SSL3_WRITE_PENDING error

[ilyapuchka]

After some time service using PyAPNS is run in background I start to get such error:
return self._sslobj.write(data)
SSLError: [Errno 1] _ssl.c:1217: error:1409F07F:SSL routines:SSL3_WRITE_PENDING:bad write retry

After restarting service everythong works perfect. I use send_notification method for sending messages to all registered devices in simple for cycle.

[alibitek]

This problem is still present in the current version.

StackOverflow question: https://stackoverflow.com/questions/12042932/pyapns-ssl3-write-pending-error

A stacktrace for reference:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1836, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1820, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1403, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1817, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1477, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1381, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1475, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1461, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/username/public_html/py/app/views.py", line 44, in apple_notifications
    send_apple_notification(form.token.data, form.uri.data, form.message.data)
  File "/home/username/public_html/py/app/views.py", line 15, in send_apple_notification
    apns.gateway_server.send_notification(token, payload)
  File "/usr/local/lib/python2.7/dist-packages/apns.py", line 293, in send_notification
    self.write(self._get_notification(token_hex, payload))
  File "/usr/local/lib/python2.7/dist-packages/apns.py", line 141, in write
    return self._connection().write(string)
  File "/usr/lib/python2.7/ssl.py", line 236, in write
    return self._sslobj.write(data)
SSLError: [Errno 1] _ssl.c:1311: error:1409F07F:SSL routines:SSL3_WRITE_PENDING:bad write retry

On line 15 of "/home/username/public_html/py/app/views.py" is this:

12 def send_apple_notification(token, uri, message):
14     payload = Payload(alert=message, sound="default", custom={"custom":{"uri":uri}})
15     apns.gateway_server.send_notification(token, payload)

On line 293 of "/usr/local/lib/python2.7/dist-packages/apns.py" is this:

292 def send_notification(self, token_hex, payload):
293         self.write(self._get_notification(token_hex, payload))

On line 141 of "/usr/local/lib/python2.7/dist-packages/apns.py" is this:

140         def write(self, string):
141             return self._connection().write(string)

On line 231 of "/usr/lib/python2.7/ssl.py" is this:

231         def write(self, data): 
233         """Write DATA to the underlying SSL channel.  Returns
234         number of bytes of DATA actually transmitted."""
235 
236         return self._sslobj.write(data)

[thetylerhayes]

@alexbutum pull requests #25 + #21 are an attempt to resolve this

[ghulam-muhammad-gvs]

There was one more issue I found even after merging #25 + #21:

http://stackoverflow.com/questions/23759967/pyapns-sending-push-notification-to-more-than-one-device-token-not-working

Regards,
-Ghulam Muhammad

[thetylerhayes]

Was this ever fixed in another commit?

[thetylerhayes]

Also just remembered I saw @djacobs comment on the same issue in @simonwhitaker's old repo here back in January too: #23. Looks like this wasn't ever officially merged in as a fix in that repo either.

[djacobs]

The bug & fix aren't well documented here, and the merge isn't clean. I am happy to discuss more if anyone is willing to summarize all the content in one place, but I'm generally going to be very conservative about these kinds of merges.

[thetylerhayes]

@djacobs I think the answerer in https://stackoverflow.com/questions/12042932/pyapns-ssl3-write-pending-error has a pretty good summary. Does that help?

[djacobs]

It's helpful! But for me to accept the commit (many people use this
software!) I'd like it all tied up in one place - problem statement,
solution, patch, all in one github ticket (right now it's spread out over 3
or 4). I'm trying to be ticky-tacky, just trying to keep it simple.

Thanks,
David

[thetylerhayes]

What are the other tickets? (I propose we can ignore those in other repos.) I can take a stab at organizing.

[wasauce]

I am able to reproduce this right now. What information can I provide that would help?

Below is what I am seeing in the logs. I haven't isolated a set of specific procedures to reproduce -- but a rough summary would be -- run pyapns and after a certain amount of time eventually this appears in the logs after sending hundreds to thousands of push notifications.

apns: 2014-08-05 16:16:50,659 - INFO - 505 - sending notification with id:674199962 to APNS failed: <class 'ssl.SSLError'>: [Errno 1] _ssl.c:1296: error:1409F07F:SSL routines:SSL3_WRITE_PENDING:bad write retry

[wasauce]

Is this your fork: https://github.com/dZkF9RWJT6wN8ux/PyAPNs? It looks like
it is in sync - per
https://github.com/dZkF9RWJT6wN8ux/PyAPNs/compare/djacobs:master...master

Thanks!

On Tue, Aug 5, 2014 at 10:13 AM, Alex Butum notifications@github.com
wrote:

I have merged the fixes from #21
#21 and #25
#25 a while back into my own fork
and that fixed the problem. I'll try to provide my updated fork for
reference.

—
Reply to this email directly or view it on GitHub
#13 (comment).

[thetylerhayes]

@dZkF9RWJT6wN8ux Any luck?