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server.py: handle (throw away) ECONNREFUSED from the DNS server.

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This might happen occasionally on a flakey network.  Reported by Ed Maste.
This commit is contained in:
Avery Pennarun 2011-03-19 22:48:15 -07:00
parent 2e8381ecda
commit cfb2592346
1 changed files with 8 additions and 1 deletions
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7
server.py
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@ -119,7 +119,14 @@ class DnsProxy(Handler):
self.sock.send(request) self.sock.send(request)
def callback(self): def callback(self):
try:
data = self.sock.recv(4096) data = self.sock.recv(4096)
except socket.error, e:
if e.args[0] == errno.ECONNREFUSED:
debug2('DNS response: ignoring ECONNREFUSED.\n')
return # might have been spurious; wait for a real answer
else:
raise
debug2('DNS response: %d bytes\n' % len(data)) debug2('DNS response: %d bytes\n' % len(data))
self.mux.send(self.chan, ssnet.CMD_DNS_RESPONSE, data) self.mux.send(self.chan, ssnet.CMD_DNS_RESPONSE, data)
self.ok = False self.ok = False