WebTransport API：下一代 Web 实时通信的潜力

好的，各位观众老爷们，大家好！我是你们的老朋友，人称“代码界的段子手”的编程专家阿码。今天咱们要聊一个听起来高大上，实际上很有趣的技术——WebTransport API。

WebTransport API：下一代 Web 实时通信的潜力，还是“潜力股”？

各位，先别被“下一代”这个词吓到，也别一听“实时通信”就想到复杂的底层协议。咱们今天的目标是：用最接地气的方式，把这个WebTransport API给扒个精光，让大家明白它到底是何方神圣，又能给我们的Web应用带来什么惊喜。

一、开场白：老司机带你回顾Web实时通信的前世今生

在Web的世界里，实时通信一直是个让人头疼的问题。想想看，你想和服务器保持“热线”联系，随时接收消息，这事儿可没那么简单。

• 最初的挣扎：轮询（Polling）

  最早的时候，我们的浏览器就像个勤劳的小蜜蜂，不停地问服务器：“喂，有新消息吗？喂，有新消息吗？”这种方式叫做轮询（Polling）。

  ![轮询示意图：小蜜蜂嗡嗡嗡](data:image/png;base64,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