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1xx · Informational

101Switching Protocols

服务器同意切换协议。

What is HTTP 101?

101 Switching Protocols 表示服务器正在根据客户端的 Upgrade 头切换协议。最常见的是将 HTTP 连接升级为 WebSocket。

Example

GET /chat → Upgrade: websocket → 101 Switching Protocols

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Common Use Cases

  • WebSocket 握手升级
  • HTTP/1.1 升级到 HTTP/2
  • 从 HTTP 升级到 HTTPS

Quick Facts

Code101
Category1xx
TypeInformational

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