github.com/anthdm/go-ethereum@v1.8.4-0.20180412101906-60516c83b011/node/defaults.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package node
    18  
    19  import (
    20  	"os"
    21  	"os/user"
    22  	"path/filepath"
    23  	"runtime"
    24  
    25  	"github.com/ethereum/go-ethereum/p2p"
    26  	"github.com/ethereum/go-ethereum/p2p/nat"
    27  )
    28  
    29  const (
    30  	DefaultHTTPHost = "localhost" // Default host interface for the HTTP RPC server
    31  	DefaultHTTPPort = 8545        // Default TCP port for the HTTP RPC server
    32  	DefaultWSHost   = "localhost" // Default host interface for the websocket RPC server
    33  	DefaultWSPort   = 8546        // Default TCP port for the websocket RPC server
    34  )
    35  
    36  // DefaultConfig contains reasonable default settings.
    37  var DefaultConfig = Config{
    38  	DataDir:          DefaultDataDir(),
    39  	HTTPPort:         DefaultHTTPPort,
    40  	HTTPModules:      []string{"net", "web3"},
    41  	HTTPVirtualHosts: []string{"localhost"},
    42  	WSPort:           DefaultWSPort,
    43  	WSModules:        []string{"net", "web3"},
    44  	P2P: p2p.Config{
    45  		ListenAddr: ":30303",
    46  		MaxPeers:   25,
    47  		NAT:        nat.Any(),
    48  	},
    49  }
    50  
    51  // DefaultDataDir is the default data directory to use for the databases and other
    52  // persistence requirements.
    53  func DefaultDataDir() string {
    54  	// Try to place the data folder in the user's home dir
    55  	home := homeDir()
    56  	if home != "" {
    57  		if runtime.GOOS == "darwin" {
    58  			return filepath.Join(home, "Library", "Ethereum")
    59  		} else if runtime.GOOS == "windows" {
    60  			return filepath.Join(home, "AppData", "Roaming", "Ethereum")
    61  		} else {
    62  			return filepath.Join(home, ".ethereum")
    63  		}
    64  	}
    65  	// As we cannot guess a stable location, return empty and handle later
    66  	return ""
    67  }
    68  
    69  func homeDir() string {
    70  	if home := os.Getenv("HOME"); home != "" {
    71  		return home
    72  	}
    73  	if usr, err := user.Current(); err == nil {
    74  		return usr.HomeDir
    75  	}
    76  	return ""
    77  }