@Matt Lehman We looked into using 0MQ for a bit for agent IPC for a different project. One frustrating limitation is no named pipe support on Windows. And no Go support without cgo.

I didn’t realize the windows named pipe piece. That stinks. Seems like there is some beta pure Go stuff here: https://github.com/zeromq/gomq/blob/master/README.md

Yeah, you can do local TCP, but you can't add security descriptors to it, which may or may not matter, depending on your scenario. Means another low-priv process could mess with you.