client init error

[Tobeyw]

When I initialized neoClient using neo-go.

        opts := rpcclient.Options{}
	neoClient, err := rpcclient.New(context.TODO(), "http://seed2t5.neo.org:20332", opts)
	if err != nil {
		fmt.Println("NeoN3 client connection failed:", err)
	}

	err = neoClient.Init()
	if err != nil {
		fmt.Println("NeoN3 client init failed:", err)
		os.Exit(1)
	}

	if err = neoClient.Ping(); err != nil {
		fmt.Println("NeoN3 client ping failed:", err)
		os.Exit(1)
	}

the following error occurred
NeoN3 client init failed: failed to get network magic: unexpected hardfork: Cockatrice

As far as I know, neo-node changed yesterday, which may have something to do with this.
https://github.com/neo-project/neo/pull/3222/files#diff-070cf635f0037a2b5b193f6b90475e463c6a41647572a9ffcd42585c159f9bf5

[superboyiii]

Getversion in v3.7.1 testnet

{
    "jsonrpc": "2.0",
    "id": 3,
    "result": {
        "tcpport": 20333,
        "nonce": 1937452412,
        "useragent": "/Neo:3.7.1+1d957922a1aec90d0ec852402dc6eca496841ed4/",
        "rpc": {
            "maxiteratorresultitems": 1000,
            "sessionenabled": true
        },
        "protocol": {
            "addressversion": 53,
            "network": 894710606,
            "validatorscount": 7,
            "msperblock": 15000,
            "maxtraceableblocks": 2102400,
            "maxvaliduntilblockincrement": 5760,
            "maxtransactionsperblock": 5000,
            "memorypoolmaxtransactions": 50000,
            "initialgasdistribution": 5200000000000000,
            "hardforks": [
                {
                    "name": "Aspidochelone",
                    "blockheight": 210000
                },
                {
                    "name": "Basilisk",
                    "blockheight": 2680000
                },
                {
                    "name": "Cockatrice",
                    "blockheight": 3967000
                }
            ]
        }
    }
}

[roman-khimov]

Yup, NeoGo 0.106.0 is not released yet. Likely it'll work if you're to go get github.com/nspcc-dev/neo-go@master, but it's not a stable release yet.

[AnnaShaleva]

Likely it'll work

It will. We'll delver 0.106.0 ASAP, and then you have to upgrade your RPC client version, it should work OK afterwards.

[AnnaShaleva]

@Tobeyw, 0.106.0 is out, please update your RPC client and try it out. I'm closing this issue since new Client version should solve your problem. If not, then feel free to reopen it and comment.