Python http requests.exceptions.ConnectionError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

Question

我正在编写一个聊天程序。我的每个客户在一个单独的线程（以及另一个用于发布他们自己的消息的线程）中都有一个对服务器的开放获取请求。我不想有很多开销。也就是说，客户端不会经常发送 get 请求来查看是否有任何未见过的消息。相反，它们总是有一个打开的获取请求来获取新消息，并且一旦服务器用新的看不见的消息响应它们，它们就会立即向服务器发送另一个获取请求以保持更新等等。 所以在客户端，我有这样的东西：

def coms():
   headers = {'data': myAut.strip()}
   resp = requests.get("http://localhost:8081/receive", headers=headers,timeout=1000000)
   print(resp.text)
   t = threading.Thread(target=coms, args=())
   t.start()

在服务器端，我有这样的事情：

def do_GET(self):

    if self.path == '/receive':
        auth=self.headers['data']
    
    #Using auth, find who has sent this message
        u=None
        for i in range(len(users)):
            print(users[i].aut,auth)
            if users[i].aut==auth:
                u=users[i]
                break


        t=threading.Thread(target=long_Poll,args=(u,self))
        t.start()

和

def long_Poll(client,con):

   while True:

       if len(client.unreadMessages) != 0:
           print("IM GONNA RESPOND")
           con.end_headers()
           con.wfile.write(bytes(client.unreadMessages, "utf8"))
           client.unreadMessages=[]
           break
   con.send_response(200)
   con.end_headers()

这背后的逻辑是服务器想要进行长轮询，也就是说，它将GET/receive 请求保持在另一个忙等待线程中打开。当任何客户端通过POST/message 向服务器发送消息时，它只会将此新消息添加到其他客户端unseenMessages，因此一旦它们的线程运行，它们就会退出while True: 循环，服务器会为它们提供新的消息。换句话说，我想保持客户的GET/receive 处于打开状态，并且只要我愿意就不会回复它。 这个过程可能需要很长时间。可能聊天室闲置，很长时间没有消息。 现在我遇到的问题是，一旦我的客户发送了它的第一条GET/receive 消息，它就会收到这个错误，即使我在GET/receive 请求中设置了这么多的超时值。

C:\Users\erfan\Desktop\web\client\venv\Scripts\python.exe C:\Users\erfan\Desktop\web\client\Client.py
Hossein
Welcome to chatroom Hossein ! Have a nice time !
Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\connectionpool.py", line 677, in urlopen
    chunked=chunked,
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\connectionpool.py", line 426, in _make_request
    six.raise_from(e, None)
  File "<string>", line 3, in raise_from
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\connectionpool.py", line 421, in _make_request
    httplib_response = conn.getresponse()
  File "C:\Users\erfan\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 1321, in getresponse
    response.begin()
  File "C:\Users\erfan\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 296, in begin
    version, status, reason = self._read_status()
  File "C:\Users\erfan\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 265, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
http.client.RemoteDisconnected: Remote end closed connection without response

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\requests\adapters.py", line 449, in send
    timeout=timeout
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\connectionpool.py", line 727, in urlopen
    method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\util\retry.py", line 410, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\packages\six.py", line 734, in reraise
    raise value.with_traceback(tb)
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\connectionpool.py", line 677, in urlopen
    chunked=chunked,
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\connectionpool.py", line 426, in _make_request
    six.raise_from(e, None)
  File "<string>", line 3, in raise_from
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\urllib3\connectionpool.py", line 421, in _make_request
    httplib_response = conn.getresponse()
  File "C:\Users\erfan\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 1321, in getresponse
    response.begin()
  File "C:\Users\erfan\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 296, in begin
    version, status, reason = self._read_status()
  File "C:\Users\erfan\AppData\Local\Programs\Python\Python37\lib\http\client.py", line 265, in _read_status
    raise RemoteDisconnected("Remote end closed connection without"
urllib3.exceptions.ProtocolError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\erfan\AppData\Local\Programs\Python\Python37\lib\threading.py", line 917, in _bootstrap_inner
    self.run()
  File "C:\Users\erfan\AppData\Local\Programs\Python\Python37\lib\threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\erfan\Desktop\web\client\Client.py", line 13, in coms
    resp = requests.get("http://localhost:8081/receive", headers=headers,timeout=1000000)
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\requests\api.py", line 76, in get
    return request('get', url, params=params, **kwargs)
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\requests\api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\requests\sessions.py", line 530, in request
    resp = self.send(prep, **send_kwargs)
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\requests\sessions.py", line 643, in send
    r = adapter.send(request, **kwargs)
  File "C:\Users\erfan\Desktop\web\client\venv\lib\site-packages\requests\adapters.py", line 498, in send
    raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

================================================ ============================== 更新：

奇怪的部分是每当我将GET/receive 模块编辑成这个时：

 def do_GET(self):
      while True:
         pass

一切正常。 但是当我这样做时：

def do_GET(self):
   t=threading.Thread(target=long_Poll,args=(self))
   t.start()

def long_Poll(con):

  client =None
  while True:
    pass

它给客户端同样的错误！

我的意思是问题是因为我将 self 对象传递给另一个函数来响应？也许它会中断连接？我记得在 Java 套接字编程中遇到过同样的问题，当我想使用套接字在两个函数中进行通信时，有时会遇到一些错误？但是，这里我只想在长轮询函数中进行通信，而不是在其他任何地方。

========================================

更新： 我还将我的服务器和客户端代码放在这里。为简洁起见，我在此处发布 paste.ubuntu 链接。

客户：

https://paste.ubuntu.com/p/qJmRjYy4Y9/

服务器：

https://paste.ubuntu.com/p/rVyHPs4Rjz/

客户第一次键入时，输入他的姓名，然后开始发送GET/receive 请求。然后，客户可以通过发送POST/message 请求将他的消息发送给其他人。每当用户向服务器发送消息时，服务器都会（通过他的身份验证）找到他并更新所有其他客户端 unseenMessages 以便每当他们的长轮询线程继续时，他们都会收到新消息并且他们的客户端也会发送立即发送另一条GET/receive 消息。

Answer 1

我找到了答案。我试图拥有一个使用单线程语法的多线程服务器！ 我遵循这个线程来拥有一个多线程 HTTP 服务器 Multithreaded web server in python