Nginx反向代理websocket
配置反向代理
Nginx代理websoket,与普通配置基本相同,但是需要设置好头部信息:
- Host
- Upgrade
- Connection
这几个字段表示服务器请求升级为websocket协议。
配置示例:1
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20map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
server {
server_name localhost;
listen 80;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
proxy_pass http://your-service;
}
}
重点在于:1
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3proxy_set_header Host $host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
这三行就是为了达到前面提到的目的,设置头部,升级协议为websocket。
注意点
有时候我们设置需要升级为websocket的头部是在location之外,在server之内,比如:1
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15server {
server_name localhost;
listen 80;
proxy_set_header Host $host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://your-service;
}
}
这个时候,假如我们在location之内,重新设置了一次Host,则Upgrade与Connection会失效,导致websocket连接不成功。所以如果需要重新设置Host,要确保另外两个头部同时会重新设置。
- 本文链接:https://keepmoving.ren/nginx/proxy-websocket/
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