houqp edited a comment on pull request #9230:
URL: https://github.com/apache/arrow/pull/9230#issuecomment-767732713
```
let addr: SocketAddr = format!("0.0.0.0:{}", port).parse()?;
println!("Server listening on localhost:{}", addr.port());
```
Perhaps `let addr: SocketAddr ` is not actually binding to a socket and
`addr.port()` is returning `0`?
EDIT:
I was able to confirm that it only does the parsing, `addr.port()` returns 0
instead. We need to bind to an actual socket.
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