Comments (5)
Agreed, it's actually on my TODO list. It's pretty hard to "find a random available port" because there's a big race between the time you find the free port and the time the program binds it.
It seems the best way would be to be able to provide a port range to pifpaf that you are sure are available, no matters what.
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I prefer to bind a loopback interface 127.0.0.0/8 (according to the RFC 1700) and always keep the same port. It works on Linux, Windows (loopback adapter) and MacOS
On MacOS you must declare the new loopback interface manually like
sudo ifconfig lo666 alias 127.6.6.6
and to remove it
sudo ifconfig lo666 -alias 127.6.6.6
I use this tips to launch multiple versions of PostgreSQL server with loopback that containt the version number in the loopback address and port 5432 like:
- 127.0.9.3 for PostgreSQL 9.3
- 127.0.9.4 for PostgreSQL 9.4
- 127.0.9.5 for PostgreSQL 9.5
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@kryskool This is a good idea, but it's gonna be tricky if it's not portable out of the box on Darwin :(
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can you not listen on port 0? then ask the program what port it found?
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@jd it might be good to use https://github.com/Yelp/ephemeral-port-reserve/
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Related Issues (20)
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