Nginx配置websocket转发功能

核心配置就是proxy_set开头的部分，主要是设置转发头Upgrade $http_upgrade和Connection ‘upgrade’这两个，下面是主要代码部分

server {
  listen 80; 
  server_name api.wahahahaohe.com;
​
  #当访问socket.io这个路径时转发websocket请求
  #例如api.wahahahaohe.com/socket.io/userinfo
  location /socket.io {
    # 这里是重点，转发websocket需要的设置
    proxy_set_header X-Real_IP $remote_addr;
    proxy_set_header Host $host;
    proxy_set_header X_Forward_For $proxy_add_x_forwarded_for;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_pass http://127.0.0.1:8080/;
  }
}