In order to curb event queue growth when a client for whatever reason
isn't acking the events we send out, we implement a mechanism for
detecting such "clogging", and proactively kick subscriptions which are
adding too many events to the queue.
If the client hasn't sent an ack for ~s30, any subscription that accrues
more than 50 unacked %facts gets closed to prevent further buildup.
Upon reconnecting, the client will see %kick for the relevant
subscriptions and can open a new subscription as appropriate.
Includes a simple test for this behavior, and updates /app/dbug to be
able to display the newly tracked statistics.
Store the gall events from channel subscriptions as (vaseless) signs,
instead of serialized events. This should be smaller in memory, and
makes it more likely for noun deduplication to happen.
The cost is needing to reserialize upon channel reconnect, but this is
the less common case, and we don't expect it to be particularly slow.
Adds a cors-registry to Eyre's state that tracks allowed and rejected
origins for the purposes of CORS request handling.
For preflight requests, generates a response in-line.
For simple requests, adds CORS headers onto whatever response is given.
See also:
https://groups.google.com/a/urbit.org/g/dev/c/bb82dwEJGzM/m/q2JjNSx5BwAJ
@t further indicates to the caller (although loosely, because auras
are loosely enforced types) that the input should not contain embedded
NUL bytes, which are not valid @t.
Separately, a minor improvement has been made to the performance of
the raw hoon by pinning the gates used in the inner loop.
Prior to this commit, there was a jet mismatch in to-wain (formerly
called lore, and still jetted under that name). 0 bytes in the middle of
a cord caused the jet to crash, whereas the hoon simply treated them as
the end of cord and truncated the output. The history of this behavior
is fraught with controversy. This commit rectifies the current mess with
the following rationale: Null bytes are valid ASCII/UTF-8, and \n\n in
the input will cause null list items in the output, so nulls are (for
the purposes of to-wain) allowed in cords. Trailing nulls cannot be
represented because of the nature of atoms, but that is outside the
scope of to-wain's concern. Therefore to-wain should simply measure the
cord and split on newlines, and do nothing fancy at all with nulls.
In addition, the hoon for to-wain was written in an inefficient style
that produced a lot of intermediate garbage atoms via rsh and cat. This
commit's implementation measures once and cuts once, so to speak, and so
avoids the intermediate garbage. Quick benchmarks suggest it is about
20x faster than the old hoon, but still orders of magnitude slower than
the jetted code. to-wain is the workhorse for the txt mark, so we should
still prefer to have a jet.
The old jet is left wired up under %lore, and should be removed when
support for the old, unupgraded zuse is no longer necessary. A new jet
with matching null handling has been wired up under the name %leer.
Well-behaved secp jets can now plausibly exit if they are given inputs
of the wrong size/range. Previously this was either not checked or the inputs
were silently truncated.
The secp core had some flaws: in particular, the logic for signing/recovery
did not match libsecbp256k1 w.r.t. the enigmatic "recid" (v) value. The jet
hints were also subtly wrong, in that the curve parameters were in a sample
(not an arm) and thus not matched by the jet matching scheme. Consequently,
the jets would be used (but incorrect) for other curve parameters.
Tests were also added to exercise the recovery id cases thoroughly.
Depending on the additions to term.c made in 467d8d239 allows dill to
forget about ansi escape codes, and pass styled text nouns straight on
to vere.
Also removes a bit of logic from drum, which assumed things about the
rendering of escape codes to adjust cursor positioning. Now it simply
states the semantic cursor position, letting the runtime deal with the
potential influence of styling.
Jael now stores a `step` that is combined with the original salt to
produce a new code. A `%step` card is used to increment that value,
and effectively resetting the keys. Because the first `step` is zero,
the first code is the same as before.
Eyre was changed to be notified with `%code-changed` so it can forget
old cookies, sessions and discard all the existing channels.
A new generator was added |code, that does both querying and
resetting the code
|code :: shows current code, step and help
|code %reset :: changes the code
The old +code generator still works correctly.
RFC2396 defines[1] unreserved characters as alphanumerics and nine "mark"
characters. We were only parsing for four of those, leading to parsing failure
for valid URLs.
[1]: https://tools.ietf.org/html/rfc2396#appendix-A
Exposes a scry endpoint. Any requests made to the /app/scry.mark url
under the endpoint will scry into %app using a %gx scry, at the
/scry/noun path, and attempt to convert the scry result into the %mark,
before converting that into the %mime mark, and sending that as an http
response.
Associates channels with the authentication sessions that opened them,
and deletes the channel when its associated session expires.
Also updates the debug dashboard to display channel counts per session.
Set up, by default, on /~/logout.
Sending a POST request to this expires the current session and redirects
to the login page. If the "all" key is set in the request body, expires
all open sessions.
Somehow we ended up with flows which expected to awaken but did not wake
up. This was likely caused by the error in r920j OTA, urbit-os-v1.0.18.
This adds a command which ensures that every flow has an active timer.
I expect this to be needed only once, but it's a pretty general tool, so
it's worth keeping.
I've included an unused @t parameter to more easily add simple debug
commands to ames without having to add a new task
At some point this should be more properly styled similar to +by, +in,
and +to, but for now this reduces duplication and makes the ordered map
available to everyone.
Allow one or more whitespace characters before and/or after the equals sign in
name attribute pairs, such as `<hello a = "yo" />` or `<hello a= "yo" />`.
Following the spec at https://www.w3.org/TR/2006/REC-xml11-20060816/#NT-Eq.
Support /=peers= and /=peer=/~ship scries for getting at all peers and
a specific peer's connection state, respectively.
Moves some internal types into zuse for easier external use.
`at` is for when you expect an array of a certain exact structure. If it
has extra elements, that indicates you were mistaken about the strucutre,
so it should fail to match.
RFC 2396 specifies that segments must be zero or more pchars.[1] We were
deviating from this by requiring at least one pchar per segment.
With this change, we support /some//path, and no longer lose the
trailing slash in /some/path/.
[1]: https://tools.ietf.org/html/rfc2396#section-3.3
-merge will replace |merge so that. Once they reach feature parity and
%info is rewritten to forward to -commit, we can rip out about half of
clay.hoon
Considering some of the options here were atoms, not cells, $% wasn't
appropriate, and led to *etyp:abi:ethereum resulting in ford %ride execution
failure. Simply using $? instead would result in a fish-loop, so here we split
the atom cases from the tagged union ones with a $@.
%park is a plumbing commit task. It guarantees completion in a single
event, so you have to do much of the work before calling it. -commit
is an example of how to do this.
When a ship breaches, we remove all messages that have yet to be
delivered to an app (eg if it's not yet started). We also add
|gall-sear to do this manually, but this shouldn't be needed in normal
operation.
Finally, to unblock ~zod and ~bus on mainnet, we sear one particular
ship automatically on loading hood. It cannot be done manually because
no userpace changes can be made until it's unblocked.
Instead of providing a (unit path), allows for (list path), which better
supports the "update to path and subpath cases".
For example, if /things wants updates about everything, and
/things/specific wants updates about the specific thing, they'll both
need to receive a %fact when the specific thing changes.
Previously, these would have been two separate moves. Now, gall handles
the multi-targeting for you.
This broke when %kick was handled by resubscribing on your own ship
because it processed the %kick before the %leave. For example, `@t`404
at the dojo would put the dojo in an unworkable state.
You want the %leave to be processed first because you can't do a
"resubscribe" in response to that.
Returns the target %zuse contract configuration to mainnet, and also
tweaks the 'arvo-ropsten' build to use %alef instead of %ames.
Also fixes a merge conflict artifact in nix/ops/default.nix.
This removes the %http-response special case from gall. In its place,
we implement a subscription regime with the following steps:
- Agent sends %connect to Eyre
- Eyre pokes agent with %handle-http-response, including unique eyre-id
- Agent passes %start-watching to Eyre with eyre-id and unique app-id
- Eyre subscribes to agent on /http-response/app-id
- Agent produces a %http-response-header fact followed by 0 or more
%http-response-data facts and possibly a %http-response-cancel fact
- Agent produces a %kick to close the subscription, which Eyre
interprets as completion of the message.
This works when there is data. There is currently a bug where if the
response has no data in total (as in the case of a naked 404), no
response will be sent.
This also includes lib/http-handler, which implements a convenient
interface for agents that want to respond immediately with all the data.
This lets them avoid carrying extra state to keep track of pending
requests.
This should really have access to your state and the ability to change
it. Perhaps a more minimalist design would be better: just keep track
of the requests, then hand it off to +on-watch when eyre is ready to
receive responses. It's not clear how to pass in the request data in
+on-watch.
* eth-watcher-2: (21 commits)
eth: move existing chain requests into ethio
eth-watcher: refactor refresh rate to top of file
hook: add pool-group-hook for making invite groups
ethio: add +read-contract for chain state reading
zuse: add delegated-sending address
eth: move eth-watcher's request-rpc into ethio lib
gaze: make compile for latest eth-watcher
drum: start eth-watcher on boot
azimuth-tracker: remove deprecated generator
eth: implement azimuth-tracker using eth-watcher
eth-watcher: ensure logs always sent oldest-first
eth-watcher: allow peers to unconfigured watchdogs
eth-watcher: saner %watch behavior
eth-watcher: implement %clear poke
eth-watcher: store logs in state to implement peer
eth-watcher: move types into /sur file
eth-watcher: properly tag out-peer-data
eth-watcher: single update timer loop
eth-watcher: implement /block peek
eth: turn azimuth-tracker into eth-watcher
...
Signed-off-by: Jared Tobin <jared@tlon.io>
Until now, clients of Jael have had to store the first-seen rift if they
want to reliably detect breaches. Otherwise, they would get a false
positive if they heard an old message about a breach (eg if you kick
azimuth-tracker). Clay and Gall did this correctly, but Ames did not.
Jael already maintains this state, so I added a notification to the
existing subscription that happens whenever it notices a breach (a diff
or full where the new rift is greater than the old one).
Because this is an issue on the live network, I wrote state adapters
for Gall and Clay. The Gall one just removes the rift from our state,
but the Clay one is much more involved because we have to upgrade
instances of the clad monad that are possibly in progress.
Specifically, since more input is possible than before, we must wrap any
in-progress instances of the monad in a function that handles the
potential new input from Jael. This temporarily preservers a copy of
the old kernel, but only until the current commit/merge/update has
completed.
The real solution for Clay is to factor out those IO-heavy instances to
userspace tapp/async/imp/threads, and if an upgrade happens in the
middle, you should simply restart them.
Fixes#1852
* reclamation:
solid pill
arvo: wires up %trim memory-pressure event stubs
u3: wires up the %trim event in the daemon
u3: adds %trim memory-pressure notification "effect"
u3: tweaks |mass output (and fixes inadvertent truncation)
u3: refactors periodic memory reclamation
u3: factors out u3a_idle() to measure free-lists in a road
u3: adds and uses u3a_full/heap/temp road macros
u3: cleans up whitespace, removes dead code in allocator
* jt-gall-refactor: (76 commits)
gall: fix issue id in comment
pills: update solid
gall: handle foreign coup success
gall: only print peek bad result if bad
gall: add basic test harness
pills: update solid, brass, ivory
gall: fix obvious nest-failing tisdot
gall: change '-state' to '-core' for +mo and +ap
zuse, gall: deprecate 'club'
zuse, gall, eyre: deprecate 'cush'
zuse, gall, eyre, dojo: deprecate 'cuft'
gall: remove slam-related printfs
gall: remove deprecated 'mak' from 'agents'
gall: use less vertical spacing throughout
gall: add comment re: unpopulated wex
gall: use less vertical separation when wuthepping
gall: fix whitespace
gall: don't define 'move' as a pair
gall: don't give faces to tags
gall: gut some unused stuff
...
%zuse includes definitions for 'scup' and 'culm', both of which are
superfluous. 'scup' is simply (pair ship desk) and is used only in the
definition of 'culm', a tagged union in which three of the four branches
are commented out (i.e. are unused).
This commit deletes 'scup' and 'culm' and refactors what little code
made use of them.
