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Add workaround for Python3.7+ eventlet bug.

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This commit is contained in:
Brad Cowie 2020-06-11 15:01:42 +12:00
parent 906b3a3ea5
commit ddb32f678a
1 changed files with 7 additions and 0 deletions
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7
ryu/controller/controller.py
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@ -30,6 +30,7 @@ from socket import TCP_NODELAY
from socket import SHUT_WR
from socket import timeout as SocketTimeout
import ssl
import sys
from ryu import cfg
from ryu.lib import hub
@ -169,6 +170,12 @@ class OpenFlowController(object):
# anything less than python 2.7.9 supports only TLSv1
# or less, thus we choose TLSv1
ssl_args = {'ssl_version': ssl.PROTOCOL_TLSv1}
elif sys.version_info >= (3, 7,):
# On Python3.7+ we can't wrap an SSLContext due to this bug:
# https://github.com/eventlet/eventlet/issues/526
# Lets assume the system has a new enough OpenSSL that
# SSL is fully disabled.
ssl_args = {'ssl_version': ssl.PROTOCOL_TLSv1}
else:
# from 2.7.9 and versions 3.4+ ssl context creation is
# supported. Protocol_TLS from 2.7.13 and from 3.5.3