second attempt: empty_port_multi

[dakkar]

now with more documentation

[dakkar]

ok, sometimes I'm an idiot. I had left the "die" in the wrong place. Now the code does what the documentation says.

[JJ]

Any reason why this is still open?

[kazuho]

@dakkar

Calling "empty_port" repeatedly does not guarantee you get different ports each time

How about doing something like:

my $port1 = empty_port();
my $port2 = empty_port($port1 + 1);

[dakkar]

@kazuho sure, that will work, but it's based on an internal implementation detail: nowhere the documentation says you get back the lowest empty port number in the interval requested. Maybe you get the highest one, or a random one… at the very least the implemented behaviour should be documented.

[nponeccop]

Nope that won't work. If $port is free it doesn't mean that $port + 1 is also free.

Few solutions exist though:

• https://metacpan.org/pod/Test::TCP#FAQ (the very first FAQ)
• https://metacpan.org/pod/Test::TCP::Multi

So I vote for closing this PR