Nginx做负载均衡之后，WebSocket无法直接连接到服务器，需要进行一些额外的配置

nginx.conf配置：

http节点下：

  1. #websocket配置
  2. map $http_upgrade $connection_upgrade {
  3.             default upgrade;
  4.             '' close;
  5. }
  1. server {
  2.   listen 80;
  3.   server_name www.easyboot.xyz;
  4.   location / {
  5.     proxy_pass http://localhost:8080;
  7.     #配置Nginx支持webSocket开始
  8.     proxy_set_header Host $http_host;
  10.     proxy_http_version 1.1;
  11.     proxy_set_header Upgrade $http_upgrade;
  12.     proxy_set_header Connection "upgrade";
  13.     }
  14. }

注意上述的「map」与「server」节点平级