Question

那天我开始学习python和sockets，我制作了一个简单的客户端服务器应用程序只是为了进行一些测试，它在Python 3.6上可以正常工作，但是在最新版本中却给了我错误。

Server.py

import socket, ssl

context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
context.verify_mode = ssl.CERT_REQUIRED
context.load_cert_chain(certfile="SSL/server.crt", keyfile="SSL/server.key")
context.load_verify_locations("SSL/client.crt")

bindsocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
bindsocket.bind(("127.0.0.1", 65405))
bindsocket.listen(10)

while True:
    newsocket, fromaddr = bindsocket.accept()
    print(newsocket)
    connstream = context.wrap_socket(newsocket, server_side=True)
    try:
        print(connstream.getpeercert())
    finally:
        connstream.shutdown(socket.SHUT_RDWR)
        connstream.close()

Client.py

import ssl, socket

context = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
context.load_cert_chain(certfile="SSL/client.crt", keyfile="SSL/client.key")
context.verify_mode = ssl.CERT_REQUIRED
context.check_hostname = True
context.load_verify_locations("SSL/server.crt")

conn = context.wrap_socket(socket.socket(socket.AF_INET, socket.SOCK_STREAM), server_hostname="127.0.0.1")

try:
    conn.connect(("127.0.0.1", 65405))
    conn.sendall(b"aff")
    print(conn.getpeercert())
except:
    print("não")
finally:
    conn.shutdown(socket.SHUT_RDWR)
    conn.close()

错误

Traceback (most recent call last):
    File "C:/Users/nicol/Desktop/Kyuu/Bot/Kaori/Python/server.py", line 15, in <module>
    connstream = context.wrap_socket(newsocket, server_side=True)
    File "C:\Users\nicol\AppData\Local\Programs\Python\Python37\lib\ssl.py", line 412, in wrap_socket
    session=session
    File "C:\Users\nicol\AppData\Local\Programs\Python\Python37\lib\ssl.py", line 853, in _create
    self.do_handshake()
    File "C:\Users\nicol\AppData\Local\Programs\Python\Python37\lib\ssl.py", line 1117, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLError: [SSL: SSLV3_ALERT_BAD_CERTIFICATE] sslv3 alert bad certificate (_ssl.c:1056)

编辑1

我尝试使用ssl.SSLContext（ssl.PROTOCOL_TLS_SERVER）和ssl.SSLContext（ssl.PROTOCOL_TLS_CLIENT），但出现相同的错误。

编辑2

当我在OpenSSL中使用命令“ s_client -connect 127.0.0.1:65405 -cert client.pem -key client.pem -CAfile server.crt”时，效果很好

Answer 1

自Python v3.6 namely

起，许多旧协议均被禁用

由于服务器和客户端运行在不同的python版本（3.6与3.7）上，因此可能会发生这种情况。

代码适用于Python 3.6，但不适用于3.7

1 个答案: