Maple's Blog.

Nginx 支持 WebSocket

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2021/04/08
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# 编辑nginx.conf,在http区域内一定要添加下面配置:
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}

# map指令的作用:
# 该作用主要是根据客户端请求中$http_upgrade 的值,来构造改变$connection_upgrade的值,即根据变量$http_upgrade的值创建新的变量$connection_upgrade,
# 创建的规则就是{}里面的东西。其中的规则没有做匹配,因此使用默认的,即 $connection_upgrade 的值会一直是 upgrade。然后如果 $http_upgrade 为空字符串的话,
# 那值会是 close。


# 编辑vhosts下虚拟主机的配置文件,在location匹配配置中添加如下内容:
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";

示例如下:
upstream socket.kevin.com {
hash $remote_addr consistent;
server 10.0.12.108:9000;
server 10.0.12.109:9000;
}

location / {
proxy_pass http://socket.kevin.com/;
proxy_set_header Host $host:$server_port;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
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