How to add http proxy for apachebench(ab)

Question

I want to grab http packets which ab sends or receives.

So I add a http_proxy in shell command:

$ export http_proxy=127.0.0.1:8888

Then I execute ab command:

$ ab -c 1 -n 1 http://localhost/

Finally, my proxy(127.0.0.1:8888) failed to get http packets from ab.

Is there any way to let ab access http via http_proxy?

Here is my environment: Mac OSX 10.10.3

Answer 1

If you read about ab's help ab -h, you'll find that it supports an proxy option -X:

-X proxy:port   Proxyserver and port number to use

This option is equivalent of curl's -x:

-x, --proxy [PROTOCOL://]HOST[:PORT]  Use proxy on given port

And it leads to this command:

ab -c 1 -n 1 -X 127.0.0.1:8888 http://localhost/