This book appeared very shortly after Go hit 1.0. It was an invaluable resource at the time. Now, maybe not so much, but thanks to Jan for putting in the work when it was dearly needed by the community.

I can't speak to the rest of the book, which seems like a pretty ambitious effort, but the crypto content needs to be burned out of it with a scorching torch.

This is quite dated considering it says "v1.0, 27 April 2012".

It also is for Go version 1 which explains why some of the packages are no longer available.

We thought the book had some good parts. If you want to see more examples, Russ Whites' blog http://ntwrk.guru/ actually dissects a network protocol stack written in go. He goes fairly deep as the protocols are open sourced and written in go. He mainly focuses on BGP in GO. Fun read. Very insightful.

This is off-top a bit (sorry for that) but does anyone know a good auth framework that plugs into a martini, etc.

I basically am hoping for something written in go that works almost as seamlessly as django auth module (or ROR if you prefer ruby).