Polkadot: 429 Too many requests

[rootsoklahoma]

During high load, HTTP requests to the node start failing with the error "429 Too many requests: Too many connections. Please try again later." This same error is also displayed in the node's logs (screenshot).
Is there a way to increase the number of simultaneously open connections, similar to using the '--ws-max-connections' flag for websockets?

[bkchr]

Cc @niklasad1

[niklasad1]

No, unfortunately not it's hardcoded on the server running on --rpc-port but it will fixed by paritytech/substrate#13384

More information regarding this can be found here

[arturgontijo]

I faced that issue few days ago and just stopped using the HTTP server in favor of the WS one.

If I understood it right, the WS server supports both protocols...so, if you are using --ws-port=9944 you can set your HTTP client to point to http://localhost:9944 and it should work too.

[niklasad1]

If I understood it right, the WS server supports both protocols...so, if you are using --ws-port=9944 you can set your HTTP client to point to http://localhost:9944 and it should work too.

Yes, that is correct and the max connections will use --ws-max-connections but we have planned to remove all specific HTTP/WS as these apply globally on the RPC server.

[brunopgalvao]

Pinning this here: https://substrate.stackexchange.com/questions/8028/429-too-many-requests

[bkchr]

Closing, please re-open if something is missing.