Run all Go HTTP requests through a proxy?

Is it possible to run all the HTTP requests from my program through something like proxymesh.com? I've looked around but I haven't been able to find anything.

Yep, set the HTTP_PROXY environment variable.

https://golang.org/pkg/net/http/#Transport

https://golang.org/pkg/net/http/#ProxyURL

https://godoc.org/golang.org/x/net/proxy#SOCKS5