where can I get the short intro on networking that's floating

[mlevin at jade.tufts.edu]

    I once saw a short intro to TCP networking (sockets, etc. for BSD
systems) that someone wrote (I think someone from MIT). I believe it
was on uunet.uu.net as FTPable.  Can someone send it to me or tell me
where I can get it (I don't remember the name)? If you know, please
send the info to "mlevin at jade.tufts.edu".
   The reason I want it is that the person who wrote it offered to
help with problems. I have a problem with out-of-band data, and no one
on comp.unix.programmer wanted to help me! so I thought I'd ask this
person directly.  However, if anyone else out there knows how to send
in-band out-of-band data on a TCP socket (using ioctls, etc.) and
would be willing to help me, please write me at mlevin at jade.tufts.edu.
I have a short program fragment that almost works (except that it
inserts an extra null byte in the middle of my out-of-band message)
and I need someone who's used OOB data before. Thanks in advance.

Mike Levin