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a9492307d7
This ensures the same local address is used for listening and checking if a given port is free.
Otherwise, `net.listen("tcp", ":$port")` would listen on `0.0.0.0:$port`,
and, on some operating systems like Windows 11, `127.0.0.1:$port` is surprisingly considered as free
(see output below). This, as a consequence, made it impossible to run multiple Dev Sessions on Windows.
```
PS C:\Users\asoro> netstat -aon | grep 2000
TCP 0.0.0.0:20000 0.0.0.0:0 LISTENING 11044
TCP 127.0.0.1:20001 0.0.0.0:0 LISTENING 11044
TCP [::]:20000 [::]:0 LISTENING 11044
TCP [::1]:20000 [::1]:53656 ESTABLISHED 11044
TCP [::1]:53656 [::1]:20000 ESTABLISHED 9984
```
Using the same local address for listening and checking if the port is free would be safer.
If we decide to support passing a custom address, we would use that address instead.