1. 22 Aug, 2002 1 commit
  2. 22 Jul, 2002 1 commit
  3. 18 Jul, 2002 2 commits
    • Roger Dingledine's avatar
      Implemented router twins · 21478985
      Roger Dingledine authored
      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.
    • Roger Dingledine's avatar
      Implemented congestion control · 267434bd
      Roger Dingledine authored
      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.
  4. 16 Jul, 2002 3 commits
    • Roger Dingledine's avatar
      new link padding scheme · ccdef66b
      Roger Dingledine authored
      we're now much more robust when bandwidth varies: instead of forcing a
      fixed bandwidth on the link, we instead use what the link will give us,
      up to our bandwidth.
    • Roger Dingledine's avatar
      new config files, some bugfixes · c951c6f1
      Roger Dingledine authored
    • Roger Dingledine's avatar
      Implemented link padding and receiver token buckets · 117cbeea
      Roger Dingledine authored
      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,
      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.
  5. 12 Jul, 2002 2 commits
  6. 10 Jul, 2002 1 commit
  7. 08 Jul, 2002 1 commit
    • Roger Dingledine's avatar
      put in the support for 'router twins' · 0a3da3ae
      Roger Dingledine authored
      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.
  8. 05 Jul, 2002 1 commit
  9. 03 Jul, 2002 1 commit
  10. 02 Jul, 2002 1 commit
    • Roger Dingledine's avatar
      Integrated onion proxy into or/ · d9829255
      Roger Dingledine authored
      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.
  11. 30 Jun, 2002 1 commit
  12. 26 Jun, 2002 1 commit