gitlab.com/lightnet1/evrynet-node@v1.1.0/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 "gitlab.com/lightnet1/evrynet-node/p2p" 26 "gitlab.com/lightnet1/evrynet-node/p2p/nat" 27 "gitlab.com/lightnet1/evrynet-node/rpc" 28 ) 29 30 const ( 31 DefaultHTTPHost = "localhost" // Default host interface for the HTTP RPC server 32 DefaultHTTPPort = 8545 // Default TCP port for the HTTP RPC server 33 DefaultWSHost = "localhost" // Default host interface for the websocket RPC server 34 DefaultWSPort = 8546 // Default TCP port for the websocket RPC server 35 DefaultGraphQLHost = "localhost" // Default host interface for the GraphQL server 36 DefaultGraphQLPort = 8547 // Default TCP port for the GraphQL server 37 ) 38 39 // DefaultConfig contains reasonable default settings. 40 var DefaultConfig = Config{ 41 DataDir: DefaultDataDir(), 42 HTTPPort: DefaultHTTPPort, 43 HTTPModules: []string{"net", "web3"}, 44 HTTPVirtualHosts: []string{"localhost"}, 45 HTTPTimeouts: rpc.DefaultHTTPTimeouts, 46 WSPort: DefaultWSPort, 47 WSModules: []string{"net", "web3"}, 48 P2P: p2p.Config{ 49 ListenAddr: ":30303", 50 MaxPeers: 50, 51 NAT: nat.Any(), 52 }, 53 } 54 55 // DefaultDataDir is the default data directory to use for the databases and other 56 // persistence requirements. 57 func DefaultDataDir() string { 58 // Try to place the data folder in the user's home dir 59 home := homeDir() 60 if home != "" { 61 switch runtime.GOOS { 62 case "darwin": 63 return filepath.Join(home, "Library", "Evrynet") 64 case "windows": 65 // We used to put everything in %HOME%\AppData\Roaming, but this caused 66 // problems with non-typical setups. If this fallback location exists and 67 // is non-empty, use it, otherwise DTRT and check %LOCALAPPDATA%. 68 fallback := filepath.Join(home, "AppData", "Roaming", "Evrynet") 69 appdata := windowsAppData() 70 if appdata == "" || isNonEmptyDir(fallback) { 71 return fallback 72 } 73 return filepath.Join(appdata, "Evrynet") 74 default: 75 return filepath.Join(home, ".ethereum") 76 } 77 } 78 // As we cannot guess a stable location, return empty and handle later 79 return "" 80 } 81 82 func windowsAppData() string { 83 v := os.Getenv("LOCALAPPDATA") 84 if v == "" { 85 // Windows XP and below don't have LocalAppData. Crash here because 86 // we don't support Windows XP and undefining the variable will cause 87 // other issues. 88 panic("environment variable LocalAppData is undefined") 89 } 90 return v 91 } 92 93 func isNonEmptyDir(dir string) bool { 94 f, err := os.Open(dir) 95 if err != nil { 96 return false 97 } 98 names, _ := f.Readdir(1) 99 f.Close() 100 return len(names) > 0 101 } 102 103 func homeDir() string { 104 if home := os.Getenv("HOME"); home != "" { 105 return home 106 } 107 if usr, err := user.Current(); err == nil { 108 return usr.HomeDir 109 } 110 return "" 111 }