Connection being reset by client

So I am trying to have my computer to communicate with a device and I am getting an error of the Ethernet connection reset. The output from the server side looks like this

Calling accept on socket Accepted connection socket csock:10 Received Ethernet connection from ip: 186.142.1.23 Warning - the connection socket was reset by the client Error -Ethernet connection reset

The warning line was repeated 11 times. The client output does not output anything. Here is my client code. Sorry I will not be able to provide the server code.

import os
import socket

s=socket.socket()
hostname= "186.142.1.23"
port = 49153
s.connect((hostname,port))
s.close()

The code seems to be too simple for something to go wrong. So I am not sure if it is some syntax error or something else. The server might be using PyQt4, if that matters at all. Thank you for your help.