WS to HTTP redirection doesn't seem to be handle correctly

[paulormart]

@paulormart

please open an issue in jsonrpsee but the issue is that you got a HTTP redirection there... to a HTTP endpoint

target: Target { sockaddrs: [104.26.8.125:80, 104.26.9.125:80, 172.67.71.26:80, [2606:4700:20::681a:97d]:80, [2606:4700:20::ac43:471a]:80, [2606:4700:20::681a:87d]:80], host: "rpc.polkadot.io", host_header: "rpc.polkadot.io:80", _mode: Plain, path_and_query: "/" }
2022-01-05T15:32:34.132404Z DEBUG jsonrpsee_client_transport::ws: Connecting to target: Target { sockaddrs: [104.26.8.125:80, 104.26.9.125:80, 172.67.71.26:80, [2606:4700:20::681a:97d]:80, [2606:4700:20::ac43:471a]:80, [2606:4700:20::681a:87d]:80], host: "rpc.polkadot.io", host_header: "rpc.polkadot.io:80", _mode: Plain, path_and_query: "/" }
2022-01-05T15:32:34.266608Z DEBUG jsonrpsee_client_transport::ws: Redirection: status_code: 301, location: https://rpc.polkadot.io/
thread 'main' panicked at 'Some("https")', client/transport/src/ws/mod.rs:440:17

Thus, meanwhile use wss://rpc.polkadot.io:443 if that's alright for you.

Originally posted by @niklasad1 in paritytech/subxt#384 (comment)

[paulormart]

Thanks for reviewing this @niklasad1

If wss://rpc.polkadot.io:443 is used from the subxt side we get this error Error: Rpc(Transport(Invalid URL: URL scheme not supported, expects 'ws'))

[paulormart]

Ok got it. client-ws-transport feature was missing from the client library.

Cargo file should specify it like jsonrpsee = { version = "0.7.0", features = ["macros", "ws-client", "http-client", "client-ws-transport"] }

[niklasad1]

The redirection is still an issue but I don't think there is anything we can do besides print a better error message in the ws client.

Ok got it. client-ws-transport feature was missing from the client library.

good catch, it's a bug the ws-client crate should expose that feature but you can solve it like that too :)