Dart 的 WebSocket 死活发送不了信息

[Bluek404]

import 'dart:html';

void main() {
  var webSocket = new WebSocket('ws://127.0.0.1:4001');

  var data = "test message";

  if (webSocket != null && webSocket.readyState == WebSocket.OPEN) {
    webSocket.send(data);
  } else {
    print('WebSocket not connected, message $data not sent， State: ${webSocket.readyState}');
  }
}

死活send不了

状态一直是WebSocket.CONNECTING

如果直接send的话就报错

InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable

但是完全可以接收到服务端发送的信息

完全是按照官方doc写的啊

官方文档：

https://api.dartlang.org/apidocs/channels/stable/dartdoc-viewer/dart-dom-html.WebSocket

[Bluek404]

Dartium的报错：
Exception: InvalidStateError: Still in CONNECTING state.

[Bluek404]

好吧解决了
用webSocket.onOpen就行