hi.
I encountered the following errors by the newest ryu.
> Traceback (most recent call last):
> File "/usr/local/bin/ryu-manager", line 9, in <module>
> load_entry_point('ryu==3.6', 'console_scripts', 'ryu-manager')()
> File "/usr/local/lib/python2.7/dist-packages/ryu/cmd/manager.py", line 73,
> in main
> services.extend(app_mgr.instantiate_apps(**contexts))
> File "/usr/local/lib/python2.7/dist-packages/ryu/base/app_manager.py", line
> 368, in instantiate_apps
> self._instantiate(app_name, cls, *args, **kwargs)
> File "/usr/local/lib/python2.7/dist-packages/ryu/base/app_manager.py", line
> 350, in _instantiate
> ofproto_protocol.set_app_supported_versions(cls.OFP_VERSIONS)
> File
> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_protocol.py",
> line 40, in set_app_supported_versions
> _versions &= set(vers)
> UnboundLocalError: local variable '_versions' referenced before assignment
is the following patch right?
diff --git a/ryu/ofproto/ofproto_protocol.py b/ryu/ofproto/ofproto_protocol.py
index cf0495d..3298369 100644
--- a/ryu/ofproto/ofproto_protocol.py
+++ b/ryu/ofproto/ofproto_protocol.py
@@ -37,8 +37,9 @@ _supported_versions = set(_versions.keys())
def set_app_supported_versions(vers):
- _versions &= set(vers)
- assert _versions, 'No OpenFlow version is available'
+ global _supported_versions
+ _supported_versions &= set(vers)
+ assert _supported_versions, 'No OpenFlow version is available'
thanks.
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