[Python] Python: [WinError 10054] An existing connection was forcibly closed by the remote host

I'm creating a client to server based chat client and every time I setup a server and a client, the server keeps listening for a connection and when the client attempts to connect this error appears [WinError 10054] An existing connection was forcibly closed by the remote host, however the server still listens for a connection. I'm using python version 3.6.1

Script

import socket
import threading

clients = []
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

mode = input("Enter 1 for server mode and enter 2 for client mode")
if mode == "1":

def get_ip():
try:
stest = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
stest.connect(('10.255.255.255', 1))
IP = stest.getsockname()[0]
except:
IP = '127.0.0.1'
finally:
stest.close()
return IP
print("IP: " + get_ip())
s.bind((get_ip(), 7999))
s.setblocking(0)

print("Waiting for connection")
while True:
try:
data, addr = s.recvfrom(1024)
if data.decode() == "Quit":
quitmsg = str(addr) + " has quit the chat."
clients.remove(addr)
for client in clients:
s.sendto(quitmsg.encode("utf-8"), client)
break
elif data:
print(data)
if addr not in clients:
clients.append(addr)
print(clients[0])
for client in clients:
print(client)
s.sendto(data, client)
except:
pass
s.close()


elif mode == "2":
while True:
try:
ip = input("Enter in an ip address")
socket.inet_aton(ip)
except socket.error:
print("Invalid IPv4 address")
continue
while True:
try:
port = int(input("Enter in port number"))
except ValueError:
print("Invalid Port Number")
continue
break
addr = (ip, port)
break
s.connect(addr)

def recvmsg():
while True:
data = s.recv(1024)
print(data)
if data:
print(data.decode())

recv = threading.Thread(name="recvmsg", target=recvmsg)
recv.daemon = True
recv.start()

while True:
string = input(">>")
s.send(string.encode("utf-8"))
if str(string) == "Quit":
break

s.close()
print("Disconnected from chat")


Server Waiting For connection even after client can't connect

Client Failed to connect

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