CIRCUIT_PURPOSE_C_ESTABLISH_REND and CIRCUIT_PURPOSE_S_ESTABLISH_INTRO
so we were being forced to build those from scratch.
This should save us a bit of time. Also fixes bug 173.
svn:r4763
- Add a new extend_info_t datatype to hold information needed to
extend a circuit (addr,port,keyid,onion_key). Use it in cpath and
build_state. Make appropriate functions take or return it instead of
routerinfo_t or keyid.
- #if 0 needless check in circuit_get_by_edge_conn; if nobody triggers this
error in 0.1.0.10, nobody will trigger it.
- Implement new hidden service descriptor format, which contains "extend
info" for introduction points, along with protocol version list.
- Parse new format.
- Generate new format
- Cache old and new formats alongside each other.
- Directories serve "old" format if asked in old way, "newest available"
format if asked in new way.
- Use new format to find introduction points if possible; otherwise fall
back. Keep nickname lists and extendinfo lists in sync.
- Tests for new format.
- Implement new "v2" INTRODUCE cell format.
- Accept new format
- Use new format if we have a versioned service descriptor that says the
server accepts the new format.
- Add documentation for functions and data types.
svn:r4506
to the exit policy of the last hop. Intro and rendezvous circs must
be internal circs, to avoid leaking information. Resolve and connect
streams can use internal circs if they want.
New circuit pooling algorithm: make sure to have enough circs around
to satisfy any predicted ports, and also make sure to have 2 internal
circs around if we've required internal circs lately (with high uptime
if we've seen that lately).
Split NewCircuitPeriod config option into NewCircuitPeriod (30 secs),
which describes how often we retry making new circuits if current ones
are dirty, and MaxCircuitDirtiness (10 mins), which describes how long
we're willing to make use of an already-dirty circuit.
Once rendezvous circuits are established, keep using the same circuit as
long as you attach a new stream to it at least every 10 minutes. (So web
browsing doesn't require you to build new rend circs every 30 seconds.)
Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
circ as necessary, if there are any completed ones lying around when
we try to launch one.
Re-instate the ifdef's to use version-0 style introduce cells, since
there was yet another bug in handling version-1 style. We'll try switching
over again after 0.0.9 is obsolete.
Bugfix: when choosing an exit node for a new non-internal circ, don't take
into account whether it'll be useful for any pending x.onion addresses --
it won't.
Bugfix: we weren't actually publishing the hidden service descriptor when
it became dirty. So we only published it every 20 minutes or so, which
means when you first start your Tor, the hidden service will seem broken.
svn:r3360
high capacity nodes. When building circuits, choose appropriate nodes.
New config option LongLivedPorts to indicate application streams
that will want high uptime circuits.
When attaching a stream to a circuit, pay attention to its requirements.
This means that every single node in an intro rend circuit, not just
the last one, will have a minimum uptime.
Boost the min uptime from an hour to 24 hours.
svn:r3339
- DirFetchPeriod for fetching full directory,
- StatusFetchPeriod for fetching running-routers,
- DirPostPeriod for posting server descriptor,
- RendPostPeriod for posting hidden service descriptors.
Also make sure the hidden service descriptors are at a random
offset from each other, to hinder linkability.
svn:r2889
Now we can try setting an option but back out if it fails to parse, or
if it's disallowed (e.g. changing RunAsDaemon from 1 to 0).
Use parse_line_from_str rather than parse_line_from_file.
svn:r2692
failed at the first hop, it would try to relaunch another circ right
then, even though the first circuit hadn't been populated yet with its
pending_final_cpath.
svn:r2624
fix a potential confusion in fetch_from_buf_http()
make all our int config options non-negative
better bounds checking on options that are ports
svn:r2456
o and/or while avoiding unreliable nodes, depending on goals
o 'fascistfirewall' option to pick dirservers on port 80 and ORs on
port 443.
o if a begin failed due to exit policy, but we believe the IP should have been allowed, switch that router to exitpolicy reject *:* until we get our next directory.
svn:r2231
* \file circuitbuild.c
* \brief The actual details of building circuits.
* \file circuitlist.c
* \brief Manage the global circuit list.
* \file circuituse.c
* \brief Launch the right sort of circuits, attach streams to them.
* \file connection_edge.c
* \brief Handle edge streams.
* \file onion.c
* \brief Functions to queue create cells, and handle onionskin
* parsing and creation.
* \file relay.c
* \brief Handle relay cell encryption/decryption, plus packaging and
* receiving from circuits.
svn:r1863
