fix connection to openfire server using TLS. Fixes #5530

src/common/xmpp/tls_nb.py

@@ -351,6 +351,8 @@ class NonBlockingTLS(PlugIn):
         tcpsock = self._owner
         # See http://docs.python.org/dev/library/ssl.html
         tcpsock._sslContext = OpenSSL.SSL.Context(OpenSSL.SSL.SSLv23_METHOD)
+        tcpsock._sslContext.set_options(OpenSSL.SSL.OP_NO_SSLv2 | \
+            OpenSSL.SSL.OP_NO_TICKET)
         tcpsock.ssl_errnum = 0
         tcpsock._sslContext.set_verify(OpenSSL.SSL.VERIFY_PEER,
                 self._ssl_verify_callback)