Websocket.header.key: def of bend-kit-websocket@0.4.0.0
Import: import bend-kit-websocket@0.4.0.0/websocket.bend as Websocket
Lines 403-413 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=403&end_line=413

import Base

# The mask key (§5.3) follows the length; its first octet is the key's low byte.
def header.key(m: Bool, t: List<&2, U32>, +masked: Bool, +b0: U32, +hs: U32, +hi: U32, +len: U32) -> Header:
  match m:
    case True{}:
      match t:
        case Con{+k0, Con{+k1, Con{+k2, Con{+k3, r}}}}:
          header.check(masked, b0, True{}, (k0 .|. (k1 << 8n) .|. (k2 << 16n) .|. (k3 << 24n) : U32), (hs + 4 : U32), hi, len)
        case _:
          HNeed{}
    case False{}:
      header.check(masked, b0, False{}, 0, hs, hi, len)

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shln
  https://jend.leeeet.dev/definition.txt?path=bend-kit-websocket@0.4.0.0/websocket.bend&name=Header
  https://jend.leeeet.dev/definition.txt?path=bend-kit-websocket@0.4.0.0/websocket.bend&name=header.check