I bought it and skimmed through most of it, and I have a hard time recommending it personally. It’s really short on the crypto and offers no insight into why TLS behaves the way it does. I would like to at least see an explanation of the TLS handshake process, but there is none. It’s a lot of “using openssl s_client”-type of discussion; i.e. how to use it, not so much on how it works, and that applies to most of the book (including the ocsp parts).
Practical, not necessarily theoretical; but if that’s what you are looking for, then it’s a great book.
> It’s really short on the crypto and offers no insight into why TLS behaves the way it does. ... It’s a lot of “using openssl s_client”-type of discussion;
That is literally how the author explained in his book's Amazon Kindle version's free preview[1]. The author specifically said he is not a brilliant mathematician so he's not going into the details of explaining the math but rather explain the how-to from a practitioner's standpoint. Obviously, you don't need to be a brilliant mathematician in order to under the math behind public-key cryptography but for many engineers, I agree with the author that I care more of about how to configure it and make it work securely rather than the reason behind the scene. The author also claimed that he would recommend some further readings if you would like to dig into it more.
Practical, not necessarily theoretical; but if that’s what you are looking for, then it’s a great book.