This change adds a limit for RPC method names to prevent potential abuse
where large method names could lead to large response sizes.
The limit is enforced in:
- handleCall for regular RPC method calls
- handleSubscribe for subscription method calls
Added tests in websocket_test.go to verify the length limit
functionality for both regular method calls and subscriptions.
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Co-authored-by: Matus Kysel <MatusKysel@users.noreply.github.com>
Co-authored-by: Felix Lange <fjl@twurst.com>
This change adds a configurable limit to websocket message.
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Co-authored-by: tylerni7 <tylerni7@gmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
This fixes a rare issue where the client subscription forwarding loop
would attempt send on the subscription's channel after Unsubscribe has
returned, leading to a panic if the subscription channel was already
closed by the user. Example:
sub, _ := client.Subscribe(..., channel, ...)
sub.Unsubscribe()
close(channel)
The race occurred because Unsubscribe called quitWithServer to tell the
forwarding loop to stop sending on sub.channel, but did not wait for the
loop to actually come down. This is fixed by adding an additional channel
to track the shutdown, on which Unsubscribe now waits.
Fixes#22322
Co-authored-by: Felix Lange <fjl@twurst.com>
