没有报错，但是没仔细测试过

user  nginx; 
worker_processes  auto; 
pid    /var/run/nginx.pid; 
events { 
    worker_connections 1024; 
} 
 
stream { 
    upstream psql{ 
        server 1.1.1.1:5432; 
    } 
    upstream wb{ 
        server 2.2.2.2:8080; 
    } 
    map $server_addr $name { 
        psql.funenc.xyz psql; 
        fun.cagy.io     wb; 
 
    } 
    server { 
    listen 80; 
    proxy_pass $name; 
     
    } 
}