重复的 SSLEOFError 处理答案

【问题标题】：Reoccuring SSLEOFError handling重复的 SSLEOFError 处理
【发布时间】：2016-04-08 16:51:01
【问题描述】：

我有一个使用 web.py 的 python 服务器，它与经常遇到 SSLEOFError 的 Apple Push Notification Servers 通信。我试图处理这个错误，但我似乎无法在 ssl 模块或 pyopenssl 或 _ssl 中找到它。在处理此错误或可能防止它的任何帮助将不胜感激。这是堆栈跟踪：

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/web/application.py", line 239, in process
    return self.handle()
  File "/usr/lib/python2.7/dist-packages/web/application.py", line 230, in handle
    return self._delegate(fn, self.fvars, args)
  File "/usr/lib/python2.7/dist-packages/web/application.py", line 420, in _delegate
    return handle_class(cls)
  File "/usr/lib/python2.7/dist-packages/web/application.py", line 396, in handle_class
return tocall(*args)
  File "/home/ubuntu/mdm-server/server/API/api.py", line 189, in GET
    COMMAND_QUEUE.get_queue(sql)
  File "/home/ubuntu/mdm-server/server/queue.py", line 165, in get_queue
    self.send_apns(row['udid'], sql)
  File "/home/ubuntu/mdm-server/server/queue.py", line 219, in send_apns
    except ssl.SSLEOFError:
AttributeError: 'module' object has no attribute 'SSLEOFError'

编辑：这是没有错误处理的堆栈跟踪。我现在意识到我可能应该只处理超类 ssl.SSLERROR 而不是 ssl.SSLEOFERROR 并且我将尝试这样做，但是任何关于为什么会发生这种情况的见解将不胜感激。

Unexpected error: <class 'ssl.SSLError'>
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/web/application.py", line 239, in process
    return self.handle()
  File "/usr/lib/python2.7/dist-packages/web/application.py", line 230, in handle
    return self._delegate(fn, self.fvars, args)
  File "/usr/lib/python2.7/dist-packages/web/application.py", line 420, in _delegate
    return handle_class(cls)
  File "/usr/lib/python2.7/dist-packages/web/application.py", line 396, in handle_class
    return tocall(*args)
  File "/home/ubuntu/mdm-server/server/API/api.py", line 189, in GET
    COMMAND_QUEUE.get_queue(sql)
  File "/home/ubuntu/mdm-server/server/queue.py", line 165, in get_queue
    self.send_apns(row['udid'], sql)
  File "/home/ubuntu/mdm-server/server/queue.py", line 216, in send_apns
    wrapper.notify()
  File "/usr/local/lib/python2.7/dist-packages/APNSWrapper-0.6.1-py2.7.egg/APNSWrapper/notifications.py", line 194, in notify
    apnsConnection.connect(apnsHost, self.apnsPort)
  File "/usr/local/lib/python2.7/dist-packages/APNSWrapper-0.6.1-py2.7.egg/APNSWrapper/connection.py", line 215, in connect
    self.context().connect(host, port)
  File "/usr/local/lib/python2.7/dist-packages/APNSWrapper-0.6.1-py2.7.egg/APNSWrapper/connection.py", line 161, in connect
    self.connectionContext.connect((host, port))
  File "/usr/lib/python2.7/ssl.py", line 433, in connect
    self._real_connect(addr, False)
  File "/usr/lib/python2.7/ssl.py", line 423, in _real_connect
    self.do_handshake()
  File "/usr/lib/python2.7/ssl.py", line 405, in do_handshake
    self._sslobj.do_handshake()
SSLError: [Errno 8] _ssl.c:510: EOF occurred in violation of protocol

Edit2：ssl.SSLError 处理错误。

Edit3：我确实必须编辑 APNSWrapper 才能使用 TLSv1，详见此 GitHub 存储库的服务器设置部分。 Example iOS MDM Server

【问题讨论】：

标签： python ssl error-handling apple-push-notifications web.py

【解决方案1】：

好的，想通了。当 APNs 服务器无法与预期的电话通信时，APNSWrapper 会引发此错误。（即电话已关闭或没有接收信号。）如果其他人遇到此问题，捕获 ssl.SSLError 的 try/except 块将处理此异常。如果是这种情况，最好暂缓再次调用 APNs。

【讨论】：