StatusCode = enum
  scNormal = 1000, scGoingAway = 1001, scProtocolError = 1002, scUnsupported = 1003,
  scReserved = 1004, scNoStatus = 1005, scAbnormal = 1006, scUnsupportedData = 1007,
  scPolicyViolation = 1008, scTooLarge = 1009, scMissingExt = 1010,
  scInternalError = 1011, scRestart = 1012, scTryAgainLater = 1013, scReserved2 = 1014,
  scTLSHandshake = 1015

MessageEvent = object of Event
  data*: cstring
  origin*: cstring

CloseEvent = object of Event
  code*: Natural
  reason*: cstring
  wasClean*: bool

ReadyState = enum
  Connecting = 0, Open = 1, Closing = 2, Closed = 3

WebSocket = ref object of EventTarget
  url*: cstring
  protocol*: cstring
  readyState*: ReadyState
  onopen*: proc (event: Event)
  onclose*: proc (event: CloseEvent)
  onmessage*: proc (event: MessageEvent)

proc openws(url: cstring): WebSocket {.
importcpp: "new WebSocket(#)", deprecated
.}

proc openws(url: string; protocols: seq[string]): WebSocket {.

    importcpp: "new WebSocket(#,@)", deprecated
.}

proc newWebSocket(url: cstring): WebSocket {.
importcpp: "new WebSocket(#)"
.}

proc newWebSocket(url: cstring; protocol: cstring): WebSocket {.

    importcpp: "new WebSocket(#,@)"
.}

proc newWebSocket(url: cstring; protocols: seq[cstring]): WebSocket {.

    importcpp: "new WebSocket(#,@)"
.}

proc addEventListener[](et: EventTarget; ev: cstring;
                       cb: proc (ev: MessageEvent | CloseEvent))

proc send(socket: WebSocket; data: cstring)

proc close(socket: WebSocket)

proc close[](socket: WebSocket; code: StatusCode | Natural)

proc close[](socket: WebSocket; code: StatusCode | Natural; reason: cstring)