Is there some low limit on maximum number of sockets you can have in the Python-NT's select call? A program that happens to work perfectly on Linux seems to die on NT around 64(?) sockets to the 'too many file descriptors in call' error.
Any portable ways to bypass it?
It turns out that NT has a default 64 fd limit on arguments to select(). The good news is that you can actually bump the limit up to whatever number you want by specifying a define when compiling python15.dll.
If you have the ability to rebuild your python15.dll, you can add the define:
to the preprocessor options for the python15 project to raise the limit to 1024 fds.
The default 64 fd limit is too low for anyone trying to run an async server that handles even a modest load, so I've submitted a bug report to python.org asking that the define above find its way into the next python release...
Brian Lloyd email@example.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com