Cleanup METHOD_SSLv3

Signed-off-by: Gábor Lipták <gliptak@gmail.com>

docs/topics/settings.rst

@@ -564,7 +564,6 @@ This setting must be one of these string values:
   set this if you want the behavior of Scrapy<1.1
 - ``'TLSv1.1'``: forces TLS version 1.1
 - ``'TLSv1.2'``: forces TLS version 1.2
-- ``'SSLv3'``: forces SSL version 3 (**not recommended**)
 
 
 .. setting:: DOWNLOADER_CLIENT_TLS_VERBOSE_LOGGING

scrapy/core/downloader/contextfactory.py

@@ -21,7 +21,7 @@ class ScrapyClientContextFactory(BrowserLikePolicyForHTTPS):
     which allows TLS protocol negotiation
 
     'A TLS/SSL connection established with [this method] may
-     understand the SSLv3, TLSv1, TLSv1.1 and TLSv1.2 protocols.'
+     understand the TLSv1, TLSv1.1 and TLSv1.2 protocols.'
     """
 
     def __init__(self, method=SSL.SSLv23_METHOD, tls_verbose_logging=False, tls_ciphers=None, *args, **kwargs):

scrapy/core/downloader/tls.py

@@ -11,7 +11,6 @@ from scrapy.utils.ssl import x509name_to_string, get_temp_key_info
 logger = logging.getLogger(__name__)
 
 
-METHOD_SSLv3 = 'SSLv3'
 METHOD_TLS = 'TLS'
 METHOD_TLSv10 = 'TLSv1.0'
 METHOD_TLSv11 = 'TLSv1.1'
@@ -20,7 +19,6 @@ METHOD_TLSv12 = 'TLSv1.2'
 
 openssl_methods = {
     METHOD_TLS: SSL.SSLv23_METHOD,                      # protocol negotiation (recommended)
-    METHOD_SSLv3: SSL.SSLv3_METHOD,                     # SSL 3 (NOT recommended)
     METHOD_TLSv10: SSL.TLSv1_METHOD,                    # TLS 1.0 only
     METHOD_TLSv11: getattr(SSL, 'TLSv1_1_METHOD', 5),   # TLS 1.1 only
     METHOD_TLSv12: getattr(SSL, 'TLSv1_2_METHOD', 6),   # TLS 1.2 only