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Starting with this release, clients using the legacy graphql-ws subprotocol will receive an error when they try to send binary data frames.
Before, binary data frames were silently ignored.
While vaguely defined in the protocol, the legacy graphql-ws subprotocol is generally understood to only support text data frames.
Contributed by [Jonathan Ehwald](https://github.com/DoctorJohn) via [PR #3633](https://github.com/strawberry-graphql/strawberry/pull/3633/)