fix: cannot parse binance ws endopint like wss://dstream.binance.com/…

[GhostLee]

let url = Url::parse("wss://dstream.binance.com/stream").unwrap();
assert!(url.port() == None);

Binance endpoint cannot be parsed, it should use port_or_known_default to set default port value.

[pan93412]

@soulmachine Maybe we shouldn't enforce a PR to pass Cargo test? I saw a lot of Operation timed out, and seems like GitHub Actions is not stable for sending a request.

[soulmachine]

Thanks for the bugfix!

Yeah, some tests are failing, so I skipped them and merged your PR.