You forgot the HTTP header... Which is variable size, but unfortunately usually quite large. They can easily be in the 500 to 1000 byte range, taking up most o

You forgot the HTTP header... Which is variable size, but unfortunately usually quite large. They can easily be in the 500 to 1000 byte range, taking up most of the first TCP packet. e.g this HN page has a 741 byte header. I suppose if you control the web server you could feasibly skim this down to the bare minimum for a simple static page - not sure what that would be.