That may be, but I've often needed to be familiar with the transport layer and all the quirks of how clients and servers handle connections, latency, etc. Only

That may be, but I've often needed to be familiar with the transport layer and all the quirks of how clients and servers handle connections, latency, etc. Only on those mythical "normal days" do I sit back and trust the abstractions completely, ignoring all of the underlying acrobatics.