The intuition here is that these strings may end up in the hpack table,
and then unnecessarily extend the lifetime of the read blocks.
Instead, take a copy of these short strings when we need to and allow
the incoming large memory object to be discarded.
---------
Co-authored-by: ctiller <ctiller@users.noreply.github.com>
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Along with an experiment this time
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This reverts commit e107ff5e99.
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Noticed some inconsistencies in our keepalive configuration -
* Earlier, even if keepalive pings were disabled, we would be scheduling
keepalive pings at an interval of INT_MAX ms.
* We were not using `g_default_client_keepalive_permit_without_calls` /
`g_default_server_keepalive_permit_without_calls`. They are both false
by default but they can be overridden in
`grpc_chttp2_config_default_keepalive_args`.
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Co-authored-by: ctiller <ctiller@users.noreply.github.com>
(This is a re-open PR for https://github.com/grpc/grpc/pull/32999, which
was closed accidentally due to the branch re-base and force-push)
Implement the frame serialization/deserialization method in chaotic-good
transport.
Previous comments from Craig:
- Since messages are not part of the framing system anymore, I think we
should remove ReceiveMessage (and therefore ReceivePadding) from this
type.
(instead we should add some helper functions to get the message lengths)
-- Resolved
- This approach will cause all frame manipulation code to know about
this serialization detail, rather than just the code that's serializing
it - I think it would be better to keep the type, flags separation (even
if we need to change the flags representation)
-- Done, changed back to type, flags separation.
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WireWriter implementation schedules actions to be run by `ExecCtx`. We
should flush pending actions before destructing
`end2end_testing::g_transaction_processor`, which need to be alive to
handle the scheduled actions. Otherwise,
we get heap-use-after-free error because the testing fixture
(`end2end_testing::g_transaction_processor`) is destructed before all
the scheduled actions are run.
This lowers end2end binder transport test failure rate from 0.23% to
0.15%, according to internal tool that runs the test for 15000 times
under various configuration.
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The PR also creates a separate BUILD target for:
- chttp2 context list
- iomgr buffer_list
- iomgr internal errqueue
This would allow the context list to be included as standalone
dependencies for EventEngine implementations.
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Co-authored-by: ctiller <ctiller@users.noreply.github.com>
(hopefully last try)
Add new channel arg GRPC_ARG_ABSOLUTE_MAX_METADATA_SIZE as hard limit
for metadata. Change GRPC_ARG_MAX_METADATA_SIZE to be a soft limit.
Behavior is as follows:
Hard limit
(1) if hard limit is explicitly set, this will be used.
(2) if hard limit is not explicitly set, maximum of default and soft
limit * 1.25 (if soft limit is set) will be used.
Soft limit
(1) if soft limit is explicitly set, this will be used.
(2) if soft limit is not explicitly set, maximum of default and hard
limit * 0.8 (if hard limit is set) will be used.
Requests between soft and hard limit will be rejected randomly, requests
above hard limit will be rejected.
Previously we triggered a flow control update when `announced <
target/2`, but if `target==1` then we fail to send a flow control update
(announced is never less than 1/2==0) and break our forward progress
guarantees.
b/259780449 internally.
This is a big rewrite of global config.
It does a few things, all somewhat intertwined:
1. centralize the list of configuration we have to a yaml file that can
be parsed, and code generated from it
2. add an initialization and a reset stage so that config vars can be
centrally accessed very quickly without the need for caching them
3. makes the syntax more C++ like (less macros!)
4. (optionally) adds absl flags to the OSS build
This first round of changes is intended to keep the system where it is
without major changes. We pick up absl flags to match internal code and
remove one point of deviation - but importantly continue to read from
the environment variables. In doing so we don't force absl flags on our
customers - it's possible to configure grpc without the flags - but
instead allow users that do use absl flags to configure grpc using that
mechanism. Importantly this lets internal customers configure grpc the
same everywhere.
Future changes along this path will be two-fold:
1. Move documentation generation into the code generation step, so that
within the source of truth yaml file we can find all documentation and
data about a configuration knob - eliminating the chance of forgetting
to document something in all the right places.
2. Provide fuzzing over configurations. Currently most config variables
get stashed in static constants across the codebase. To fuzz over these
we'd need a way to reset those cached values between fuzzing rounds,
something that is terrifically difficult right now, but with these
changes should simply be a reset on `ConfigVars`.
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Co-authored-by: ctiller <ctiller@users.noreply.github.com>
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This compiles for //:grpc, but not for tests yet.
It's the right approach though - @veblush hoping this is something you
can pick up and finish off.
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* Fix flakiness of `End2EndBinderTransportTest/UnaryCallServerTimeout`
Add `grpc_test_slowdown_factor()` for the deadline in `End2EndBinderTransportTest/UnaryCallServerTimeout` to reduce flakiness
* Fix
Craig Tiller
Esun Kim
Yash Tibrewal
Ming-Chuan
nanahpang
Mark D. Roth
Vignesh Babu
Alisha Nanda
Jan Tattermusch
Cheng-Yu Chung
tsunche
Yijie Ma
Mao