使用代理重复TCP流量 [英] Duplicate TCP traffic with a proxy

问题描述

我需要从一台机器（端口）和两台不同的机器（端口）发送（重复）流量。我还需要照顾TCP会话。

I need to send (duplicate) traffic from one machine (port) and to two different machines (ports). I need to take care of TCP session as well.

在beginnig中，我使用了 em-proxy ，但在我看来，开销相当大（超过cpu的50％）。
然后我安装了 haproxy ，我设法重定向流量（不重复）。开销是合理的（小于5％）。

In the beginnig I used em-proxy, but it seems to me that the overhead is quite large (it goes over 50% of cpu). Then I installed haproxy and I managed to redirect traffic (not to duplicate). The overhead is reasonable (less than 5%).

问题是我在haproxy配置文件中不能说如下：

- listen在具体的地址：端口和任何你发现发送在两个不同的
机器：端口，并丢弃其中一个答案。

The problem is that I could not say in haproxy config file the following:
- listen on specific address:port and whatever you find send on the two different machines:ports and discard the answers from one of them.

Em代理代码这很简单，但在我看来，EventMachine生成
a很多开销。

Em-proxy code for this is quite simple, but it seems to me that EventMachine generates a lot of overhead.

在我挖掘haproxy代码并尝试更改（重复流量）之前，我想要
知道有什么类似的东西吗？

Before I dig in haproxy code and try to change (duplicate traffic) I would like to know is there something similar out there?

谢谢。

推荐答案

我已经为此创建了一个代理。

I have created a proxy just for this purpose.

https://github.com/chrislusf/teeproxy

用法

./teeProxy -l :8888 -a localhost:9000 -b localhost:9001

tee-proxy是一个反向代理。对于每个传入请求，它将请求克隆为2，然后将其转发到2个服务器。服务器 a 的结果照常返回，但服务器 b 的结果将被忽略。

tee-proxy is a reverse proxy. For each incoming request, it clones the request into 2 and then forwards them to 2 servers. The results from server a is returned as usual, but the results from server b is ignored.

tee-proxy处理 GET ， POST 和其他HTTP方法。

tee-proxy handles both GET, POST, and other HTTP methods.

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