Hello,
I am stuck in my attempts to use a TLS connection for communication between my
whitebox switch and controller. I have no problems establishing a connection
over plain TCP.
[OpenFlow switch]
EdgeCore 4600-54T
OS: PICA8 OS 3.4.81
Open vSwitch 2.0.90
OpenSSL 1.0.1c 10 May 2012 (Library: OpenSSL 1.0.1g 7 Apr 2014)
[Controller]
OS: CentOS 7
Python version 2.7.10
Ryu version 3.29
OpenSSL 1.0.1g 7 Apr 2014
I followed these instructions:
https://ryu.readthedocs.org/en/latest/tls.html
After I complete the last step to start ryu, I get the following error:
loading app ryu.controller.ofp_handler
instantiating app ryu.controller.ofp_handler of OFPHandler
BRICK ofp_event
CONSUMES EventOFPSwitchFeatures
CONSUMES EventOFPEchoRequest
CONSUMES EventOFPPortDescStatsReply
CONSUMES EventOFPErrorMsg
CONSUMES EventOFPHello
hub: uncaught exception: Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/ryu/lib/hub.py", line 52, in _launch
func(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/ryu/lib/hub.py", line 112, in
wrap_and_handle
handle(ssl.wrap_socket(sock, **ssl_args), addr)
File "/usr/lib/python2.7/site-packages/eventlet/green/ssl.py", line 345, in
wrap_socket
return GreenSSLSocket(sock, *a, **kw)
File "/usr/lib/python2.7/site-packages/eventlet/green/ssl.py", line 67, in
__init__
ca_certs, do_handshake_on_connect and six.PY2, *args, **kw)
File "/usr/lib64/python2.7/ssl.py", line 588, in __init__
self.do_handshake()
File "/usr/lib/python2.7/site-packages/eventlet/green/ssl.py", line 243, in
do_handshake
super(GreenSSLSocket, self).do_handshake)
File "/usr/lib/python2.7/site-packages/eventlet/green/ssl.py", line 112, in
_call_trampolining
return func(*a, **kw)
File "/usr/lib64/python2.7/ssl.py", line 810, in do_handshake
self._sslobj.do_handshake()
SSLError: [SSL: NO_CERTIFICATE_RETURNED] no certificate returned (_ssl.c:765)
I have attached a screenshot of a wireshark capture that shows the attempted
handshake.
If anybody has seen this error before or could point me in the right direction,
I'd greatly appreciate it.
Thanks
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