Lots of connections causes Unix.select to fail with EINVAL #66
Description
On OSX we see fatal errors from Lwt_main.run like
proxy: internal error, uncaught exception:
Unix.Unix_error(Unix.EINVAL, "select", "")
Raised by primitive operation at file "src/unix/lwt_engine.ml", line 371, characters 26-60
Called from file "src/unix/lwt_engine.ml", line 312, characters 8-39
Called from file "src/unix/lwt_main.ml", line 41, characters 8-82
This appears to be related to [ocsigen/lwt#222]