为什么我在python中得到“拒绝连接”？无法使用现有解决方案解决

Question

import ssl
import socket

port = 3001

while True:
    s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    ssl_socket = ssl.wrap_socket(s, cert_reqs=ssl.CERT_REQUIRED, ca_certs='scert.pem')
    ssl_socket.connect(('127.0.0.1', 3001))
    ssl_socket.write(str(input("Enter two numbers to add:")).encode())
    z = ssl_socket.recv(1024)
    print(z.decode())
    ssl_socket.close()

我得到的错误是：

Traceback (most recent call last):

ssl_socket.connect(('127.0.0.1', 3001))

self._real_connect(addr, False)

socket.connect(self, addr)
File "/usr/lib/python2.7/socket.py", line 228, in meth
return getattr(self._sock,name)(*args)
error: [Errno 111] Connection refused

我很担心该怎么做。已经在socket上的另一个线程上试过了这些方法。