impossible to specify --shared-secret in managed mode
Obfsproxy's obfs2 protocol has a --shared-secret option, to make the traffic flow resist what turns out to be trivial dpi.
But it looks like there's no way to pass "obfs2_args" to obfsproxy from the ClientTransportPlugin or ServerTransportPlugin lines?
Ideally on the client side the shared secret should be a function of the bridge, not a global property of all your bridges.
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