Python Twisted:将重新连接ClientFactory与SSL write（）混合使用会频繁引发SSL错误

我正在继承

重新连接ClientFactory

并使用SSL连接。我们都在运行，但几分钟后我发现以下错误。一旦发生此错误，连接将丢失

Unhandled Error
Traceback (most recent call last):
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/python/log.py", line 103, in callWithLogger
    return callWithContext({"system": lp}, func, *args, **kw)
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/python/log.py", line 86, in callWithContext
    return context.call({ILogContext: newCtx}, func, *args, **kw)
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/python/context.py", line 118, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/python/context.py", line 81, in callWithContext
    return func(*args,**kw)
--- <exception caught here> ---
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/internet/posixbase.py", line 597, in _doReadOrWrite
    why = selectable.doRead()
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/internet/tcp.py", line 208, in doRead
    return self._dataReceived(data)
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/internet/tcp.py", line 214, in _dataReceived
    rval = self.protocol.dataReceived(data)
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/protocols/tls.py", line 430, in dataReceived
    self._flushReceiveBIO()
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/protocols/tls.py", line 400, in _flushReceiveBIO
    self._flushSendBIO()
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/twisted/protocols/tls.py", line 352, in _flushSendBIO
    bytes = self._tlsConnection.bio_read(2 ** 15)
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/OpenSSL/SSL.py", line 1384, in bio_read
    self._handle_bio_errors(self._from_ssl, result)
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/OpenSSL/SSL.py", line 1365, in _handle_bio_errors
    _raise_current_error()
  File "/usr/local/hikvision/ezops/python/lib/python2.7/site-packages/OpenSSL/_util.py", line 48, in exception_from_error_queue
    raise exception_type(errors)
OpenSSL.SSL.Error: []

类NoHagentFactory，如下所示：

reactor.connectSSL(opscenter_addr, int(opscenter_port), NoahAgentFactory(), ssl.ClientContextFactory())

import logging
import traceback

from OpenSSL import SSL
from twisted.internet import reactor,ssl
from twisted.internet import task
from twisted.internet.protocol import Protocol
from twisted.internet.protocol import ReconnectingClientFactory
import DataPackageCodecFactory as Codec
from Header import MessageHandlerMap
from Handler import HBReq, DefaultRspHandler
from Util import Connection

logger = logging.getLogger('opsagent')


class NoahAgentProtocol(Protocol):
    t = None
    def connectionMade(self):
        '''
            客户端连接成功之后会自动调用该方法
            :return:
        '''
        self.transport.setTcpKeepAlive(True) # maintain the TCP connection
        self.transport.setTcpNoDelay(True) # allow Nagle algorithm

        # 连接成功后保存连接信息
        Connection.AgentTcpConnection = self
        global t
        logger.info('is already connect to the server')
        self.recv_data_buffer = ''
        # 创建定时的心跳任务,每隔30秒执行一次
        t = task.LoopingCall(HBReq.execute, *[self])
        t.start(30)

    def dataReceived(self, data):
        logger.debug("Received Message: %s", repr(data))
        ###code handler packages##########

    def connectionLost(self, reason):
        '''
        当客户端连接断开的时候,会自动调用该方法
        :param reason:
        :return:
        '''
        try:
            t.stop()
            # 清空全局链接信息
            Connection.AgentTcpConnection = None
        except:
            logger.error(traceback.format_exc())
        logger.info('Connection is lost and Task stopped,Resaon =>%s', reason)


class NoahAgentFactory(ReconnectingClientFactory):
    def startedConnecting(self, connector):
        logger.info('Started to connect.')

    def buildProtocol(self, addr):
        logger.info('Connected.')
        logger.info('Resetting reconnection delay')
        self.resetDelay()
        return NoahAgentProtocol()

    def clientConnectionLost(self, connector, reason):
        logger.info('Lost connection.  Reason:%s', reason)
        self.resetDelay()
        self.retry(connector)
        # ReconnectingClientFactory.clientConnectionLost(self, connector, reason)

    def clientConnectionFailed(self, connector, reason):
        logger.info('Connection failed. Reason:%s', reason)
        self.resetDelay()
        self.retry(connector)

---

我认为这不是扭曲的TLS中的一个错误，我不是把消息发送到主反应器线程中，因为我们知道，扭曲是单线程模式，所以不需要考虑线程安全问题。但是我使用ReaCurr.Calin线程来处理长时间的成本业务并直接发送消息，而写（）不是线程安全的，所以调用那个错误，一旦我在发送消息时使用reactor.callFromThread，它就正常运行了

这似乎是Twisted的TLS支持中的一个bug。了解Python版本、Twisted版本、OpenSSL版本、密码学版本、pyOpenSSL版本以及此连接的另一端正在运行的内容（公共TLS服务器、您编写的另一台服务器、它使用的TLS实现等）会很好。如果有一个能再现问题的最小示例，那也会非常好。