Websocket-Error during WebSocket handshake: Unexpected response code: 403解决方案

问题：

webscoket.js:26 WebSocket connection to ‘ws://localhost:8088/DreamWeb/ctrl/websocketServer.do?userId=180627211146gYHGYcQlcBFRqW8nRUC’ failed: Error during WebSocket handshake: Unexpected response code: 403

问题分析：

一，WebSocket 设置为不允许跨域。

二，服务器/代理服务器不支持WebSocket

解决方案

Java

在websocket连接注册时设置允许跨域

服务器设置（以Nginx为例 ）

map $http_upgrade $connection_upgrade {
		default upgrade;
		'' close;
	}
upstream websocket {
		ip_hash;
       server 127.0.0.1:9090 weight=2;
       server 127.0.0.1:9091 weight=2;
}

server {
        listen       8088;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
			proxy_pass http://websocket;
			proxy_http_version 1.1;
			proxy_set_header Origin '';
			proxy_set_header Upgrade $http_upgrade;
			proxy_set_header Connection "Upgrade";
			proxy_connect_timeout 1800; 
            proxy_read_timeout 900; 
            proxy_send_timeout 900; 
        }
}