AttributeError: 'module' object has no attribute 'PROTOCOL_TLSv1_2'

[zablotski]

Hello. I have problem with readme example.
OS: Mint 17.1
Python: 2.7

Traceback (most recent call last):
  File "hyper_test.py", line 4, in <module>
    conn.request('GET', '/')
  File "/usr/local/lib/python2.7/dist-packages/hyper/http20/connection.py", line 149, in request
    self.endheaders(message_body=body, final=True, stream_id=stream_id)
  File "/usr/local/lib/python2.7/dist-packages/hyper/http20/connection.py", line 310, in endheaders
    self.connect()
  File "/usr/local/lib/python2.7/dist-packages/hyper/http20/connection.py", line 204, in connect
    sock = wrap_socket(sock, self.host)
  File "/usr/local/lib/python2.7/dist-packages/hyper/http20/tls.py", line 33, in wrap_socket
    _context = _init_context()
  File "/usr/local/lib/python2.7/dist-packages/hyper/http20/tls.py", line 53, in _init_context
    context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
AttributeError: 'module' object has no attribute 'PROTOCOL_TLSv1_2'

I have no experience with python, maybe I'm doing something wrong.
Regards,
Yevgeny

[Lukasa]

Thanks for opening this issue Yevgeny, and thanks for trying out hyper!

HTTP/2 sets some very strict standards for the security of the connection, and one of them is that it requires TLSv1.2 for all connections. The Python 2.7 standard library does not provide access to this TLS level in any version earlier than 2.7.9, which means that hyper only supports Python 2.7.9 or Python 3.4+.

I recommend, if possible, either updating your Python 2.7 version or installing Python 3.4. It seems that on Linux Mint you can get Python 3.4 by installing the python3 package. You can therefore get everything installed by running:

$ apt-get install python3 python3-pip
$ pip-3.4 install hyper

(Not sure if pip will actually get installed as pip-3.4, but it will get a name that is something like that.)

Then, use your new python3 executable to try again.

[zablotski]

Thanks, it works fine for me.
P.S. In my environment alias for pip-3.4 is pip3 😉

[Lukasa]

Excellent, I'm glad I'm able to help!

Hopefully the next release of Linux Mint will upgrade to Python 2.7.9, which will be a substantial improvement. =)

[skaushikpowershell]

Same issue in centos. Can someone please help