Consider closing stream if reader was dropped about tokio-tungstenite HOT 1 CLOSED

These are different things:

• channel() creates 2 channels where you can send to one counterpart and retrieve the sent data via the other counterpart (tx -> rx).
• split(), on the other hand, is a helper method that splits existing Self: Stream + Sink into 2 counterparts. This is not identical to the channel(), because what you send to the Sink counterpart is not forwarded to the Stream counterpart, i.e. you don't retrieve the same things via the rx, but rather you can read from the underlying stream and write to the underlying stream (tx -> stream_tx, stream_rx -> rx). It's possible to read and write separately. One part does not need the other to exist.

from tokio-tungstenite.