Nginx服务端配置
http {
...
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
...
}
upstream websocket {
#假如我们的upstream是127.0.0.1:8010,
server 127.0.0.1:8010;
}
server {
listen 80;
server_name test.testabc.com;
access_log /var/log/nginx/test_websocket.access.log main;
location / {
proxy_pass http://websocket;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade;
}
}
map指令的作用:
根据客户端请求中$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。