Thursday, January 1, 2015

Macintosh Webserver Recap and Restart

lwIP is a lightweight TCP/IP stack that was designed for embedded systems with, or without an Operating System. During RetroChallenge 2014WW, I was able to get MPW 3.5 compiling programs for old Macintosh System versions, port lwIP, and get a TCP/IP stack running on my Macintosh with 512K RAM. For RetroChallenge 2014SC, I was able to update my working version of lwIP and compile the webserver before life interfered.

I woke up this morning without much of a hangover, allowing for an early start on the challenge.

I updated my local copy of the lwIP source which has now incorporated the ppp-new branch into the main branch. It is nice to see continued development on lwIP. This updated ppp code was important because it allowed for ppp without multithreading, which is necessary for the early versions of Macintosh OS. With git installed, two quick commands did the trick: /usr/local/bin/git clone git:// /usr/local/bin/git clone git://

After copying over my additions, and converting the end of line characters to be Mac friendly, I was able to compile it with MPW again.

I fixed the error about the fsdata source file not needed for link. As it turns out, that file is included through one of the header files, and does not need to be compiled separately as a source file.

Finally, I transferred the program to my Macintosh SE for testing (thanks ZIP drive). The PPP and TCP/IP connections come up fairly reliably, but, I couldn't connect to the webpage using Safari.

I Telnetted to port 80:
PowerMac-G4:/Volumes/Mac OS 9/Maclwip151 epooch$ telnet 80 Trying Connected to Escape character is '^]'. GET / HTTP/1.0 404 File not found Server: lwIP/1.3.1 ( Content-type: text/html <html> <head><title>lwIP - A Lightweight TCP/IP Stack</title></head> [...]
And it seems to have worked! I will have to keep testing this evening and look through the code a bit to see why it is not loading with Safari (or FireFox).

I am already further along than RetroChallenge 2014SC!

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