1

For native dapps we can establish an rcp connection over IPC using

conn, err := rpc.NewIPCClient("/home/karalabe/.ethereum/testnet/geth.ipc")

Now what if I want to establish an rpc connection over http i.e.

conn, err := rpc.NewHTTPClient("http://127.0.0.1:8545")

I am unaware whether than methods exists on the rpc package nor was I able to find the documentation for the rpc package. Can anyone provide examples of using HTTP connection over rpc or the full documentation of that struct?

2

As discussed here, I think rpc.NewIPCClient is deprecated and replaced by rpc.Dial("****").
herefore, you can use : client = ethclient.Dial("http://*.*.*.*:8545").

From this example you'll find this snippet code:

  func getBalance(address common.Address) {
    client, err := ethclient.Dial("http://localhost:8545")

    if err != nil {
        fmt.Printf("%v", err)
        os.Exit(1)
    }

    doGetBalance(client, address)
}
  • There's no err if the "localhost:8545" is not open. Error will be available when we use it. I recommend to use the client to check its health – Ellis Feb 9 '18 at 11:20

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