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* streams are now 8 bytes, and are recognized by intermediate hops•••the OP only crypts the appropriate number of times depending on which layer (hop on the path) it's for/from. svn:r262 Roger Dingledine2003-05-02
* cpath is now a doubly linked list, not an array•••svn:r260 Roger Dingledine2003-05-01
* terminology shift: data->relay, topic->relay, topic->stream•••svn:r258 Roger Dingledine2003-05-01
* bugfix: don't segfault if there's no valid circuit open•••svn:r253 Roger Dingledine2003-04-19
* Choose correct abstraction for topic_foo. Abstract random-integer code•••svn:r249 Nick Mathewson2003-04-17
* Use cell.topic* fields in ap_handshake_send_begin•••svn:r248 Nick Mathewson2003-04-17
* divorce circuit building from user connections•••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 Roger Dingledine2003-04-16
* refactored some duplicate code into connection_edge.c•••svn:r230 Roger Dingledine2003-04-11
* Add magic to end of C files to make emacs happy; split test invocation into s...•••svn:r224 Nick Mathewson2003-04-07
* begin cells are now address:port, not address,port•••(breaks backward compatibility) svn:r222 Roger Dingledine2003-04-05
* Add other side of half-open-connection logic (still disabled•••svn:r206 Nick Mathewson2003-03-19
* Be clear about whether we are using half-open connections•••svn:r204 Nick Mathewson2003-03-19
* Finish zlib and half-open; switch to 3des (ede/ofb)•••svn:r198 Nick Mathewson2003-03-19
* greatly simplify this notion of 'roles':•••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 Roger Dingledine2003-03-18
* Add code for end-to-end zlib compression. Still needs flow-control•••svn:r187 Nick Mathewson2003-03-17
* Make ACI anti-collision logic work; make sure that cells are filled with 0s.•••svn:r176 Nick Mathewson2003-03-11
* Bugfixes and enhancements in sendmes and dns farm•••svn:r161 Roger Dingledine2003-02-18
* fix endian issues for topics -- they might work on bsd now•••(they wouldn't have before) alternate code which bypasses the dns farm, so we can compare speed svn:r154 Roger Dingledine2003-02-06
* make reusing circuits work (and be the default)•••performance is better, but not by much. not sure why yet. svn:r153 Roger Dingledine2003-02-06
* major overhaul: dns slave subsystem, topics•••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 Roger Dingledine2003-01-26
* expire unfinished handshakes too•••don't list non-open ORs in the directory svn:r134 Roger Dingledine2002-10-13
* cleanup and a variety of bugfixes•••svn:r132 Roger Dingledine2002-10-02
* cleanup•••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 Roger Dingledine2002-09-28
* mozilla actually cares about the reply version•••tor can now interface directly with mozilla, as a socks 4 host. but note that mozilla does the dns resolution itself, so you're leaking anonymity. svn:r119 Roger Dingledine2002-09-27
* support socks4 too•••svn:r118 Roger Dingledine2002-09-27
* another bugfix on the proxy side•••should be more reliable now (?) svn:r111 Roger Dingledine2002-09-26
* laying the groundwork for dynamic router lists•••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 Roger Dingledine2002-09-24
* more robust when only some of the socks info has arrived•••svn:r108 Roger Dingledine2002-09-23
* onion proxy now speaks socks4a•••httpap is obsolete; we support privoxy directly now! smtpap is obsolete; need to find a good socks4a-enabled smtp proxy/client I dub thee 0.0.1. svn:r107 Roger Dingledine2002-09-22
* synchronize to the version i've been giving people to test•••svn:r104 Roger Dingledine2002-09-19
* added 'connected' cell type•••see http://archives.seul.org/or/dev/Sep-2002/msg00018.html svn:r103 Roger Dingledine2002-09-17
* minor race condition•••(it seemed to work anyway, but...) svn:r100 Roger Dingledine2002-09-09
* port is now kept in host order except in sin_port•••svn:r82 Roger Dingledine2002-08-24
* Changed crypto calls to go through common/crypto.[hc] instead of calling Open...•••svn:r76 Matej Pjafjar2002-08-22
* Code cleaned up to be less noisy•••svn:r71 Roger Dingledine2002-07-22
* Implemented router twins•••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 Roger Dingledine2002-07-18
* Implemented congestion control•••Servers are allowed to send 100 cells initially, and can't send more until they receive a 'sendme' cell from that direction, indicating that they can send 10 more cells. As it currently stands, the exit node quickly runs out of window, and sends bursts of 10 whenever a sendme cell gets to him. This is much much much faster (and more flexible) than the old "give each circuit 1 kB/s and hope nothing overflows" approach. Also divided out the connection_watch_events into stop_reading, start_writing, etc. That way we can control them separately. svn:r54 Roger Dingledine2002-07-18
* Implemented link padding and receiver token buckets•••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 Roger Dingledine2002-07-16
* put in the support for 'router twins'•••basically, a twin is a router which is different except it shares the same keypair. so in cases where we want to find a "next router" and all we really care is that it can decrypt the next onion layer, then a twin is just as good. we still need to decide how to mark twins in the routerinfo_t and in the routers config file. svn:r30 Roger Dingledine2002-07-08
* general cleanup•••svn:r29 Roger Dingledine2002-07-05
* Integrated onion proxy into or/•••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 Roger Dingledine2002-07-02