Mapping the OSI model to the TCP/IP stack

I have always had issues with mapping OSI to TCP/IP. This is a nice picture:

OSI TCP Model Comparison

Left is OSI, right is TCP/IP.


My difficulty was mapping the Session from OSI in a http connection. Or is the http protocol a presentation or application layer. According to the following picture, there is no session layer, or it is skipped:




Curious enough, there is nothing in the presentation layer.

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