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websocketで複数通信時に起きた問題

Last updated at Posted at 2017-07-12

server.jsと複数のindex.htmlで通信

1人でもブラウザを閉じるとサーバーが閉じてしまう
(起動したnode server.jsが終了する)
→以後通信できなくなる。。。

##解決方法
###server.jsの自動再起動(永続化)
田中さん直伝
サーバー側にforeverを導入

$ npm install -g forever
$ forever server.jsで起動する

###HTMLの自動リロード化
foreverと合わせて、ブラウザ側のindex.htmlにサーバーと通信が切れた時のイベントを設定

index.html
    ws.onclose = function () {
      console.log('closed');
      window.location.reload();
      };

こうすることで、

→だれかがブラウザを閉じる
→サーバーが切断される
→自動的にserver.jsを再起動
→切断されたのを検知したhtmlが再リロード

で無事に通信を続けることができる

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