Connection prematurely closed BEFORE response reactor.netty.http.client.PrematureCloseException: Co

旧城等待， 2022-11-05 03:04 7阅读 0赞

##### 一、最近在开发网关系统，就在感觉万事大吉可以上线的时候发现了如下的错误(这个是我在配置rabbitmq访问多个服务时发现的) #####

Connection prematurely closed BEFORE response
    reactor.netty.http.client.PrematureCloseException: Connection prematurely closed BEFORE response
    reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
    Error has been observed at the following site(s):
    	|_ checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain]
    	|_ checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
    	|_ checkpoint ⇢ HTTP GET "/rabbitmq/api/vhosts" [ExceptionHandlingWebHandler]

什么意思呢？就是在请求还未响应的时候连接直接断开了，什么情况，崩溃，但是问题还是要解决于是开始了度娘之路，来看下如下这张图：

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhb21pbmd5YW5n_size_16_color_FFFFFF_t_70]

由上图可知发生异常的原因是从连接池中拿到连接之后发送请求，请求还未到达目标服务器就已经被目标服务器关闭了；而SCG中的连接还未被回收掉；

##### 二、解决方案 #####

第一步添加JVM参数，更改从连接池中取连接的策略，由FIFO变更为LIFO（reactor.netty.resources.ConnectionProvider），确保拿到的连接永远是最新的连接；

-Dreactor.netty.pool.leasingStrategy=lifo

第二步设置连接空闲多久后会被回收掉，这个时间要比对应服务的回收时间小（tomcat对应的是server.tomcat.connection-timeout属性配置，在浏览器中看到的就是keep-Alive）,这样就可以确保SCG回收连接在后端服务之前进行，完美避开这个问题；

spring:
      cloud:
        gateway:
          httpclient:
            pool:
              maxIdleTime: PT1S

GitHub地址：[https://github.com/mingyang66/EmilyGateway/tree/main/doc][https_github.com_mingyang66_EmilyGateway_tree_main_doc]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhb21pbmd5YW5n_size_16_color_FFFFFF_t_70]: /images/20221023/4f4beb18174447009eed60e636a4c0fb.png
[https_github.com_mingyang66_EmilyGateway_tree_main_doc]: https://github.com/mingyang66/EmilyGateway/tree/main/doc

Connection prematurely closed BEFORE response reactor.netty.http.client.PrematureCloseException: Co

发表评论取消回复

还没有评论，来说两句吧...

相关阅读

相关谷歌浏览器扩展程序报错 The message port closed before a response was received.

相关 MQTT: WebSocket connection failed:Connection closed before receiving a handshake response

相关 reactor.netty.http.client.PrematureCloseException: Connection prematurely closed BEFORE response解决方案

相关 Connection prematurely closed BEFORE response reactor.netty.http.client.PrematureCloseException: Co

相关 SQLRecoverableException: Closed Connection

相关 Server Connection Closed Description：The server requested closed the connection before the transacti

相关 epoll_wait() reported that client prematurely closed connection, so upstream connection is closed to

相关 [vue.js]Unchecked runtime.lastError: The message port closed before a response was received

相关 The underlying connection was closed: The connection was closed unexpectedly.

相关 graphite报错：upstream prematurely closed connection while reading response header from upstream