I have isolated a problem down to this:
On Windows XP Pro, SP2 if one does an experiment where one tries to open TCP/IP sockets in a loop (bascially, listen port 7000, listen port 7001, etc.)
After approx 649 open sockets, one will start getting errors: No buffer space available (maximum connections reached?)
The question is, what registry settings etc. does one edit to increase the number of listening sockets one can open before receiving this error?