.accept()
print 'is up and running.'
print addr, 'connected.'
s.close()
print 'shut down.'
Client:
import socket
host = '80.xxx.xxx.xxx'
port = 80001
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host,port))
s.close()
Somebody please help me.
Any help is greatly appreciated.
Jake
Edited again to add:
I think you may be missing some basics on socket communication. In order for sockets to work, you need to ensure that the sockets on both your client and server will meet. With your latest revision, your server is now bound to port 63001, but on the local loopback adapter: 127.0.0.1
Computers have multiple network adapters, at least 2: one is the local loopback, which allows you to make network connections to the same machine in a fast, performant manner (for testing, ipc etc), and a network adapter that lets you connect to an actual network. Many computers may have many more adapters (virtual adapters for vlans, wireless vs wired adapters etc), but they will have at least 2.
So in your server application, you need to instruct it to bind the socket to the proper network adapter.
host = ''
port = 63001
bind(host,port)
What this does in python is binds the socket to the loopback adapter (or 127.0.0.1/localhost).
In your client application you have:
host = '80.xxx.xxx.xxx'
port = 63001
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host,port))
Now what your client attempts to do is to connect to a socket to port 63001 on 80.xxx.xxx.xxx (which is your wireless internet adapter).
Since your server is listening on your loopback adapter, and your client is trying to connect on your wireless adapter, it's failing, because the two ends don't meet.
So you have two solutions here:
Change the client to connect to localhost by host = 127.0.0.1
Change the server to bind to your internet adapter by changing host = 80.xxx.xxx.xxx
Now the first solution, using localhost, will only work when your server and client are on the same machine. Localhost always points back to itself (hence loopback), no matter what machine you try. So if/when you decide to take your client/server to the internet, you will have to bind to a network adapter that is on the internet.
Edited to add:**
Okay with your latest revision it still won't work because 65535 is the largest post available.
Answer below was to the original revision of the question.
In your code posted, you're listening (bound) on port 63001, but your client application is trying to connect to port 80. Thats why your client can't talk to your server. Your client needs to connect using port 63001 not port 80.
Also, unless you're running an HTTP server (or your python server will handle HTTP requests), you really shouldn't bind to port 80.
In your client code change:
import socket
host = '80.xxx.xxx.xxx'
port = 63001
And in your Server Code:
import socket
host = ''
port = 63001
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((socket.gethostbyname(socket.gethostname()), port ))
In your server script you have port = 80, but you don't ever use it. It looks like the server is listening on 63001. And the client is connecting to 80.
If you're going to use 80, make sure you don't have an http server trying to use the port at the same time as well.