Hello group,

I write this message to share a little news about what I was doing in my 
spare time these last two months: porting picoTCP to DOS.

picoTCP is a modern, dual-stack, open-source TCP/IP stack. It has been 
created by the good people at Intelligent Systems (Altran), primarily as 
a stack designed for embedded computing (hence hardware with very 
limited horse power). It is backed by a well established corporation and 
it's actively maintained.

I played with the stack for some times now, and ended up building an 
entire DOS compatibility layer around it. A few patches were required to 
the stack, a few days of development, many hours of debugging - but here 
it is - the first public release of picoTCP for DOS!

http://picotcp4dos.sourceforge.net

The project contains three major parts:

- ipcfg: a little tool that allows to configure networking on your DOS 
machine (IP, DNS, etc). No, it's not a text file - I wanted to avoid the 
complexity of parsing a text file, and opted for a binary configuration 
file that is manipulated via ipcfg. It's much more flexible that a text 
config file, while being much easier/faster to load at runtime.

- ping: no need to explain, I guess... my ping tool for DOS, based on 
picoTCP - crucial when it comes to testing your networking

- an OpenWatcom library package (openwatcom, large memory model) - this 
is for the fellow developers that would like to use the DOS version of 
picoTCP inside their network-enabled, 16-bit DOS programs. I integrated 
a packet driver schim, a DOS-compatible timer, as well as the whole IP 
configuration logic, so it is now a simple (2 functions!) public API 
that allows to load picoTCP, use it, and unload it.


*** Short how-to ***

1. Download picotcp4dos and unzip it on your drive
2. Set the location where the config file will be stored, for example:
SET PICOTCP=C:\PICOTCP.DAT
3. Bind picoTCP to the interrupt vector of your packet driver, example:
ipcfg int 60
4. Configure your IP settings using ipcfg, or use DHCP (ipcfg dhcp)

enjoy!

Mateusz


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