websocket转发

new WebSocket('ws://1.1.0.0:8083/ws')

#必须添加的
map $http_upgrade $connection_upgrade {
     default upgrade;
     '' close;
}
 
 server {
     #普通的端口
     listen 8083;
     root /web_cloud/dist;
 
     location /{
             try_files $uri $uri/ /index.html;
     }
     # 正常的接口请求
     location /api/ {
             proxy_pass http://localhost:2021;
             proxy_set_header  Host $http_host;
             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 $scheme;
     }
     # 转发ws
     location ^~ /ws {
             # 后台准备的websocket地址端口
             proxy_pass http://localhost:9092;
             # 其他参数都一样
             proxy_read_timeout 300s;
             proxy_send_timeout 300s;
             proxy_set_header  Host $http_host;
             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 $scheme;
             proxy_http_version 1.1;
             proxy_set_header Upgrade $http_upgrade;
             proxy_set_header Connection $connection_upgrade;
     }
}

$http_upgrade是一个内置变量，表示客户端请求的Upgrade头部字段的值。这个字段通常用于指示客户端希望升级到的协议，例如从HTTP升级到WebSocket。
$connection_upgrade是一个自定义变量，通过map指令来设置它的值。
^~ 为优先前缀匹配，匹配到后不在匹配其他 location

alise部署前端

try_files：需要加上alise前缀
index.html中路径需要调整为 /path/

location /path {
   alias "/usr/local/nginx/hsor_pad/";
   try_files $uri $uri/ /path/index.html;
   index  index.html index.htm;
}

sse 转发

存在 sse 流式接口的时候要做一些特殊的配置。

location /api-sse/ {
    proxy_pass http://10.200.41.241:8000/;
    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_set_header X-Forwarded-Proto $scheme;
 
    # SSE 特别需要下面这两项
    proxy_http_version 1.1;
    proxy_set_header Connection '';
 
    # 防止 Nginx 缓存流式响应
    proxy_buffering off;
 
    # 路由重写
    rewrite ^/api-netmind/(.*)$ /$1 break;
}