通过Apache和Tomcat的WebSockets：AJP协议不支持HTTP升级 [英] WebSockets through Apache and Tomcat: HTTP upgrade is not supported by the AJP protocol

问题描述

我正在使用WebSockets进行开发，并在Tomcat 8上运行了一个可运行的Web应用程序。但是，在前端使用Apache 2进行测试时，客户端将获得HTTP 500，并且Tomcat日志显示：

I am developing with WebSockets, and made a working web application running on Tomcat 8. However, when testing with Apache 2 in front of it, the client is getting an HTTP 500 and the Tomcat log says:

 java.lang.UnsupportedOperationException: HTTP upgrade is not supported by the AJP protocol
    at org.apache.coyote.ajp.AbstractAjpProcessor.action(AbstractAjpProcessor.java:587)
    at org.apache.coyote.Request.action(Request.java:379)
    at org.apache.catalina.connector.Request.upgrade(Request.java:1886)
    at org.apache.catalina.connector.RequestFacade.upgrade(RequestFacade.java:1114)
    at org.apache.tomcat.websocket.server.UpgradeUtil.doUpgrade(UpgradeUtil.java:231)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:77)

当直接通过其HTTP连接器访问Tomcat时，此方法有效。如果AJP不支持此方法，是否有解决方法？

This worked when accessing Tomcat directly through its HTTP connector. If this is not supported with AJP, is there a workaround?

推荐答案

使用Apache模块 mod_proxy_wstunnel ：

Use Apache module mod_proxy_wstunnel:

sudo a2enmod mod_proxy_wstunnel

然后将其添加到 apache.conf ：

ProxyPass "/ws2/"  "ws://localhost:8180/ws"

，并确保已使用< Connector protocol = HTTP / 1.1 port = 8180 ...>在Tomcat中启用了HTTP连接器。 在 server.xml 中。

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