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* divorce circuit building from user connectionsRoger Dingledine2003-04-16
| | | | | | | | now we rebuild the circuit periodically (but only if it's been used), and we can further abstract it to do incremental circuit building, etc. svn:r233
* put most of the remaining exit policy stuff inRoger Dingledine2003-04-08
| | | | | | | route selection still doesn't pay attention to exit policies though svn:r227
* Add magic to end of C files to make emacs happy; split test invocation into ↵Nick Mathewson2003-04-07
| | | | | | separate file. svn:r224
* Finish zlib and half-open; switch to 3des (ede/ofb)Nick Mathewson2003-03-19
| | | | svn:r198
* greatly simplify this notion of 'roles':Roger Dingledine2003-03-18
| | | | | | | | if your ORPort is non-zero then you must connect to all nodes if your DirPort is non-zero then you must act like a directory server svn:r192
* Remove extraneous (and non-ansi) semisNick Mathewson2003-03-17
| | | | svn:r186
* rudimentary dns caching (of both resolves and resolve failures)Roger Dingledine2003-02-14
| | | | | | | serious performance increase over non-caching svn:r158
* major overhaul: dns slave subsystem, topicsRoger Dingledine2003-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | on startup, it forks off a master dns handler, which forks off dns slaves (like the apache model). slaves as spawned as load increases, and then reused. excess slaves are not ever killed, currently. implemented topics. each topic has a receive window in each direction at each edge of the circuit, and sends sendme's at the data level, as per before. each circuit also has receive windows in each direction at each hop; an edge sends a circuit-level sendme as soon as enough data cells have arrived (regardless of whether the data cells were flushed to the exit conns). removed the 'connected' cell type, since it's now a topic command within data cells. at the edge of the circuit, there can be multiple connections associated with a single circuit. you find them via the linked list conn->next_topic. currently each new ap connection starts its own circuit, so we ought to see comparable performance to what we had before. but that's only because i haven't written the code to reattach to old circuits. please try to break it as-is, and then i'll make it reuse the same circuit and we'll try to break that. svn:r152
* use a rbtree for replay detection, rather than linear searchRoger Dingledine2002-12-31
| | | | | | | | when we had lots of new onions coming in, we were using 40% of our time searching through the tracked_onions linked list. svn:r150
* onions go on and off the network correctly nowRoger Dingledine2002-12-03
| | | | | | | | we're closer to an OS X port CVS: ---------------------------------------------------------------------- svn:r146
* onions expire after a day, not an hourRoger Dingledine2002-12-03
| | | | | | | | | this was a major faq, because it would fail with an error only on the *server* side when the client-side time was wrong. the client would simply not work. svn:r145
* two more rare race conditionsRoger Dingledine2002-11-28
| | | | svn:r143
* create cells are now queued and processed only when idleRoger Dingledine2002-11-27
| | | | | | | | | | | we also queue data cells destined for a circuit that is pending, and process them once the circuit opens destroys reach into the queue and remove the pending onion, along with its collected data cells svn:r142
* remove popt dependency, consolidate config stuffRoger Dingledine2002-11-23
| | | | | | | reformat parts of onion.c svn:r136
* cleanup and a variety of bugfixesRoger Dingledine2002-10-02
| | | | svn:r132
* Add convenience functions to wrap create and init for symmetric ciphers; ↵Nick Mathewson2002-10-02
| | | | | | clean up error handling in onion.c svn:r131
* cleanupRoger Dingledine2002-09-28
| | | | | | | | | | prkey is only fetched when it's needed tor nodes who aren't dirservers now fetch directories and autoconnect to new nodes listed in the directory default role is a non-dirserver node svn:r120
* laying the groundwork for dynamic router listsRoger Dingledine2002-09-24
| | | | | | | | | | | | | | | | revamped the router reading section reference counting for crypto pk env's (so we can dup them) we now read and write pem pk keys from string rather than from FILE*, in anticipation of fetching directories over a socket (so now on startup we slurp in the whole file, then parse it as a string) fixed a bug in the proxy side, where you could get some circuits wedged if they showed up while the connection was being made svn:r110
* synchronize to the version i've been giving people to testRoger Dingledine2002-09-19
| | | | svn:r104
* onion proxies now work (i think)Roger Dingledine2002-09-04
| | | | svn:r96
* clarifying the empty semicolonRoger Dingledine2002-09-03
| | | | svn:r90
* Port to MacOS XNick Mathewson2002-09-03
| | | | svn:r88
* port is now kept in host order except in sin_portRoger Dingledine2002-08-24
| | | | svn:r82
* cleanup: don't use size_t when you mean intRoger Dingledine2002-08-24
| | | | | | | size_t is what you get back from sizeof(). no more, no less. svn:r80
* changed path selection so it's actually random againRoger Dingledine2002-08-23
| | | | svn:r78
* cleaned up new_route()Roger Dingledine2002-08-23
| | | | | | | now it deals gracefully with too few connected routers (i think) svn:r77
* Changed crypto calls to go through common/crypto.[hc] instead of calling ↵Matej Pjafjar2002-08-22
| | | | | | OpenSSL directly. svn:r76
* only choose routers for the onion that are currently connected to usRoger Dingledine2002-07-22
| | | | svn:r72
* bugfix: create_onion now works with routelen>2Roger Dingledine2002-07-20
| | | | svn:r66
* Implemented router twinsRoger Dingledine2002-07-18
| | | | | | | | | | | I modified new_route so we don't pick twins back-to-back in the path. I also had to patch my previous uses of connection_twin_get_by_addr_port() because they assumed that "addr" and "port" would be the same for a twin as for the original router. svn:r56
* Implemented link padding and receiver token bucketsRoger Dingledine2002-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Each socket reads at most 'bandwidth' bytes per second sustained, but can handle bursts of up to 10*bandwidth bytes. Cells are now sent out at evenly-spaced intervals, with padding sent out otherwise. Set Linkpadding=0 in the rc file to send cells as soon as they're available (and to never send padding cells). Added license/copyrights statements at the top of most files. router->min and router->max have been merged into a single 'bandwidth' value. We should make the routerinfo_t reflect this (want to do that, Mat?) As the bandwidth increases, and we want to stop sleeping more and more frequently to send a single cell, cpu usage goes up. At 128kB/s we're pretty much calling poll with a timeout of 1ms or even 0ms. The current code takes a timeout of 0-9ms and makes it 10ms. prepare_for_poll() handles everything that should have happened in the past, so as long as our buffers don't get too full in that 10ms, we're ok. Speaking of too full, if you run three servers at 100kB/s with -l debug, it spends too much time printing debugging messages to be able to keep up with the cells. The outbuf ultimately fills up and it kills that connection. If you run with -l err, it works fine up through 500kB/s and probably beyond. Down the road we'll want to teach it to recognize when an outbuf is getting full, and back off. svn:r50
* Integrated onion proxy into or/Roger Dingledine2002-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | The 'or' process can now be told (by the global_role variable) what roles this server should play -- connect to all ORs, listen for ORs, listen for OPs, listen for APs, or any combination. * everything in /src/op/ is now obsolete. * connection_ap.c now handles all interactions with application proxies * "port" is now or_port, op_port, ap_port. But routers are still always referenced (say, in conn_get_by_addr_port()) by addr / or_port. We should make routers.c actually read these new ports (currently I've kludged it so op_port = or_port+10, ap_port=or_port+20) * circuits currently know if they're at the beginning of the path because circ->cpath is set. They use this instead for crypts (both ways), if it's set. * I still obey the "send a 0 back to the AP when you're ready" protocol, but I think we should phase it out. I can simply not read from the AP socket until I'm ready. I need to do a lot of cleanup work here, but the code appears to work, so now's a good time for a checkin. svn:r22
* Initial revisionRoger Dingledine2002-06-26
svn:r2