nginx设置ssl代理出这问题。。。

这是我设置内容:

upstream for_ssl {
server 127.0.0.1:1234;
}
proxy_pass http :// for_ssl;

下面是出的错:

400 Bad Request
Sec-WebSocket-Key not found.
This is a WebSocket service and can not be accessed via HTTP.

求高人指点。。

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nginx对长连接做代理的时候有个协议升级的概念
加上这段代码就没问题了,允许协议升级

proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";