[TimWolla]

For me it's the superior HTTP / header rewriting capabilities. With nginx you are more or less restricted to just adding headers the last time I looked into it.

Disclosure: I'm a community contributor to HAProxy and I help maintain the issue tracker on GitHub.

[mooreds]

Looks like you have to add in a non core module:

https://github.com/openresty/headers-more-nginx-module#readm...