Is it possible to set HTTP proxy settings?

[Deleted user]

I'm specifically looking to make a websocket connection through a proxy server.

[techilla]

I would also like to use this. I have a Loadbalancer in front of two Tomcats where a Java servlet should handle the POSTs send by logstash http output. Because I am in a private network I get HTTP state 504 resonses. My host told me that http_proxy setting is required which I already set in /etc/sysconfig/logstash as well as via "export" into the env.

Any help about how to get this run would be very, very appreciated.