Indy的TIdHTTPProxyServer：如何过滤请求？ [英] Indy's TIdHTTPProxyServer: How to filter requests?

问题描述

我正在使用TIdHTTPProxyServer来实现简单的HTTP代理，但是现在我想阻止某些连接（如果它们匹配某些URL）。哪个事件和/或组件最适合完成此任务？ Indy文档不是太明确。 ：（

I'm using an TIdHTTPProxyServer to implement a simple HTTP proxy, but I'd like now to block some connections if they match certain URLs. Which event and/or component is best to accomplish that? Indy documentation is not too explicative. :(

谢谢！

推荐答案

作为基本过滤器，您可以使用OnHTTPBeforeCommand事件处理程序（在将命令发送到HTTP服务器之前触发）。

As a basic filter you can use the OnHTTPBeforeCommand event handler (which fires before the command is sent to the HTTP server).

检查Context参数属性，您会发现很有用：

Inspect the Context parameter properties, you'll find useful:

Context.Command
Context.OutboundClient.Host
Context.OutboundClient.Port
Context.Document
Context.Headers

目前我从未尝试过停止PassTrough，但是我敢打赌如果您确定存在阻止规则匹配，则只需在此时提出异常即可。

I never tried to stop the PassTrough at this time, but I bet you can do it by just raising an exception at that point if you determine there's a block rule match.

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