如果一个浏览器被配置为使用显式的代理服务器，那么在建立WebSocket连接时它首先会向该代理服务器发出一个HTTP CONNECT方法。

If a browser is configured to use an explicit proxy server then it will first issue an HTTP connect method to that proxy server while establishing the WebSocket connection.

youdao

如果一个浏览器被配置为使用显式的代理服务器，那么在建立WebSocket连接时它首先会向该代理服务器发出一个HTTP CONNECT方法。

If a browser is configured to use an explicit proxy server then it will first issue an HTTP connect method to that proxy server while establishing the WebSocket connection.

youdao