Figure 1 shows a simplified network topology in which clients use a browser to access back-end TCP-based services using a full-duplex HTML5 WebSocket connection.

图1展示了一个简化的网络拓扑，客户端使用浏览器来访问后端基于TCP的服务，这里使用了全双工的HTML5 WebSocket连接。

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The introduction of WebSockets allows fast bi-directional full-duplex connections between a browser and an application, useful for high-performance browser-based applications.

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