flex – 在版本7.0.27之后Tomcat不会进行流式处理吗？

发布时间：2020-12-15 01:44:43 所属栏目：百科来源：网络整理

导读：我发现我的flex应用程序在tomcat版本$subject之后不再起作用了.请帮我解决这个问题.我尝试了许多事情但没有成功. 这是我的配置. Blaze – 4.x Tomcat – 最新消息 – 7.0.32 Java 7 应用程序挂起没有任何错误或任何东西.它从7.0.32再次起作用.我检查了tomcat

我发现我的flex应用程序在tomcat版本$subject之后不再起作用了.请帮我解决这个问题.我尝试了许多事情但没有成功.

这是我的配置.

Blaze – 4.x
Tomcat – 最新消息 – 7.0.32
Java 7

应用程序挂起没有任何错误或任何东西.它从7.0.32再次起作用.我检查了tomcat发行说明(http://tomcat.apache.org/tomcat-7.0-doc/changelog.html)和孤立的问题,直到Coyote jar文件.

当我将Coyote.jar从版本7.0.27替换为7.0.32时,它可以正常工作.

以下是Coyote的变化(http://tomcat.apache.org/tomcat-7.0-doc/changelog.html)

52858: Correct fix for high CPU load (fhanik)
53138: Broken Sendfile on SSL introduced in 7.0.27 (fhanik)
52055: Additional fix required to ensure that InputFilters are recycled between requests. (markt)
53061: Fix a problem in the NIO connector whereby if the poller was under low but consistent load (>1 request/per second and always less than 1 second between requests) timeouts never took place. (markt)
53063: When using an Executor with BIO,use the executor's maxThreads as the default for maxConnections. (markt)
53119: Prevent buffer overflow errors being reported when a client disconnects before the response has been fully written from an AJP connection using the APR/native connector. (markt)
53169: Allow developers to avoid chunked encoding for a response of unknown length by setting the Connection: close header. Based on a patch suggested by Philippe Marschall. (markt)
53173: Properly count down maxConnections (fhanik)
 Update default value of pollerThreadCount for the NIO connector. The new default value will never go above 2 regardless of available processors. (fhanik)
 Allow to retrieve the current connectionCount via getter from the endpoint and as JMX attribute of the ThreadPool mbean. (rjung)
 Correct an edge case where Comet END events were not send to connected clients when the Tomcat connector was stopped. (markt)
53406: Fix possible stack overflow on connection close when using Comet. (fhanik)
 Improve InternalNioInputBuffer.parseHeaders(). (kkolinko)
 Implement maxHeaderCount attribute on Connector. It is equivalent of LimitRequestFields directive of Apache HTTPD. Default value is 100. (kkolinko)

任何猜测/想法都会有所帮助.提前致谢！

解决方法

我认为这可能是问题的原因：

53169: Allow developers to avoid chunked encoding for a response of unknown length by setting the Connection: close header. Based on a patch suggested by Philippe Marschall. (markt)

从BaseStreamingHTTPEndPoint.java中的BlazeDS(4.0.0.14931)代码：

718: res.setHeader("Connection","close");

所以,我写了一个简单的过滤器：

@Override
public void doFilter(ServletRequest request,ServletResponse response,FilterChain chain) throws IOException,ServletException {
    chain.doFilter(request,new HttpServletResponseWrapper(
            (HttpServletResponse) response) {
        public void setHeader(String name,String value) {
            if (!("Connection".equalsIgnoreCase(name) && "Close"
                    .equalsIgnoreCase(value))) {
                super.setHeader(name,value);
            }
        }
    });
}

使用web.xml中的配置：

<filter>
    <filter-name>MessageBrokerHack</filter-name>
    <filter-class>
        com.vivimice.testing.MessageBrokerHack
    </filter-class>
</filter>
<filter-mapping>
    <filter-name>MessageBrokerHack</filter-name>
    <url-pattern>/messagebroker/*</url-pattern>
</filter-mapping>

然后问题解决了.

在AIR客户端(Flex 4.5.1)和Tomcat 6.0.36& 7.0.35

注意：尚未在常规RemoteObject调用上进行测试.

（编辑：李大同）

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