[fix] #471 #463 fix old openssl(<1.0.2) requests verify error

searx/__init__.py

 (C) 2013- by Adam Tauber, <asciimoo@gmail.com>
 '''
 
+import certifi
 import logging
 from os import environ
 from os.path import realpath, dirname, join, abspath
+from ssl import OPENSSL_VERSION_INFO, OPENSSL_VERSION
 try:
     from yaml import load
 except:
 
 logger = logging.getLogger('searx')
 
+# Workaround for openssl versions <1.0.2
+# https://github.com/certifi/python-certifi/issues/26
+if OPENSSL_VERSION_INFO[0:3] < (1, 0, 2):
+    environ['REQUESTS_CA_BUNDLE'] = certifi.old_where()
+    logger.warning('You are using an old openssl version({0}), please upgrade above 1.0.2!'.format(OPENSSL_VERSION))
+
 logger.info('Initialisation done')

versions.cfg

 ndg-httpsclient = 0.4.0
 pyasn1 = 0.1.8
 pyasn1-modules = 0.0.6
-certifi = 2015.04.28
+certifi = 2015.11.20.1
 
 cffi = 1.1.2
 cryptography = 0.9.1