RPCClient without username/password/cookie file

[vdamle]

I'm trying to use the RPC client with a 3rd party node provider such as Quicknode/Getblock etc. which all provide a URL to a testnet/mainnet node without any basic auth credentials.

Ex: https://bright-misty-tudor.btc-testnet.quiknode.pro/<id> / https://go.getblock.io/<id>

Looking at the docs/tracing through the code, one of username/password or cookie auth must be provided, when using the rpcclient:

	connConfig := &rpcclient.ConnConfig{
		Host:         "https://go.getblock.io/<id>",
		User:         "",
		Pass:         "",
		HTTPPostMode: true,
		DisableTLS:   true,
		Params:       "testnet3",
	}

(There's a fs.stat error thrown since cookie path is empty).

Is there a way to use the RPC client to work with 3rd party provider node URLs like the above?

I made sure that these work fine with a curl command like so:

➜  ~ curl --data-binary '{"jsonrpc": "1.0", "id":"curltest", "method": "getblockchaininfo", "params": [] }' -H 'content-type: text/plain;' https://go.getblock.io/<id> | jq
{
  "result": {
    "chain": "test",
    "blocks": 3804026,
    "headers": 3804026,
    "bestblockhash": "0000000009183d42ba2c8ee2385dca2917bde82441721a6bd248c792d7fab237",
    "difficulty": 1,
    "time": 1740113254,
    "mediantime": 1740112044,
    "verificationprogress": 1,
    "initialblockdownload": false,
    "chainwork": "0000000000000000000000000000000000000000000015d22dbb12c20efa0a30",
    "size_on_disk": 178552633275,
    "pruned": false,
    "warnings": "Unknown new rules activated (versionbit 1)"
  },
  "error": null,
  "id": "curltest"
}

[kcalvinalvin]

https endpoint doesn't seem to be supported?

func Test1(t *testing.T) {
        connConfig := &ConnConfig{
                Host:         "https://go.getblock.io/8e276784240a4",
                User:         "",
                Pass:         "",
                HTTPPostMode: true,
                DisableTLS:   true,
                Params:       "testnet3",
        }       
        
        c, err := New(connConfig, nil)
        if err != nil {
                t.Fatal(err)
        }       
        err = c.Connect(1)
        if err != nil {
                t.Fatal(err)
        }       
}

Results in

--- FAIL: Test1 (0.00s)
    hi_test.go:19: unsupported protocol in address: https://go.getblock.io/8e2767842
FAIL
exit status 1

[vdamle]

Strange that I don't hit that error -- I was under the impression that Connect() is only required for websocket connections and does not apply when HTTPPostMode: true -- example http post mode client

If using Connect() after setting HTTPPostMode: true, I see the error

bitcoin-tx/tx_test.go:34: client is not configured for websockets