==============================
Bugfixes
--------
- Fix a bug introduced in v1.20.0rc1 where the wrong exception was raised when invalid JSON data is encountered. ([\#8291](https://github.com/matrix-org/synapse/issues/8291))
-----BEGIN PGP SIGNATURE-----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=e2T1
-----END PGP SIGNATURE-----
Merge tag 'v1.20.0rc3' into develop
Synapse 1.20.0rc3 (2020-09-11)
==============================
Bugfixes
--------
- Fix a bug introduced in v1.20.0rc1 where the wrong exception was raised when invalid JSON data is encountered. ([\#8291](https://github.com/matrix-org/synapse/issues/8291))
Some Linux distros have begun disabling TLSv1.0 and TLSv1.1 by default
for security reasons, for example in Fedora 33 onwards:
https://fedoraproject.org/wiki/Changes/StrongCryptoSettings2
Use TLSv1.2 for the fake TLS servers created in the test suite, to avoid
failures due to OpenSSL disallowing TLSv1.0:
<twisted.python.failure.Failure OpenSSL.SSL.Error: [('SSL routines',
'ssl_choose_client_version', 'unsupported protocol')]>
Signed-off-by: Dan Callaghan <djc@djc.id.au>
* Pull Sentinel out of LoggingContext
... and drop a few unnecessary references to it
* Factor out LoggingContext.current_context
move `current_context` and `set_context` out to top-level functions.
Mostly this means that I can more easily trace what's actually referring to
LoggingContext, but I think it's generally neater.
* move copy-to-parent into `stop`
this really just makes `start` and `stop` more symetric. It also means that it
behaves correctly if you manually `set_log_context` rather than using the
context manager.
* Replace `LoggingContext.alive` with `finished`
Turn `alive` into `finished` and make it a bit better defined.
The `http_proxy` and `HTTPS_PROXY` env vars can be set to a `host[:port]` value which should point to a proxy.
The address of the proxy should be excluded from IP blacklists such as the `url_preview_ip_range_blacklist`.
The proxy will then be used for
* push
* url previews
* phone-home stats
* recaptcha validation
* CAS auth validation
It will *not* be used for:
* Application Services
* Identity servers
* Outbound federation
* In worker configurations, connections from workers to masters
Fixes#4198.
This refactors MatrixFederationAgent to move the SRV lookup into the
endpoint code, this has two benefits:
1. Its easier to retry different host/ports in the same way as
HostnameEndpoint.
2. We avoid SRV lookups if we have a free connection in the pool
If we have recently seen a valid well-known for a domain we want to
retry on (non-final) errors a few times, to handle temporary blips in
networking/etc.
This gives a bit of a grace period where we can attempt to refetch a
remote `well-known`, while still using the cached result if that fails.
Hopefully this will make the well-known resolution a bit more torelant
of failures, rather than it immediately treating failures as "no result"
and caching that for an hour.
It costs both us and the remote server for us to fetch the well known
for every single request we send, so we add a minimum cache period. This
is set to 5m so that we still honour the basic premise of "refetch
frequently".
There are a few changes going on here:
* We make checking the signature on a key server response optional: if no
verify_keys are specified, we trust to TLS to validate the connection.
* We change the default config so that it does not require responses to be
signed by the old key.
* We replace the old 'perspectives' config with 'trusted_key_servers', which
is also formatted slightly differently.
* We emit a warning to the logs every time we trust a key server response
signed by the old key.
Patrick Cloke