56 lines
1.8 KiB
Go
56 lines
1.8 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package utils
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import (
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"fmt"
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"strings"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/rpc"
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"gopkg.in/urfave/cli.v1"
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)
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// NewRemoteRPCClient returns a RPC client which connects to a running geth instance.
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// Depending on the given context this can either be a IPC or a HTTP client.
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func NewRemoteRPCClient(ctx *cli.Context) (rpc.Client, error) {
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if ctx.Args().Present() {
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endpoint := ctx.Args().First()
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return NewRemoteRPCClientFromString(endpoint)
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}
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// use IPC by default
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return rpc.NewIPCClient(node.DefaultIPCEndpoint())
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}
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// NewRemoteRPCClientFromString returns a RPC client which connects to the given
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// endpoint. It must start with either `ipc:` or `rpc:` (HTTP).
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func NewRemoteRPCClientFromString(endpoint string) (rpc.Client, error) {
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if strings.HasPrefix(endpoint, "ipc:") {
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return rpc.NewIPCClient(endpoint[4:])
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}
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if strings.HasPrefix(endpoint, "rpc:") {
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return rpc.NewHTTPClient(endpoint[4:])
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}
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if strings.HasPrefix(endpoint, "http://") {
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return rpc.NewHTTPClient(endpoint)
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}
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if strings.HasPrefix(endpoint, "ws:") {
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return rpc.NewWSClient(endpoint)
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}
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return nil, fmt.Errorf("invalid endpoint")
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}
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