How to set httpjson client with a proxy

[jinj]

I use the sdk to send json query. My program must use proxy to send the query to remote rpc node. My code looks like this:

var myClient *http.HTTP
myClient, err = client.NewClientFromNode(host)

But I dont' find api to set proxy, something like: myClinet.SetProxy(...).

Can someone advise?

Thanks!