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We describe two small and portable TCP/IP implementations fulfilling
the subset of RFC1122 requirements needed for full host-to-host
interoperability. Our TCP/IP implementations do not sacrifice any of
TCP's mechanisms such as urgent data or congestion control. They
support IP fragment reassembly and the number of multiple simultaneous
connections is limited only by the available RAM. Despite being small
and simple, our implementations do not require their peers to have
complex, full-size stacks, but can communicate with peers running a
similarly light-weight stack. The code size is on the order of 10
kilobytes and RAM usage can be configured to be as low as a few
hundred bytes.
Adam Dunkels
2003-03-03