Suggested by Lucky Green.
o Hidden service performance improvements:
- - Reduce extension timeout for introduction circuits on the hidden
- service side from 60 to 30 seconds.
+ - When the client launches an introduction circuit, retry with a
+ new circuit after 30 seconds rather than 60 seconds.
- Launch a second client-side introduction circuit in parallel
after a delay of 15 seconds (based on work by Christian Wilms).
- Hidden services start out building five intro circuits rather