WebSocket遇到的一些问题

一 、Nginx配置websocket

 

为了解决Nginx转发不能进行websocket通信问题

将nginx配置文件添加如下内容：

 

map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
upstream websocket {
server 192.168.100.10:8010;
}
server {
listen 8020;
location / {
proxy_pass http://websocket;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "Upgrade";
}
}

 

二、Nginx拦截器解决浏览器兼容问题

 

public class HandshakeInterceptor extends HttpSessionHandshakeInterceptor {
 
private final Logger logger = LoggerFactory.getLogger(HandshakeInterceptor.class);
 
@Override
public boolean beforeHandshake(ServerHttpRequest request,
ServerHttpResponse response, WebSocketHandler wsHandler,
Map<String, Object> attributes) throws Exception {
logger.info("==============Before Handshake===============");
/** 在拦截器内强行修改websocket协议，将部分浏览器不支持的 x-webkit-deflate-frame 扩展修改成 permessage-deflate */
if(request.getHeaders().containsKey("Sec-WebSocket-Extensions")){
request.getHeaders().set("Sec-WebSocket-Extensions", "permessage-deflate");
}
return super.beforeHandshake(request, response, wsHandler, attributes);
}
 
@Override
public void afterHandshake(ServerHttpRequest request,
ServerHttpResponse response, WebSocketHandler wsHandler,
Exception ex) {
logger.info("==============After Handshake===============");
super.afterHandshake(request, response, wsHandler, ex);
}
 
}