[tor-dev] Tor path selection upon failure

Liu, Zhuotao zliu48 at illinois.edu
Tue Sep 13 21:28:47 UTC 2016

Hi Folks,

There have been some technical reports about how to deal with the problem when a botnet uses Tor as its primary C&C channel. In this case, the CPU of some relays is exhausted, causing circuit creation failure.

I am wondering currently how a client reacts when its circuit creation fails? Does the client simply resends create cells to the relays on the original path or it will re-select a new path instead?

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