101 Switching Protocol

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HTTP  101 Switching Protocol（协议切换）状态码表示服务器应客户端升级协议的请求（Upgrade请求头）正在进行协议切换。

服务器会发送一个Upgrade响应头来表示其正在切换过去的协议。
该过程在协议升级机制(Protocol upgrade mechanism)中详细描述 .

状态

101 Switching Protocol

示例

在使用 WebSockets 时会用到协议切换。

HTTP/1.1 101 Switching Protocols
Upgrade: websocket 
Connection: Upgrade

相关协议

Specification Title
RFC 7231, section 6.2.2: 101 Switching Protocol Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

参见

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    2. 101 Switching Protocol
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