[6lowapp] Where does TCP not work

[Cullen Jennings <[e-mail]>]

Multiple people have told me that TCP won't work on some of the types  
of networks we want to run on. Anyway I'd like to understand a bit  
more on why this is.

I could go dig a 9600 baud modem out of my closet, set the MTU at 100,  
and emulate 10% packet loss on server side and go try some things. I'm  
relatively confidently TCP, HTTP, pop, imap, SSH, and TLS will all  
work just fine.

So, what are the network conditions that we think are going to cause a  
problem for TCP? and, what might one do to make something that worked  
better than TCP in these cases.

Thanks, Cullen