More asserts for cache correctness.


svn:r6960

 Solve timing-out pending connections. Add pending resolves to expiry queue; when we find an answer, change the pending resolve to "done" and stick the actual answer in the expiry queue as a new entry.  This uses a little more memory, but makes the code simpler than other solutions.


svn:r6956

svn:r6955

 start restructuring dns to use priority queues for expiring entries.


svn:r6954

svn:r6937

svn:r6927

svn:r6926

svn:r6924

Add more asserts in dns_found_answer.  This may confirm my theory that dns_purge_resolve is the culprit.

svn:r6922

 Fix compilation for eventdns dns.c with split structs.


svn:r6908

 Clean up wide lines from last patch.


svn:r6907

 Refactor connection_t into edge, or, dir, control, and base subtypes.  This might save some RAM on busy exit servers, but really matters most in terms of correctness.


svn:r6906

circuit_t into origin_circuit_t and or_circuit_t.  I fixed some
segaults; there may be more.  We still need to move more rendezvous
stuff into subtypes.

This is a trial run for splitting up connection_t; if the approach is
insane, please say so soon so we can do something smarter.

Also, this discards the old HALF_OPEN code, which nobody seems to
want.


svn:r6817

svn:r6803

svn:r6763

svn:r6756

svn:r6751

When using eventdns: suppress logging of addresses when SafeLogging is active, and make set of nameservers configurable from torrc.


svn:r6744

svn:r6730

svn:r6728

svn:r6628

This happened when we got two create cells in a row from the same TLS
connection. It would hand one to the cpuworker, and then immediately
handle the second one -- after it had registered that the first one was
busy, but before it had updated the timestamp that we use to decide how
*long* it's been busy.


svn:r6606

connection_add being called with socket = -1. The only places I can see
where that happen would be if our tor_socketpair succeeds but it hands
back negative values for some of its file descriptors. Perhaps this will
produce more useful assert errors next time.


svn:r6550

Try to log useful messages at info and debug about what we are resolving and what answers we are getting wrt eventdns.


svn:r6547

svn:r6534

Add a new warning to our "warn a lot" list: unused parameters.  This means we have to explicitly "use" unuseds, but it can catch bugs.  (It caught two coding mistakes so far.)


svn:r6532

possible.  Cache at the server side independently from the TTL, to
prevent attackers from probing the server to see who has been asking
for what hostnames.  (Hi, Dan Kaminski!)

Also, clean some whitespace.


svn:r6526

Make dns.c use eventdns.c -- but only when you pass the --enable-eventdns argument to configure.in.  This will *so* not work on Windows yet.


svn:r6525

11 minute jump into the future.


svn:r6465

svn:r6396

connecting and for resolving). Now we tolerate applications
that don't follow the RFCs. But continue to block malformed
names at the socks side.


svn:r6193

i hope they appreciate it.


svn:r6004

svn:r5949

svn:r5654

svn:r5582

we screwed up the formatting in wild and unpredictable ways.

fix it before it becomes convention to format logs in wild and
unpredictable ways.

still need to do src/common/ someday.


svn:r5551

svn:r5490

svn:r5488

svn:r5441

clean up OpenSSL's toys when it's done playing.  (Why isn't there an
OpenSSL_free_everything() function?)


svn:r5321