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bab221f113
Previously we'd put these strings right on the controllers'
outbufs. But this could cause some trouble, for these reasons:
1) Calling the network stack directly here would make a huge portion
of our networking code (from which so much of the rest of Tor is
reachable) reachable from everything that potentially generated
controller events.
2) Since _some_ events (EVENT_ERR for instance) would cause us to
call connection_flush(), every control_event_* function would
appear to be able to reach even _more_ of the network stack in
our cllgraph.
3) Every time we generated an event, we'd have to walk the whole
connection list, which isn't exactly fast.
This is an attempt to break down the "blob" described in
http://archives.seul.org/tor/dev/Mar-2015/msg00197.html -- the set of
functions from which nearly all the other functions in Tor are
reachable.
Closes ticket 16695.
9 lines
411 B
Plaintext
9 lines
411 B
Plaintext
o Code simplification and refactoring:
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- When generating an event to send to the controller, we no longer
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put the event over the network immediately. Instead, we queue
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these events, and use a Libevent callback to deliver them.
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This change simplifies Tor's callgraph by reducing the number
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of functions from which all other Tor functions are reachable.
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Closes ticket 16695.
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