Nginx 转发websocket

### wsproxy.conf
client_max_body_size 10m;
client_body_buffer_size 128k;

#Timeout if the real server is dead
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503;

# Advanced Proxy Config
send_timeout 5m;
proxy_read_timeout 240;
proxy_send_timeout 240;
proxy_connect_timeout 240;

# Basic Proxy Config
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
#proxy_set_header X-Forwarded-Proto https;
#proxy_set_header X-Forwarded-Ssl on;
proxy_set_header X-Frame-Options SAMEORIGIN;
#proxy_redirect  http://  $scheme://;
proxy_http_version 1.1;
proxy_set_header Connection "";
proxy_cache_bypass $cookie_session;
proxy_no_cache $cookie_session;
proxy_buffers 32 4k;

server {
  listen 9944;

  location / {
    include  /etc/nginx/sites-enabled/wsproxy.conf;

    proxy_pass         "http://127.0.0.1:9004";

    proxy_set_header   Upgrade $http_upgrade;
    proxy_set_header   Connection "upgrade";
  }
}

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参考：

https://aiopsclub.com/nginx/nginx_websocket_proxy/