問題記錄：本地socket測試無誤後部署發現WebSocket connection to "xxx/xxx"failed

解決方案：

在nginx.conf的http模組新增如下內容

map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

其次在反向配置中Nginx Location下新增如下程式碼

   proxy_http_version 1.1;
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header Connection 
 
"upgrade";

從版本1.3.13開始，nginx實現特殊的操作模式，如果代理伺服器返回帶有程式碼101（交換協議）的響應，則允許在客戶端和代理伺服器之間建立隧道，

並且客戶端要求通過請求中的“升級”標頭：Nginx官網

events {
    worker_connections  1024;
}
 
http {
    include       mime.types;
    default_type  application/octet-stream;
 
    
     map $http_upgrade $connection_upgrade {
        default
 
 upgrade;
        ''      close;
    }
    
    upstream jiaxun.com {
        server localhost:8082;
    }
 
    server {
        listen       80;
        server_name  localhost;
 
        location / {
            root   html;
            index  index.html index.htm;
        }
        
        location 
 
/realtime/websocket {
            proxy_pass http://jiaxun.com;
            proxy_http_version 1.1;
            proxy_connect_timeout 4s;              
            proxy_read_timeout 3600s;   #預設60s沒有傳輸資料就會關閉，延長時間            
            proxy_send_timeout 12s;    
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
        }
 
        error_page   500 502 503 504  /50x.html;
 
        location = /50x.html {
            root   html;
        }
    }
 
}