Websocket.encode: def of bend-kit-websocket@0.4.0.0
Import: import bend-kit-websocket@0.4.0.0/websocket.bend as Websocket
Lines 373-378 of bend-kit-websocket@0.4.0.0/websocket.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-websocket@0.4.0.0/websocket.bend&start_line=373&end_line=378

import Base
import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes

# A frame's octets. A client passes Some{mask key} and the payload goes masked;
# None sends it clear, as a server does. Fails on a frame that breaks rules.
def encode(f: Frame<Bytes.Bytes>, key: Maybe<&2, U32>) -> Result<&1, &1, U32 & String, Bytes.Bytes>:
  Frame{+fin, +op, payload} = f
  Bytes.Bytes{+len, buf} = payload
  encode.checked(rules(fin, 0, op, len), fin, op, key, Bytes.Bytes{len, buf})

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=Bytes
  https://jend.leeeet.dev/definition.txt?path=bend-kit-websocket@0.4.0.0/websocket.bend&name=Frame
  https://jend.leeeet.dev/definition.txt?path=bend-kit-websocket@0.4.0.0/websocket.bend&name=encode.checked
  https://jend.leeeet.dev/definition.txt?path=bend-kit-websocket@0.4.0.0/websocket.bend&name=rules