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no traceback if computer has no local network

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This commit is contained in:
j 2016-01-02 15:06:48 +05:30
parent 3ec134864b
commit 472d37dc01
1 changed files with 10 additions and 1 deletions
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11
oml/localnodes.py
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@ -46,6 +46,7 @@ def can_connect(data):
#logger.debug('failed to connect to local node %s', data, exc_info=1)
return False
class LocalNodesBase(Thread):
_PORT = 9851
@ -99,10 +100,12 @@ class LocalNodesBase(Thread):
self.update_node(data)
except socket.timeout:
pass
except OSError: # no local interface exists
self.wait(60)
except:
if self._active:
logger.debug('receive failed. restart later', exc_info=1)
time.sleep(10)
self.wait(60)
finally:
if self._active:
now = time.mktime(time.localtime())
@ -166,6 +169,12 @@ class LocalNodesBase(Thread):
self._socket.close()
return Thread.join(self)
def wait(self, timeout):
step = min(timeout, 1)
while self._active and timeout > 0:
time.sleep(step)
timeout -= step
class LocalNodes4(LocalNodesBase):
_BROADCAST = "239.255.255.250"