ElWhip: Featuring lwIP - A Lightweight TCP/IP Stack

The web page you are viewing is being served on an original Macintosh with 512K RAM. This is the first known TCP/IP stack running on a Macintosh with the original 64K ROMs. This is made possible by the lightweight TCP/IP stack lwIP.

lwIP is an open source implementation of the TCP/IP protocol suite that was originally written by Adam Dunkels of the Swedish Institute of Computer Science but now is being actively developed by a team of developers distributed world-wide. Since it's release, lwIP has spurred a lot of interest and has been ported to several platforms and operating systems. lwIP can be used either with or without an underlying OS.

The focus of the lwIP TCP/IP implementation is to reduce the RAM usage while still having a full scale TCP. This makes lwIP suitable for use in embedded systems with tens of kilobytes of free RAM and room for around 40 kilobytes of code ROM.

More information about lwIP can be found at the lwIP homepage at http://savannah.nongnu.org/projects/lwip/ or at the lwIP wiki at http://lwip.wikia.com/.