Network server library to handle over 10,000 connections. Since GHC 6.10.4 or earlier uses select(), it cannot handle connections over 1,024. This library uses the prefork technique to get over the barrier. Programs complied by GHC 6.10.4 or earlier with the -threaded option kill the IO thread when forkProcess is used. So, don't specify the -threaded option to use this library.