Is nonBlocking required if using level triggers?

[acgreek]

I'm experimenting using netpoller with tls and websocket (github.com/gobwas/ws/wsutil), and I am concerned that with larger messages, the nonblocking socket read will return less than is needed to complete the websocket frame? From what I found via google search, nonblocking is only necessary when using level triggering, yet netpoll sets nonblocking on all connections.

do you see any problem with making setNonBlocking as optional and do you envision any issue with github.com/gobwas/ws/wsutil framing on top of netpoll