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package main
import (
"fmt"
"os"
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"path"
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"github.com/nadoo/conflag"
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"github.com/nadoo/glider/dns"
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"github.com/nadoo/glider/log"
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"github.com/nadoo/glider/rule"
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)
var flag = conflag . New ( )
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// Config is global config struct.
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type Config struct {
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Verbose bool
LogFlags int
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Listens [ ] string
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Forwards [ ] string
Strategy rule . Strategy
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RuleFiles [ ] string
RulesDir string
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DNS string
DNSConfig dns . Config
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rules [ ] * rule . Config
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Services [ ] string
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}
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func parseConfig ( ) * Config {
conf := & Config { }
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flag . SetOutput ( os . Stdout )
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flag . BoolVar ( & conf . Verbose , "verbose" , false , "verbose mode" )
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flag . IntVar ( & conf . LogFlags , "logflags" , 19 , "log flags, do not change it if you do not know what it is, ref: https://pkg.go.dev/log#pkg-constants" )
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flag . StringSliceUniqVar ( & conf . Listens , "listen" , nil , "listen url, format: SCHEME://[USER|METHOD:PASSWORD@][HOST]:PORT?PARAMS" )
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flag . StringSliceUniqVar ( & conf . Forwards , "forward" , nil , "forward url, format: SCHEME://[USER|METHOD:PASSWORD@][HOST]:PORT?PARAMS[,SCHEME://[USER|METHOD:PASSWORD@][HOST]:PORT?PARAMS]" )
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flag . StringVar ( & conf . Strategy . Strategy , "strategy" , "rr" , "forward strategy, default: rr" )
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flag . StringVar ( & conf . Strategy . Check , "check" , "http://www.msftconnecttest.com/connecttest.txt#expect=200" , "check=tcp[://HOST:PORT]: tcp port connect check\ncheck=http://HOST[:PORT][/URI][#expect=STRING_IN_RESP_LINE]\ncheck=file://SCRIPT_PATH: run a check script, healthy when exitcode=0, environment variables: FORWARDER_ADDR\ncheck=disable: disable health check" )
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flag . IntVar ( & conf . Strategy . CheckInterval , "checkinterval" , 30 , "fowarder check interval(seconds)" )
flag . IntVar ( & conf . Strategy . CheckTimeout , "checktimeout" , 10 , "fowarder check timeout(seconds)" )
flag . IntVar ( & conf . Strategy . CheckTolerance , "checktolerance" , 0 , "fowarder check tolerance(ms), switch only when new_latency < old_latency - tolerance, only used in lha mode" )
flag . BoolVar ( & conf . Strategy . CheckDisabledOnly , "checkdisabledonly" , false , "check disabled fowarders only" )
flag . IntVar ( & conf . Strategy . MaxFailures , "maxfailures" , 3 , "max failures to change forwarder status to disabled" )
flag . IntVar ( & conf . Strategy . DialTimeout , "dialtimeout" , 3 , "dial timeout(seconds)" )
flag . IntVar ( & conf . Strategy . RelayTimeout , "relaytimeout" , 0 , "relay timeout(seconds)" )
flag . StringVar ( & conf . Strategy . IntFace , "interface" , "" , "source ip or source interface" )
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flag . StringSliceUniqVar ( & conf . RuleFiles , "rulefile" , nil , "rule file path" )
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flag . StringVar ( & conf . RulesDir , "rules-dir" , "" , "rule file folder" )
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// dns configs
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flag . StringVar ( & conf . DNS , "dns" , "" , "local dns server listen address" )
flag . StringSliceUniqVar ( & conf . DNSConfig . Servers , "dnsserver" , [ ] string { "8.8.8.8:53" } , "remote dns server address" )
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flag . BoolVar ( & conf . DNSConfig . AlwaysTCP , "dnsalwaystcp" , false , "always use tcp to query upstream dns servers no matter there is a forwarder or not" )
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flag . IntVar ( & conf . DNSConfig . Timeout , "dnstimeout" , 3 , "timeout value used in multiple dnsservers switch(seconds)" )
flag . IntVar ( & conf . DNSConfig . MaxTTL , "dnsmaxttl" , 1800 , "maximum TTL value for entries in the CACHE(seconds)" )
flag . IntVar ( & conf . DNSConfig . MinTTL , "dnsminttl" , 0 , "minimum TTL value for entries in the CACHE(seconds)" )
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flag . IntVar ( & conf . DNSConfig . CacheSize , "dnscachesize" , 4096 , "size of CACHE" )
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flag . BoolVar ( & conf . DNSConfig . CacheLog , "dnscachelog" , false , "show query log of dns cache" )
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flag . StringSliceUniqVar ( & conf . DNSConfig . Records , "dnsrecord" , nil , "custom dns record, format: domain/ip" )
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// service configs
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flag . StringSliceUniqVar ( & conf . Services , "service" , nil , "run specified services, format: SERVICE_NAME[,SERVICE_CONFIG]" )
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flag . Usage = usage
err := flag . Parse ( )
if err != nil {
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// flag.Usage()
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fmt . Fprintf ( os . Stderr , "ERROR: %s\n" , err )
os . Exit ( - 1 )
}
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// setup a log func
if conf . Verbose {
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log . SetFlags ( conf . LogFlags )
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log . F = log . Debugf
}
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if len ( conf . Listens ) == 0 && conf . DNS == "" && len ( conf . Services ) == 0 {
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// flag.Usage()
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fmt . Fprintf ( os . Stderr , "ERROR: listen url must be specified.\n" )
os . Exit ( - 1 )
}
// rulefiles
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for _ , ruleFile := range conf . RuleFiles {
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if ! path . IsAbs ( ruleFile ) {
ruleFile = path . Join ( flag . ConfDir ( ) , ruleFile )
}
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rule , err := rule . NewConfFromFile ( ruleFile )
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if err != nil {
log . Fatal ( err )
}
conf . rules = append ( conf . rules , rule )
}
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if conf . RulesDir != "" {
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if ! path . IsAbs ( conf . RulesDir ) {
conf . RulesDir = path . Join ( flag . ConfDir ( ) , conf . RulesDir )
}
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ruleFolderFiles , _ := rule . ListDir ( conf . RulesDir , ".rule" )
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for _ , ruleFile := range ruleFolderFiles {
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rule , err := rule . NewConfFromFile ( ruleFile )
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if err != nil {
log . Fatal ( err )
}
conf . rules = append ( conf . rules , rule )
}
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}
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return conf
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}
func usage ( ) {
app := os . Args [ 0 ]
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w := flag . Output ( )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "%s %s usage:\n" , app , version )
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flag . PrintDefaults ( )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Available schemes:\n" )
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fmt . Fprintf ( w , " listen: mixed ss socks5 http vless trojan trojanc redir redir6 tproxy tcp udp tls ws wss unix smux kcp\n" )
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fmt . Fprintf ( w , " forward: direct reject ss socks4 socks5 http ssr ssh vless vmess trojan trojanc tcp udp tls ws wss unix smux kcp simple-obfs\n" )
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fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Socks5 scheme:\n" )
fmt . Fprintf ( w , " socks://[user:pass@]host:port\n" )
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fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "SS scheme:\n" )
fmt . Fprintf ( w , " ss://method:pass@host:port\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Available methods for ss:\n" )
fmt . Fprintf ( w , " AEAD Ciphers:\n" )
fmt . Fprintf ( w , " AEAD_AES_128_GCM AEAD_AES_192_GCM AEAD_AES_256_GCM AEAD_CHACHA20_POLY1305 AEAD_XCHACHA20_POLY1305\n" )
fmt . Fprintf ( w , " Stream Ciphers:\n" )
fmt . Fprintf ( w , " AES-128-CFB AES-128-CTR AES-192-CFB AES-192-CTR AES-256-CFB AES-256-CTR CHACHA20-IETF XCHACHA20 CHACHA20 RC4-MD5\n" )
fmt . Fprintf ( w , " Alias:\n" )
fmt . Fprintf ( w , " chacha20-ietf-poly1305 = AEAD_CHACHA20_POLY1305, xchacha20-ietf-poly1305 = AEAD_XCHACHA20_POLY1305\n" )
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fmt . Fprintf ( w , " Plain: NONE\n" )
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fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "SSR scheme:\n" )
fmt . Fprintf ( w , " ssr://method:pass@host:port?protocol=xxx&protocol_param=yyy&obfs=zzz&obfs_param=xyz\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "SSH scheme:\n" )
fmt . Fprintf ( w , " ssh://user[:pass]@host:port[?key=keypath]\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "VMess scheme:\n" )
fmt . Fprintf ( w , " vmess://[security:]uuid@host:port?alterID=num\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "VLESS scheme:\n" )
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fmt . Fprintf ( w , " vless://uuid@host:port[?fallback=127.0.0.1:80]\n" )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Trojan client scheme:\n" )
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fmt . Fprintf ( w , " trojan://pass@host:port[?serverName=SERVERNAME][&skipVerify=true]\n" )
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fmt . Fprintf ( w , " trojanc://pass@host:port (cleartext, without TLS)\n" )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Trojan server scheme:\n" )
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fmt . Fprintf ( w , " trojan://pass@host:port?cert=PATH&key=PATH[&fallback=127.0.0.1]\n" )
fmt . Fprintf ( w , " trojanc://pass@host:port[?fallback=127.0.0.1] (cleartext, without TLS)\n" )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Available securities for vmess:\n" )
fmt . Fprintf ( w , " none, aes-128-gcm, chacha20-poly1305\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "TLS client scheme:\n" )
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fmt . Fprintf ( w , " tls://host:port[?serverName=SERVERNAME][&skipVerify=true]\n" )
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fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Proxy over tls client:\n" )
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fmt . Fprintf ( w , " tls://host:port[?skipVerify=true][&serverName=SERVERNAME],scheme://\n" )
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fmt . Fprintf ( w , " tls://host:port[?skipVerify=true],http://[user:pass@]\n" )
fmt . Fprintf ( w , " tls://host:port[?skipVerify=true],socks5://[user:pass@]\n" )
fmt . Fprintf ( w , " tls://host:port[?skipVerify=true],vmess://[security:]uuid@?alterID=num\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "TLS server scheme:\n" )
fmt . Fprintf ( w , " tls://host:port?cert=PATH&key=PATH\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Proxy over tls server:\n" )
fmt . Fprintf ( w , " tls://host:port?cert=PATH&key=PATH,scheme://\n" )
fmt . Fprintf ( w , " tls://host:port?cert=PATH&key=PATH,http://\n" )
fmt . Fprintf ( w , " tls://host:port?cert=PATH&key=PATH,socks5://\n" )
fmt . Fprintf ( w , " tls://host:port?cert=PATH&key=PATH,ss://method:pass@\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Websocket client scheme:\n" )
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fmt . Fprintf ( w , " ws://host:port[/path][?host=HOST][&origin=ORIGIN]\n" )
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fmt . Fprintf ( w , " wss://host:port[/path][?serverName=SERVERNAME][&skipVerify=true][&host=HOST][&origin=ORIGIN]\n" )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Websocket server scheme:\n" )
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fmt . Fprintf ( w , " ws://:port[/path][?host=HOST]\n" )
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fmt . Fprintf ( w , " wss://:port[/path]?cert=PATH&key=PATH[?host=HOST]\n" )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Websocket with a specified proxy protocol:\n" )
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fmt . Fprintf ( w , " ws://host:port[/path][?host=HOST],scheme://\n" )
fmt . Fprintf ( w , " ws://host:port[/path][?host=HOST],http://[user:pass@]\n" )
fmt . Fprintf ( w , " ws://host:port[/path][?host=HOST],socks5://[user:pass@]\n" )
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fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "TLS and Websocket with a specified proxy protocol:\n" )
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fmt . Fprintf ( w , " tls://host:port[?skipVerify=true][&serverName=SERVERNAME],ws://[@/path[?host=HOST]],scheme://\n" )
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fmt . Fprintf ( w , " tls://host:port[?skipVerify=true],ws://[@/path[?host=HOST]],http://[user:pass@]\n" )
fmt . Fprintf ( w , " tls://host:port[?skipVerify=true],ws://[@/path[?host=HOST]],socks5://[user:pass@]\n" )
fmt . Fprintf ( w , " tls://host:port[?skipVerify=true],ws://[@/path[?host=HOST]],vmess://[security:]uuid@?alterID=num\n" )
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fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Unix domain socket scheme:\n" )
fmt . Fprintf ( w , " unix://path\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Smux scheme:\n" )
fmt . Fprintf ( w , " smux://host:port\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "KCP scheme:\n" )
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fmt . Fprintf ( w , " kcp://CRYPT:KEY@host:port[?dataShards=NUM&parityShards=NUM&mode=MODE]\n" )
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fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Available crypt types for KCP:\n" )
fmt . Fprintf ( w , " none, sm4, tea, xor, aes, aes-128, aes-192, blowfish, twofish, cast5, 3des, xtea, salsa20\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Available modes for KCP:\n" )
fmt . Fprintf ( w , " fast, fast2, fast3, normal, default: fast\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Simple-Obfs scheme:\n" )
fmt . Fprintf ( w , " simple-obfs://host:port[?type=TYPE&host=HOST&uri=URI&ua=UA]\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Available types for simple-obfs:\n" )
fmt . Fprintf ( w , " http, tls\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "DNS forwarding server:\n" )
fmt . Fprintf ( w , " dns=:53\n" )
fmt . Fprintf ( w , " dnsserver=8.8.8.8:53\n" )
fmt . Fprintf ( w , " dnsserver=1.1.1.1:53\n" )
fmt . Fprintf ( w , " dnsrecord=www.example.com/1.2.3.4\n" )
fmt . Fprintf ( w , " dnsrecord=www.example.com/2606:2800:220:1:248:1893:25c8:1946\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Available forward strategies:\n" )
fmt . Fprintf ( w , " rr: Round Robin mode\n" )
fmt . Fprintf ( w , " ha: High Availability mode\n" )
fmt . Fprintf ( w , " lha: Latency based High Availability mode\n" )
fmt . Fprintf ( w , " dh: Destination Hashing mode\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Forwarder option scheme: FORWARD_URL#OPTIONS\n" )
fmt . Fprintf ( w , " priority: set the priority of that forwarder, default:0\n" )
fmt . Fprintf ( w , " interface: set local interface or ip address used to connect remote server\n" )
fmt . Fprintf ( w , " -\n" )
fmt . Fprintf ( w , " Examples:\n" )
fmt . Fprintf ( w , " socks5://1.1.1.1:1080#priority=100\n" )
fmt . Fprintf ( w , " vmess://[security:]uuid@host:port?alterID=num#priority=200\n" )
fmt . Fprintf ( w , " vmess://[security:]uuid@host:port?alterID=num#priority=200&interface=192.168.1.99\n" )
fmt . Fprintf ( w , " vmess://[security:]uuid@host:port?alterID=num#priority=200&interface=eth0\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Services:\n" )
fmt . Fprintf ( w , " dhcpd: service=dhcpd,INTERFACE,START_IP,END_IP\n" )
fmt . Fprintf ( w , " e.g.,service=dhcpd,eth1,192.168.50.100,192.168.50.199\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , "Config file format(see `" + app + ".conf.example` as an example):\n" )
fmt . Fprintf ( w , " # COMMENT LINE\n" )
fmt . Fprintf ( w , " KEY=VALUE\n" )
fmt . Fprintf ( w , " KEY=VALUE\n" )
fmt . Fprintf ( w , " # KEY equals to command line flag name: listen forward strategy...\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , "Examples:\n" )
fmt . Fprintf ( w , " " + app + " -config glider.conf\n" )
fmt . Fprintf ( w , " -run glider with specified config file.\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , " " + app + " -listen :8443 -verbose\n" )
fmt . Fprintf ( w , " -listen on :8443, serve as http/socks5 proxy on the same port, in verbose mode.\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , " " + app + " -listen ss://AEAD_AES_128_GCM:pass@:8443 -verbose\n" )
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fmt . Fprintf ( w , " -listen on 0.0.0.0:8443 as a ss server.\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , " " + app + " -listen tls://:443?cert=crtFilePath&key=keyFilePath,http:// -verbose\n" )
fmt . Fprintf ( w , " -listen on :443 as a https(http over tls) proxy server.\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , " " + app + " -listen http://:8080 -forward socks5://127.0.0.1:1080\n" )
fmt . Fprintf ( w , " -listen on :8080 as a http proxy server, forward all requests via socks5 server.\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , " " + app + " -listen socks5://:1080 -forward \"tls://abc.com:443,vmess://security:uuid@?alterID=10\"\n" )
fmt . Fprintf ( w , " -listen on :1080 as a socks5 server, forward all requests via remote tls+vmess server.\n" )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , " " + app + " -listen socks5://:1080 -forward ss://method:pass@server1:port1 -forward ss://method:pass@server2:port2 -strategy rr\n" )
fmt . Fprintf ( w , " -listen on :1080 as socks5 server, forward requests via server1 and server2 in round robin mode.\n" )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , " " + app + " -listen tcp://:80 -forward tcp://2.2.2.2:80\n" )
fmt . Fprintf ( w , " -tcp tunnel: listen on :80 and forward all requests to 2.2.2.2:80.\n" )
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fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , " " + app + " -listen udp://:53 -forward ss://method:pass@1.1.1.1:8443,udp://8.8.8.8:53\n" )
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fmt . Fprintf ( w , " -listen on :53 and forward all udp requests to 8.8.8.8:53 via remote ss server.\n" )
fmt . Fprintf ( w , "\n" )
fmt . Fprintf ( w , " " + app + " -listen socks5://:1080 -listen http://:8080 -forward ss://method:pass@1.1.1.1:8443\n" )
fmt . Fprintf ( w , " -listen on :1080 as socks5 server, :8080 as http proxy server, forward all requests via remote ss server.\n" )
fmt . Fprintf ( w , "\n" )
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fmt . Fprintf ( w , " " + app + " -verbose -listen -dns=:53 -dnsserver=8.8.8.8:53 -forward ss://method:pass@server:port -dnsrecord=www.example.com/1.2.3.4\n" )
fmt . Fprintf ( w , " -listen on :53 as dns server, forward to 8.8.8.8:53 via ss server.\n" )
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fmt . Fprintf ( w , "\n" )
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}
