一、场景

使用nginx代理webSocket链接，nginx响应403

1、nginx访问日志响应403

[18/Aug/2023:09:56:36 +0800] "GET /FS_WEB_ASS/webim_api/socket/message HTTP/1.1" 403 5 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36"

2、浏览器链接失败

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二、nginx配置

	## 云ASS集群
	upstream cloud_ass {
		#ip_hash;
		server 192.168.1.233:8087;
		server 192.168.1.243:8087;
	}

    server {
        listen       8600;
        server_name  localhost;

        location / {
            root   html;
            index  index.html index.htm;
        }
        
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
		

		## 云ASS
		location ~* /FS_WEB_ASS/* {
			proxy_pass http://cloud_ass;
			
			# WebScoket Support
			proxy_http_version 1.1;
			proxy_set_header Upgrade $http_upgrade;
			proxy_set_header Connection "upgrade";
			
			proxy_set_header Origin xxx;
			proxy_set_header X-Real-IP $remote_addr;
			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header Host $http_host;
			proxy_set_header X-NginX-Proxy true;
			break;
		}
    }

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三、原因

是proxy_set_header Origin xxx导致的

Origin xxx的具体作用不明确，有知道的欢迎留言

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四、解决

方式1：proxy_set_header Origin xxx改为proxy_set_header Origin ""

最终配置如下

	## 云ASS集群
	upstream cloud_ass {
		#ip_hash;
		server 192.168.1.233:8087;
		server 192.168.1.243:8087;
	}

    server {
        listen       8600;
        server_name  localhost;

        location / {
            root   html;
            index  index.html index.htm;
        }
        
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
		

		## 云ASS
		location ~* /FS_WEB_ASS/* {
			proxy_pass http://cloud_ass;
			
			# WebScoket Support
			proxy_http_version 1.1;
			proxy_set_header Upgrade $http_upgrade;
			proxy_set_header Connection "upgrade";
			
			# 就改了这一行
			proxy_set_header Origin "";
			proxy_set_header X-Real-IP $remote_addr;
			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_set_header Host $http_host;
			proxy_set_header X-NginX-Proxy true;
			break;
		}
    }

方式2：修改代码

//任何ip都可以使用websocket环境
webSocketHandlerRegistry.addHandler(WebSocketHandler的实现类(),"websocket的访问地址").addInterceptors(new HandshakeInterceptor的实现类()).setAllowedOrigins("*");
 
//不可以使用websocket环境
webSocketHandlerRegistry.addHandler(WebSocketHandler的实现类(),"websocket的访问地址").addInterceptors(new HandshakeInterceptor的实现类()).withSockJS();