Plackup does not support setting port to 0

[frioux]

I would like to have plackup get a port from the kernel that is ensured to be open. The correct way to do this is to set the port to 0 and the kernel will assign a free port to the socket. If you tell plackup to use port 0 (or listen 0:0) it will just use one of the predefined ports, instead of letting the kernel choose.

I suspect that the fix for this involves checking definedness instead of truthiness on the value you get back, but I'm not sure.

[miyagawa]

plackup does seem to support --listen 0:0 and then individual servers might default to other ports if they do not support automatic allocation of the port. (HTTP::Server::PSGI, the default backend, seems to default to 8080 then)

[frioux]

Ok, so I'd say then that this bug is on HTTP::Server::PSGI

[miyagawa]

I don't consider it a bug it's a feature request :)

[frioux]

Ah sure, wasn't really trying to make that distinction