>From your description of running the test with nmake I find it reasonable to >assume you are testing on windows. Winsock seems to have a 1 second delay for >“connection refused” errors which is triggered (2000 times) by a test added >with PR 227: https://github.com/perl6/roast/pull/227. I saw some >documentation of the delay on msdn >(https://social.msdn.microsoft.com/Forums/sqlserver/en-US/9b90b65c-4630-46b1-98f1-5d4d22427962/delayed-connection-refused-error?forum=netfxnetcom > ) and is demonstrated by a small Perl 5 script below. The problem also >effects roast on WSL (windows subsystem for linux).
# test below runs in about 10 seconds on windows/WSL # and instantly on linux use Socket; # This defines PF_INET and SOCK_STREAM for (1..10) { socket my $socket,PF_INET,SOCK_STREAM,(getprotobyname('tcp'))[2]; connect $socket, sockaddr_in(1, inet_aton('127.0.0.1')) or $! =~ /\bconnection\b.*\brefused\b/i or die "can't connect: $!\n"; close($socket); }