vim /etc/nginx/sites-enabled/xxx.conf

add :

map $http_upgrade $connection_upgrade {

default upgrade;

'' close;

}

upstream websocketio {

server 127.0.0.1:8999;

}

server {

listen 80;

server_name relay.xxxx.com ;

location / {

proxy_pass http://websocketio;

proxy_http_version 1.1;

proxy_set_header Upgrade $http_upgrade;

proxy_set_header Connection $connection_upgrade;

proxy_set_header Host $host;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_connect_timeout 60s;

proxy_read_timeout 600s;

}

}