unable to connect client to the server programing in different computers - python

I am learning socket programing using Python with simple example. But in local PC client able to connect with server. When I want to test same code in two different computers below is the error.
File "C:\Python27\lib\socket.py", line 228, in meth
return getattr(self._sock,name)(*args)
socket.error: [Errno 10060] A connection attempt failed because the connected pa
rty did not properly respond after a period of time, or established connection f
ailed because connected host has failed to respond
Server
import socket
s = socket.socket()
print("after socket creation")
s.bind(("",9999))
hostname = socket.gethostname()
IPAddr = socket.gethostbyname(hostname)
print("IPAddr: "+IPAddr);
print("listening")
s.listen(5)
while True:
clt,adr = s.accept()
print(f"connection to {adr} established")
clt.send(bytes("info from server", "utf-8"))
client
import socket
# host name is output of IPAddr = socket.gethostbyname(hostname) another PC
s = socket.socket()
s.connect((host,9999))
msg = s.recv(100)
print(msg.decode("utf-8"))
Please help me to resolve the issue,Thanks in advance

Related

ConnectionRefusedError: [Errno 111] Connection refused between laptop and raspberry pi using python

I am a beginner in socket communication and I wanted to test this code.
I wrote the same code but changed the host in the server to s.gethostname() when both the client and server were on my laptop and worked normally.
server: Laptop
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = ''
port = 62402
s.bind((host,port))
s.listen(5)
while True:
clientsocket, address = s.accept()
print(f"connection from {address} has been established!")
clientsocket.send(bytes("Welcome to the server!","utf-8"))
client: raspberry pi
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = socket.gethostname()
port = 62402
s.connect((host,port))
msg = s.recv(1024)
print(msg.decode('utf-8')
Error
Traceback(most recent call last):
File "/home/pi/Desktop/testting/client.py", line 6, in <module>
s.connect((host,port))
ConnectionRefusedError: [Error 111] Connection refused
Connection refused tells me that [the target] is not accepting the connection.
I don’t think ´socket.gethostname()´ can possibly return the laptop’s hostname in its current form.
´print()´ what it returns - I’d bet it’s the local machine’s hostname (the one creating the connection).
Once you know where you’re connecting to, Things that could go wrong:
Is your target listening for a connection on port 62402?
Will its firewall allow such traffic in?

Not able to connect my local system client socket to cloud based socket server

Below is my server.py file which runs on cloud based ubuntu system.
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = socket.gethostbyname(socket.gethostname())
port = 5555
s.bind((host, port))
s.listen(1)
print("Server started host={} port={}".format(host, port))
while True:
print('>>>>>>>>>> inside the while')
c, addr = s.accept()
print("Got connection from", addr)
c.send(bytes("Thank you", "utf-8"))
Now the below is my local system client.py file :
import socket
s = socket.socket()
s.connect(('my_cloud_server_ip/ssh',5555))
s.recv(1024)
Error which I am getting this:
Traceback (most recent call last):
File "", line 1, in
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
So is there anything wrong with the code or something else?
Thanks in advance.
Try binding to all networks by setting host='0.0.0.0'.
In general I suggest you follow this tutorial Socket Programming in Python (Guide) to use with for starting connections and such.

Socket server in python refuses to connect

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

how to clear 10013 error message and access port number 80

from socket import *
import socket
serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = "127.0.0.1"
port = 8000
serversocket.bind((host, 80))
serversocket.listen(5)
while True:
print "Server is ready to listen!"
c, addr = serversocket.accept()
y = c.recv(1024)
print y
serversocket.close()
File "C:\Python27\lib\socket.py", line 228, in meth
return getattr(self._sock,name)(*args) socket.error: [Errno 10013] An attempt was made to access a socket in a way forbidden by its
access permissions
I tried shutting down the windows defender, running cmd as admin, blocking firewall. It works completely fine with other port numbers.

Errno 10061 in python, I don't know what do to

I learned sockets in python. When I tried to programming sockets script in one computer, it worked, but when I tried to programming sockets script with two different computers and open socket with connection, it didn't work.
One computer(the server):
import socket
s = socket.socket()
host = socket.gethostname()
port = 1234
s.bind((host, port))
s.listen(5)
while True:
c, addr = s.accept()
print 'Got connection from', addr
c.send('Thank you for connecting')
c.close()
Second computer(the client):
import socket
s = socket.socket()
host = raw_input("The ip you want to connect to: ")
port = 1234
s.connect((host, port))
print s.recv(1024)
Error:
socket.error: [Errno 10061]
What is the problem in the scripts? Why it doesn't work?
Errno 10061:
It means the server you are trying to connect to is not waiting for one.
Make sure you have the port number open.
Try killing all python processes and start server again.
Update
Instead of
host = socket.gethostname()
use
host = ""

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