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SS: Reset connection if token is unrecognized #17529

Merged
merged 4 commits into from
Aug 6, 2024
Merged

SS: Reset connection if token is unrecognized #17529

merged 4 commits into from
Aug 6, 2024

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erikjohnston
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This triggers the client to start a new sliding sync connection. If we don't do this and the client asks for the full range of rooms, we end up sending down all rooms and their state from scratch (which can be very slow)

This causes things like element-hq/element-x-ios#3115 after we restart the server

@erikjohnston
SS: Reset connection if token is unrecognized
ff4a4c7 
This triggers the client to start a new sliding sync connection. If we
don't do this and the client asks for the full range of rooms, we end up
sending down all rooms and their state from scratch (which can be very
slow)
@erikjohnston erikjohnston mentioned this pull request Aug 5, 2024
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@erikjohnston erikjohnston marked this pull request as ready for review August 5, 2024 17:26
@erikjohnston erikjohnston requested a review from a team as a code owner August 5, 2024 17:26
MadLittleMods
MadLittleMods reviewed Aug 5, 2024
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synapse/handlers/sliding_sync.py
Comment on lines +496 to +497
# Check that we recognize the connection position, if not tell the
# clients that they need to start again.
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Add the context for why we do this:

If we don't do this and the client asks for the full range of rooms, we end up sending down all rooms and their state from scratch (which can be very slow)

-> We do this to avoid sending down all rooms and their state from scratch (initial = True ) which can be very slow.

synapse/handlers/sliding_sync.py
Comment on lines +496 to +497
# Check that we recognize the connection position, if not tell the
# clients that they need to start again.
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Is the following explanation correct?

Before this change, if the connection_position is unknown, the /sync request should just behave like an incremental sync without the cache layer and return initial = True rooms.

With this new change, we're forcing them to send another initial sync request where we will also return rooms with initial = True. The only difference is that if we reset them, they can request a smaller range and expand over time which will get them some results sooner but will end up taking the same amount of time (more with round-trips and re-processing) in the end to get everything again.

We should consider adding this context as well.

comment example

This allows the client a chance to do an initial request with a smaller range of rooms to get them some results sooner but will end up taking the same amount of time (more with round-trips and re-processing) in the end to get everything again.

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Yup!

synapse/api/errors.py
@@ -128,6 +128,10 @@ class Codes(str, Enum):
# MSC2677
DUPLICATE_ANNOTATION = "M_DUPLICATE_ANNOTATION"

# MSC3575 we are telling the client they need to reset their sliding sync
# connection.
UNKNOWN_POS = "M_UNKNOWN_POS"
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The spec calls this "expiring connections" vs "resetting connections". Probably should just align all of the language to the spec because it also explains how "To handle expired connections".

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(this still says "reset")

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oh nyaryiyr, will fix. (i thought I had got them all 🙁 )

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#17531

tests/rest/client/sliding_sync/test_rooms_required_state.py Outdated Show resolved Hide resolved
MadLittleMods
MadLittleMods approved these changes Aug 6, 2024
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Just a few minor things but looks good if my assumptions line up

erikjohnston and others added 2 commits August 6, 2024 09:47
@erikjohnston erikjohnston merged commit c270355 into develop Aug 6, 2024
39 checks passed
@erikjohnston erikjohnston deleted the erikj/ss_reset_pos_after_restart branch August 6, 2024 09:39
@erikjohnston erikjohnston mentioned this pull request Aug 6, 2024
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erikjohnston added a commit that referenced this pull request Aug 7, 2024
@erikjohnston
Fixup sliding sync comment (#17531)
ceb3686 
c.f.
#17529 (comment)
yingziwu added a commit to yingziwu/synapse that referenced this pull request Aug 13, 2024
@yingziwu
Merge tag 'v1.113.0' into develop
b9f6c72 
No significant changes since 1.113.0rc1.

- Track which rooms have been sent to clients in the experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17447](element-hq/synapse#17447))
- Add Account Data extension support to experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17477](element-hq/synapse#17477))
- Add receipts extension support to experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17489](element-hq/synapse#17489))
- Add typing notification extension support to experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17505](element-hq/synapse#17505))

- Update experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint to handle invite/knock rooms when filtering. ([\#17450](element-hq/synapse#17450))
- Fix a bug introduced in v1.110.0 which caused `/keys/query` to return incomplete results, leading to high network activity and CPU usage on Matrix clients. ([\#17499](element-hq/synapse#17499))

- Update the [`allowed_local_3pids`](https://element-hq.github.io/synapse/v1.112/usage/configuration/config_documentation.html#allowed_local_3pids) config option's msisdn address to a working example. ([\#17476](element-hq/synapse#17476))

- Change sliding sync to use their own token format in preparation for storing per-connection state. ([\#17452](element-hq/synapse#17452))
- Ensure we don't send down negative `bump_stamp` in experimental sliding sync endpoint. ([\#17478](element-hq/synapse#17478))
- Do not send down empty room entries down experimental sliding sync endpoint. ([\#17479](element-hq/synapse#17479))
- Refactor Sliding Sync tests to better utilize the `SlidingSyncBase`. ([\#17481](element-hq/synapse#17481), [\#17482](element-hq/synapse#17482))
- Add some opentracing tags and logging to the experimental sliding sync implementation. ([\#17501](element-hq/synapse#17501))
- Split and move Sliding Sync tests so we have some more sane test file sizes. ([\#17504](element-hq/synapse#17504))
- Update the `limited` field description in the Sliding Sync response to accurately describe what it actually represents. ([\#17507](element-hq/synapse#17507))
- Easier to understand `timeline` assertions in Sliding Sync tests. ([\#17511](element-hq/synapse#17511))
- Reset the sliding sync connection if we don't recognize the per-connection state position. ([\#17529](element-hq/synapse#17529))

* Bump bcrypt from 4.1.3 to 4.2.0. ([\#17495](element-hq/synapse#17495))
* Bump black from 24.4.2 to 24.8.0. ([\#17522](element-hq/synapse#17522))
* Bump phonenumbers from 8.13.39 to 8.13.42. ([\#17521](element-hq/synapse#17521))
* Bump ruff from 0.5.4 to 0.5.5. ([\#17494](element-hq/synapse#17494))
* Bump serde_json from 1.0.120 to 1.0.121. ([\#17493](element-hq/synapse#17493))
* Bump serde_json from 1.0.121 to 1.0.122. ([\#17525](element-hq/synapse#17525))
* Bump towncrier from 23.11.0 to 24.7.1. ([\#17523](element-hq/synapse#17523))
* Bump types-pyopenssl from 24.1.0.20240425 to 24.1.0.20240722. ([\#17496](element-hq/synapse#17496))
* Bump types-setuptools from 70.1.0.20240627 to 71.1.0.20240726. ([\#17497](element-hq/synapse#17497))
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request Sep 14, 2024
@Midar
Update devel/matrix-synapse to 1.114.0
d95af47 
# Synapse 1.114.0 (2024-09-02)

This release enables support for
[MSC4186](matrix-org/matrix-spec-proposals#4186) —
Simplified Sliding Sync. This allows using the upcoming releases of the Element
X mobile apps without having to run a Sliding Sync Proxy.


### Features

- Enable native sliding sync support ([MSC3575](matrix-org/matrix-spec-proposals#3575) and [MSC4186](matrix-org/matrix-spec-proposals#4186)) by default. ([\#17648](element-hq/synapse#17648))




# Synapse 1.114.0rc3 (2024-08-30)

### Bugfixes

- Fix regression in v1.114.0rc2 that caused workers to fail to start. ([\#17626](element-hq/synapse#17626))




# Synapse 1.114.0rc2 (2024-08-30)

### Features

- Improve cross-signing upload when using [MSC3861](matrix-org/matrix-spec-proposals#3861) to use a custom UIA flow stage, with web fallback support. ([\#17509](element-hq/synapse#17509))
- Make `hash_password` script accept password input from stdin. ([\#17608](element-hq/synapse#17608))

### Bugfixes

- Fix hierarchy returning 403 when room is accessible through federation. Contributed by Krishan (@kfiven). ([\#17194](element-hq/synapse#17194))
- Fix content-length on federation `/thumbnail` responses. ([\#17532](element-hq/synapse#17532))
- Fix authenticated media responses using a wrong limit when following redirects over federation. ([\#17543](element-hq/synapse#17543))

### Internal Changes

- MSC3861: load the issuer and account management URLs from OIDC discovery. ([\#17407](element-hq/synapse#17407))
- Refactor sliding sync class into multiple files. ([\#17595](element-hq/synapse#17595))
- Store sliding sync per-connection state in the database. ([\#17599](element-hq/synapse#17599))
- Make the sliding sync `PerConnectionState` class immutable. ([\#17600](element-hq/synapse#17600))
- Add support to `@tag_args` for standalone functions. ([\#17604](element-hq/synapse#17604))
- Speed up incremental syncs in sliding sync by adding some more caching. ([\#17606](element-hq/synapse#17606))
- Always return the user's own read receipts in sliding sync. ([\#17617](element-hq/synapse#17617))
- Replace `isort` and `black` with `ruff`. ([\#17620](element-hq/synapse#17620))
- Refactor sliding sync code to move room list logic out into a separate class. ([\#17622](element-hq/synapse#17622))



### Updates to locked dependencies

* Bump attrs from 23.2.0 to 24.2.0. ([\#17609](element-hq/synapse#17609))
* Bump cryptography from 42.0.8 to 43.0.0. ([\#17584](element-hq/synapse#17584))
* Bump phonenumbers from 8.13.43 to 8.13.44. ([\#17610](element-hq/synapse#17610))
* Bump pygithub from 2.3.0 to 2.4.0. ([\#17612](element-hq/synapse#17612))
* Bump pyyaml from 6.0.1 to 6.0.2. ([\#17611](element-hq/synapse#17611))
* Bump sentry-sdk from 2.12.0 to 2.13.0. ([\#17585](element-hq/synapse#17585))
* Bump serde from 1.0.206 to 1.0.208. ([\#17581](element-hq/synapse#17581))
* Bump serde from 1.0.208 to 1.0.209. ([\#17613](element-hq/synapse#17613))
* Bump serde_json from 1.0.124 to 1.0.125. ([\#17582](element-hq/synapse#17582))
* Bump serde_json from 1.0.125 to 1.0.127. ([\#17614](element-hq/synapse#17614))
* Bump types-jsonschema from 4.23.0.20240712 to 4.23.0.20240813. ([\#17583](element-hq/synapse#17583))
* Bump types-setuptools from 71.1.0.20240726 to 71.1.0.20240818. ([\#17586](element-hq/synapse#17586))

# Synapse 1.114.0rc1 (2024-08-20)

### Features

- Add a flag to `/versions`, `org.matrix.simplified_msc3575`, to indicate whether experimental sliding sync support has been enabled. ([\#17571](element-hq/synapse#17571))
- Handle changes in `timeline_limit` in experimental sliding sync. ([\#17579](element-hq/synapse#17579))
- Correctly track read receipts that should be sent down in experimental sliding sync. ([\#17575](element-hq/synapse#17575), [\#17589](element-hq/synapse#17589), [\#17592](element-hq/synapse#17592))

### Bugfixes

- Start handlers for new media endpoints when media resource configured. ([\#17483](element-hq/synapse#17483))
- Fix timeline ordering (using `stream_ordering` instead of topological ordering) in experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17510](element-hq/synapse#17510))
- Fix experimental sliding sync implementation to remember any updates in rooms that were not sent down immediately. ([\#17535](element-hq/synapse#17535))
- Better exclude partially stated rooms if we must await full state in experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17538](element-hq/synapse#17538))
- Handle lower-case http headers in `_Mulitpart_Parser_Protocol`. ([\#17545](element-hq/synapse#17545))
- Fix fetching federation signing keys from servers that omit `old_verify_keys`. Contributed by @tulir @ Beeper. ([\#17568](element-hq/synapse#17568))
- Fix bug where we would respond with an error when a remote server asked for media that had a length of 0, using the new multipart federation media endpoint. ([\#17570](element-hq/synapse#17570))

### Improved Documentation

- Clarify default behaviour of the
  [`auto_accept_invites.worker_to_run_on`](https://element-hq.github.io/synapse/develop/usage/configuration/config_documentation.html#auto-accept-invites)
  option. ([\#17515](element-hq/synapse#17515))
- Improve docstrings for profile methods. ([\#17559](element-hq/synapse#17559))

### Internal Changes

- Add more tracing to experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17514](element-hq/synapse#17514))
- Fixup comment in sliding sync implementation. ([\#17531](element-hq/synapse#17531))
- Replace override of deprecated method `HTTPAdapter.get_connection` with `get_connection_with_tls_context`. ([\#17536](element-hq/synapse#17536))
- Fix performance of device lists in `/key/changes` and sliding sync. ([\#17537](element-hq/synapse#17537), [\#17548](element-hq/synapse#17548))
- Bump setuptools from 67.6.0 to 72.1.0. ([\#17542](element-hq/synapse#17542))
- Add a utility function for generating random event IDs. ([\#17557](element-hq/synapse#17557))
- Speed up responding to media requests. ([\#17558](element-hq/synapse#17558), [\#17561](element-hq/synapse#17561), [\#17564](element-hq/synapse#17564), [\#17566](element-hq/synapse#17566), [\#17567](element-hq/synapse#17567), [\#17569](element-hq/synapse#17569))
- Test github token before running release script steps. ([\#17562](element-hq/synapse#17562))
- Reduce log spam of multipart files. ([\#17563](element-hq/synapse#17563))
- Refactor per-connection state in experimental sliding sync handler. ([\#17574](element-hq/synapse#17574))
- Add histogram metrics for sliding sync processing time. ([\#17593](element-hq/synapse#17593))



### Updates to locked dependencies

* Bump bytes from 1.6.1 to 1.7.1. ([\#17526](element-hq/synapse#17526))
* Bump lxml from 5.2.2 to 5.3.0. ([\#17550](element-hq/synapse#17550))
* Bump phonenumbers from 8.13.42 to 8.13.43. ([\#17551](element-hq/synapse#17551))
* Bump regex from 1.10.5 to 1.10.6. ([\#17527](element-hq/synapse#17527))
* Bump sentry-sdk from 2.10.0 to 2.12.0. ([\#17553](element-hq/synapse#17553))
* Bump serde from 1.0.204 to 1.0.206. ([\#17556](element-hq/synapse#17556))
* Bump serde_json from 1.0.122 to 1.0.124. ([\#17555](element-hq/synapse#17555))
* Bump sigstore/cosign-installer from 3.5.0 to 3.6.0. ([\#17549](element-hq/synapse#17549))
* Bump types-pyyaml from 6.0.12.20240311 to 6.0.12.20240808. ([\#17552](element-hq/synapse#17552))
* Bump types-requests from 2.31.0.20240406 to 2.32.0.20240712. ([\#17524](element-hq/synapse#17524))

# Synapse 1.113.0 (2024-08-13)

No significant changes since 1.113.0rc1.




# Synapse 1.113.0rc1 (2024-08-06)

### Features

- Track which rooms have been sent to clients in the experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17447](element-hq/synapse#17447))
- Add Account Data extension support to experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17477](element-hq/synapse#17477))
- Add receipts extension support to experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17489](element-hq/synapse#17489))
- Add typing notification extension support to experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint. ([\#17505](element-hq/synapse#17505))

### Bugfixes

- Update experimental [MSC3575](matrix-org/matrix-spec-proposals#3575) Sliding Sync `/sync` endpoint to handle invite/knock rooms when filtering. ([\#17450](element-hq/synapse#17450))
- Fix a bug introduced in v1.110.0 which caused `/keys/query` to return incomplete results, leading to high network activity and CPU usage on Matrix clients. ([\#17499](element-hq/synapse#17499))

### Improved Documentation

- Update the [`allowed_local_3pids`](https://element-hq.github.io/synapse/v1.112/usage/configuration/config_documentation.html#allowed_local_3pids) config option's msisdn address to a working example. ([\#17476](element-hq/synapse#17476))

### Internal Changes

- Change sliding sync to use their own token format in preparation for storing per-connection state. ([\#17452](element-hq/synapse#17452))
- Ensure we don't send down negative `bump_stamp` in experimental sliding sync endpoint. ([\#17478](element-hq/synapse#17478))
- Do not send down empty room entries down experimental sliding sync endpoint. ([\#17479](element-hq/synapse#17479))
- Refactor Sliding Sync tests to better utilize the `SlidingSyncBase`. ([\#17481](element-hq/synapse#17481), [\#17482](element-hq/synapse#17482))
- Add some opentracing tags and logging to the experimental sliding sync implementation. ([\#17501](element-hq/synapse#17501))
- Split and move Sliding Sync tests so we have some more sane test file sizes. ([\#17504](element-hq/synapse#17504))
- Update the `limited` field description in the Sliding Sync response to accurately describe what it actually represents. ([\#17507](element-hq/synapse#17507))
- Easier to understand `timeline` assertions in Sliding Sync tests. ([\#17511](element-hq/synapse#17511))
- Reset the sliding sync connection if we don't recognize the per-connection state position. ([\#17529](element-hq/synapse#17529))



### Updates to locked dependencies

* Bump bcrypt from 4.1.3 to 4.2.0. ([\#17495](element-hq/synapse#17495))
* Bump black from 24.4.2 to 24.8.0. ([\#17522](element-hq/synapse#17522))
* Bump phonenumbers from 8.13.39 to 8.13.42. ([\#17521](element-hq/synapse#17521))
* Bump ruff from 0.5.4 to 0.5.5. ([\#17494](element-hq/synapse#17494))
* Bump serde_json from 1.0.120 to 1.0.121. ([\#17493](element-hq/synapse#17493))
* Bump serde_json from 1.0.121 to 1.0.122. ([\#17525](element-hq/synapse#17525))
* Bump towncrier from 23.11.0 to 24.7.1. ([\#17523](element-hq/synapse#17523))
* Bump types-pyopenssl from 24.1.0.20240425 to 24.1.0.20240722. ([\#17496](element-hq/synapse#17496))
* Bump types-setuptools from 70.1.0.20240627 to 71.1.0.20240726. ([\#17497](element-hq/synapse#17497))
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