I am trying to create a simple web server with python using the following code.
However, When I run this code, I face this error:
ConnectionRefusedError: [WinError 10061] No connection could be made
because the target machine actively refused it
It worths mentioning that I have already tried some solutions suggesting manipulation of proxy settings in internet options. I have run the code both in the unticked and the confirmed situation of the proxy server and yet cannot resolve the issue.
Could you please guide me through this ?
import sys
import socketserver
import socket
hostname = socket.gethostname()
print("This is the host name: " + hostname)
port_number = 60000
soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
soc.connect((hostname,port_number))
Standard EXAMPLE of socket connection
SERVER & CLIENT
run this in your IDLE
import time
import socket
import threading
HOST = 'localhost' # Standard loopback interface address (localhost)
PORT = 60000 # Port to listen on (non-privileged ports are > 1023)
def server(HOST,PORT):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((HOST, PORT))
s.listen(1)
while True:
conn, addr = s.accept()
data = conn.recv(1024)
if data:
print(data)
data = None
time.sleep(1)
print('Listening...')
def client(HOST,PORT,message):
print("This is the server's hostname: " + HOST)
soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
soc.connect((HOST,PORT))
soc.send(message)
soc.close()
th=threading.Thread(target = server,args = (HOST,PORT))
th.daemon = True
th.start()
After running this, in your IDLE execute this command and see response
>>> client(HOST,PORT,'Hello server, client sending greetings')
This is the server's hostname: localhost
Hello server, client sending greetings
>>>
If you try to do server with port 60000 but send message on different port, you will receive the same error as in your OP. That shows, that on that port is no server listening to connections
Related
I'm trying to get two computers (my PC and my laptop) to communicate over the Local Network using the Socket module in python.
This is the Server side code running on my PC (connected via LAN):
import socket
HOST = '192.168.1.3' #local PC IP
print(HOST)
PORT = 8080 # Port to listen on (non-privileged ports are > 1023)
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.bind((HOST, PORT))
s.listen()
conn, addr = s.accept()
with conn:
print('Connected by', addr)
while True:
data = conn.recv(1024)
print(data)
if not data:
break
conn.sendall(data)
And this is the Client side code, running on my Laptop (connected over WiFi):
import socket
TCP_IP = '192.168.1.3'
TCP_PORT = 8080
BUFFER_SIZE = 1024
MESSAGE = b"Hello, World!"
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((TCP_IP, TCP_PORT))
s.send(MESSAGE)
data = s.recv(BUFFER_SIZE)
s.close()
print("received data:", data)
The thing is: when I execute both codes, the Server side stays idle waiting for a connection and the Client side, after a while stops and returns the following timeout error:
Traceback (most recent call last):
File "C:\Users\...\client.py", line 13, in <module>
s.connect((TCP_IP, TCP_PORT))
TimeoutError: [WinError 10060] 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
I can't understand why it won't connect from another device in the same network while it works perfectly if I execute the Client code on the same machine as the Server, even if when I run netstat -an in the CMD I can see the computer listening on that port:
TCP 192.168.1.3:8080 0.0.0.0:0 LISTENING
I tough it had something to do with the port forwarding so I tried playing around with it but I'm having troubles with that too (the ports seem to remain closed).
I really don't know what to do next, if you have some advice or know something else I could try please reply.
It actually was a firewall problem, I just needed to disable the windows defender firewall for the local network and now everything is working fine
In Windows 10, I had to open the port I was using for the socket, and it worked for me.
Here is a link to the instructions.
You're listening and connecting to the same IP - you need to listen to the client's IP(or just any IP with the correct port number) on the server and connect to the server's IP on the client.
For example, if the client's IP is 1.2.3.4 and the server's is 1.2.3.5, then
# server side
s.bind(('1.2.3.4', 8080)) # CLIENT_IP = '1.2.3.4'; PORT = 8080
# can also be s.bind(('0.0.0.0', 8080)) if you want multiple clients to connect.
# client side
s.connect(('1.2.3.5', 8080)) # SERVER_IP = '1.2.3.5'; PORT = 8080
I'm having problems with a simple socket connection to an Heroku app.
This is my server:
import socket
import os
import time
import sys
server = socket.socket()
port = int(os.environ.get("PORT", 12344))
host = "0.0.0.0"
server.bind((host, port))
print(f"###### SERVER RUNNING ON PORT {port} ({host}) ######")
server.listen()
while True:
s, addr = server.accept()
print("Recived request from:", addr)
print(addr, " sent: ", repr(s.recv(1024)))
print("Answering to:", addr)
s.send("Hello, world! (from server)".encode())
print("Answered to:", addr)
s.close()
It builds and run perfectly on Heroku(it receives also socket connection, not from me...by at this time, I don't care much about it)
This is my client:
import socket
import sys
HOST = 'app_name.herokuapp.com/' # The server's hostname or IP address
PORT = int(sys.argv[1]) # The port used by the server
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
print("connecting to " + HOST +":"+str(PORT))
s.connect((HOST, PORT))
print(s)
s.sendall("HI!!!".encode())
data = s.recv(1024)
print('Received', repr(data))
Running the client, after a while it returns:
File "./client.py", line 14, in <module>
s.connect((HOST, PORT))
TimeoutError: [Errno 110] Connection timed out
I don't know how to connect to it...am I missing something?
The problem is linked to the fact that Heroku app allow only http(s) connections. I honesty didn't found any Heroku docs that conferm it but the Daniel Chin' answer to this question make sense to me.
However, move the server.py to AWS worked for me (EC2 with t2.micro is free for the first year!!)
I'm trying to make a basic python networking program. All I'm trying to do is send strings of text back and forth between the server and the client. I'm trying to host the server on my Raspberry Pi, and connect with a client on Windows 10. The program works great locally on my computer, but when I try to connect to my server, it gives me ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it. My server code is as follows:
import socket # Import socket module
import netifaces as ni
s = socket.socket() # Create a socket object
host = socket.gethostname() # Get local machine name
port = 12345 # Reserve a port for your service.
s.bind((host, port))
#host_ip = ni.ifaddresses('wlan0')[ni.AF_INET][0]['addr']
host_ip = "bruh?"
print("Server started! \nHostname: " + host + " \nIP: " + host_ip + " \nPort: " + str(port))
s.listen() # Now wait for client connection.
while True:
c, addr = s.accept() # Establish connection with client.
print('Got connection from', addr)
output = "Welcome to the server!".encode()
c.send(output)
c.close()
Client code:
import socket
s = socket.socket()
host = 192.168.1.21
port = 12345
s.connect((host, int(port)))
noResponse = False
serverResponse = s.recv(1024).decode()
print(serverResponse)
s.close()
Does anyone know what my problem is? Thanks.
There may be a few reasons you are getting a ConnectionRefusedError, please try the following:
Check that no firewall is blocking your connection.
Double-check the server IP, if it is wrong you may get this error.
Try to use Hercules to check the connection.
Also, I would change the code as follow:
Server:
import socket
HOST = '' # localhost
PORT = # IMPORTANT !! Do not use reserved ports
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
sock.bind((HOST, PORT))
sock.listen()
conn, addr = sock.accept()
with conn:
print('Connected by', addr)
while True:
data = conn.recv(1024)
if not data:
break
print('Data: ',data)
conn.sendall('RT')
Client:
import socket
HOST = '' # server IP address
PORT = # server port
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as sock:
sock.connect((HOST, PORT))
sock.sendall('Hello, I am the Client')
data = sock.recv(1024)
print('Received', data)
By doing this you are using a TCP connection and you can test your code with different TCP server and client emulators.
I'm trying to make a chat app in Python and I'm having some trouble.
I made a server on which I can connect successfully by using the local IP address. However, when I try to connect to it on an another device with my public IP address, there seems to be a timeout, no errors occur and it's continuously trying to connect.
Edit: I've already set up port-forwarding for my IPv4 address. And the client is using the public IP.
server.py:
import socket
s = socket.socket()
host = socket.gethostbyname(socket.gethostname())
port = 2000
s.bind((host, port))
print("Server started, waiting for incoming connections")
s.listen(5)
connection, address = s.accept()
print("New connection from", address)
while True:
data = connection.recv(1024).decode()
print("received:", data)
ret = data + "+++++++"
connection.send(ret.encode())
client.py
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = #my public ip address from whatsmyip.com
port = 2000
s.connect((host, port))
print("Connected.")
while True:
message = input("msg: ")
s.send(message.encode())
data = s.recv(1024).decode()
print(data)
Well, first of all, is your server in a network with other devices? If you have a router there, the IP you see in whatsmyip.com is the router's, not your computer's, IP. So you'd be trying to connect to it.
You can check that with the command netstat.
I was building a simple client/server code and i keep getting this error. I dont understand why (I am trying to get used to python). here is my code:
Server Code:
import socket
from socket import*
from time import ctime
HOST = ''
PORT = 21567
BUFSIZ = 1024
ADDR =(HOST, PORT)
tcpsersock = socket(AF_INET, SOCK_STREAM)
tcpsersock.bind(ADDR)
tcpsersock.listen(5)
while True:
print("waiting for connection...")
tcpclisock, addr = tcpsersock.accpet()
print("...Connected from: "),addr
while True:
data = tcpclisock.recv(BUFSIZ)
if not data:
break
tcpclisock.send('[%s] %s' %(ctime(), data))
tcpclisock.close()
tcpsersock.close()
Client Code:
import socket
from socket import*
from time import ctime
HOST = 'localhost'
PORT = 21567
BUFSIZ = 1024
ADDR = (HOST, PORT)
tcpclisock = socket(AF_INET, SOCK_STREAM)
tcpclisock.connect(ADDR)
while True:
data = raw_input('> ')
if not data:
break
tcpclisock.send(data)
data = tcpclisock.recv(BUFSIZ)
if not data:
break
print data
tcpclisock.close()
I get this error:
error: [Errno 10061] No connection could be made because the target machine actively refused it
Try this:
tcpclisock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
This is almost straight from the documents page for socket which you can find here socket
Probably there is no server process running on the server side (due to accpet()?)
That suggests the remote machine has received your connection request, and send back a refusal (a RST packet). I don't think this is a case of the remote machine simply not having a process listening on that port (but i could be wrong!).
That sounds like a firewall problem. It could be a firewall on the remote machine, or a filter in the network in between, or, perhaps on your local machine - are you running any kind of security software locally?
first run the server script -- which starts listening
then open the client ..
or -- try to change the port
the error simply indicates "that no one is listening"