springclould nginx转发 websocket400报错问题

之前一直找原因一直围绕着nginx转发的问题

说头信息没设置全

然后nginx配置文件上加了这些

#http块加以下几行：
map $http_upgrade $connection_upgrade {

        default upgrade;

        '' close;

    }

#sever块加以下几行：

location / {

                proxy_pass http://localhost:8001;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection "upgrade";
        }

配置完发现还是没有效果，

最后发现自己项目用的是微服务spingCloud

还得在ZUUL网关配置一个websocket过滤器

package com.power.bos.filter;

import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;

@Component
public class WebSocketFilter extends ZuulFilter {
    @Override
    public String filterType() {
        return "pre";
    }

    @Override
    public int filterOrder() {
        return 4;
    }

    @Override
    public boolean shouldFilter() {
        return true;
    }

    @Override
    public Object run() {
        RequestContext context = RequestContext.getCurrentContext();
        HttpServletRequest request = context.getRequest();
        String upgradeHeader = request.getHeader("Upgrade");
        context.getResponse().setHeader("X-Frame-Options", "SAMEORIGIN");
        if (null == upgradeHeader) {
            upgradeHeader = request.getHeader("upgrade");
        }
        if (null != upgradeHeader && "websocket".equalsIgnoreCase(upgradeHeader)) {
            context.addZuulRequestHeader("connection", "Upgrade");
//            context.addZuulRequestHeader("X-Frame-Options", "SAMEORIGIN");
        }
        return null;
    }
}

就解决了上图的两个问题了

红色那块是针对第二个报错的

最后解决

2018.7.9

　　后来发现这种方式还是不好，连接有延迟，要等个几秒才连接成功，这样严重影响用户体验，后来还是弃用了