539 lines
14 KiB
Go
539 lines
14 KiB
Go
package main
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import (
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"crypto/sha256"
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"crypto/tls"
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"flag"
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"fmt"
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"net"
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"net/http"
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_ "net/http/pprof"
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"os"
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"runtime"
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"time"
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"github.com/ginuerzh/gost"
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"github.com/go-log/log"
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)
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var (
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options route
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routes []route
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)
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func init() {
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gost.SetLogger(&gost.LogLogger{})
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var (
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configureFile string
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printVersion bool
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)
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flag.Var(&options.ChainNodes, "F", "forward address, can make a forward chain")
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flag.Var(&options.ServeNodes, "L", "listen address, can listen on multiple ports")
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flag.StringVar(&configureFile, "C", "", "configure file")
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flag.BoolVar(&options.Debug, "D", false, "enable debug log")
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flag.BoolVar(&printVersion, "V", false, "print version")
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flag.Parse()
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if printVersion {
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fmt.Fprintf(os.Stderr, "gost %s (%s)\n", gost.Version, runtime.Version())
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os.Exit(0)
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}
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if len(options.ServeNodes) > 0 {
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routes = append(routes, options)
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}
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gost.Debug = options.Debug
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if err := loadConfigureFile(configureFile); err != nil {
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log.Log(err)
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os.Exit(1)
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}
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if flag.NFlag() == 0 || len(routes) == 0 {
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flag.PrintDefaults()
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os.Exit(0)
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}
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}
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func main() {
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go func() {
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log.Log(http.ListenAndServe("localhost:6060", nil))
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}()
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// NOTE: as of 2.6, you can use custom cert/key files to initialize the default certificate.
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config, err := tlsConfig(defaultCertFile, defaultKeyFile)
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if err != nil {
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// generate random self-signed certificate.
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cert, err := gost.GenCertificate()
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if err != nil {
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log.Log(err)
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os.Exit(1)
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}
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config = &tls.Config{
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Certificates: []tls.Certificate{cert},
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}
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}
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gost.DefaultTLSConfig = config
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for _, route := range routes {
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if err := route.serve(); err != nil {
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log.Log(err)
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os.Exit(1)
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}
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}
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select {}
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}
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type route struct {
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ChainNodes, ServeNodes stringList
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Retries int
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Debug bool
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}
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func (r *route) initChain() (*gost.Chain, error) {
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chain := gost.NewChain()
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chain.Retries = r.Retries
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if chain.Retries == 0 {
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chain.Retries = 1
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}
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gid := 1 // group ID
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for _, ns := range r.ChainNodes {
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ngroup := gost.NewNodeGroup()
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ngroup.ID = gid
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gid++
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// parse the base node
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nodes, err := parseChainNode(ns)
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if err != nil {
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return nil, err
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}
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nid := 1 // node ID
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for i := range nodes {
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nodes[i].ID = nid
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nid++
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}
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ngroup.AddNode(nodes...)
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// parse peer nodes if exists
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peerCfg, err := loadPeerConfig(nodes[0].Get("peer"))
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if err != nil {
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log.Log(err)
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}
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peerCfg.Validate()
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strategy := peerCfg.Strategy
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// overwrite the strategry in the peer config if `strategy` param exists.
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if s := nodes[0].Get("strategy"); s != "" {
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strategy = s
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}
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ngroup.Options = append(ngroup.Options,
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gost.WithFilter(&gost.FailFilter{
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MaxFails: peerCfg.MaxFails,
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FailTimeout: time.Duration(peerCfg.FailTimeout) * time.Second,
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}),
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gost.WithStrategy(parseStrategy(strategy)),
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)
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for _, s := range peerCfg.Nodes {
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nodes, err = parseChainNode(s)
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if err != nil {
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return nil, err
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}
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for i := range nodes {
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nodes[i].ID = nid
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nid++
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}
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ngroup.AddNode(nodes...)
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}
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var bypass *gost.Bypass
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// global bypass
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if peerCfg.Bypass != nil {
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bypass = gost.NewBypassPatterns(peerCfg.Bypass.Patterns, peerCfg.Bypass.Reverse)
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}
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nodes = ngroup.Nodes()
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for i := range nodes {
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if nodes[i].Bypass == nil {
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nodes[i].Bypass = bypass // use global bypass if local bypass does not exist.
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}
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}
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chain.AddNodeGroup(ngroup)
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}
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return chain, nil
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}
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func parseChainNode(ns string) (nodes []gost.Node, err error) {
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node, err := gost.ParseNode(ns)
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if err != nil {
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return
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}
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users, err := parseUsers(node.Get("secrets"))
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if err != nil {
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return
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}
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if node.User == nil && len(users) > 0 {
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node.User = users[0]
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}
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serverName, sport, _ := net.SplitHostPort(node.Addr)
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if serverName == "" {
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serverName = "localhost" // default server name
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}
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rootCAs, err := loadCA(node.Get("ca"))
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if err != nil {
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return
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}
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tlsCfg := &tls.Config{
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ServerName: serverName,
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InsecureSkipVerify: !node.GetBool("secure"),
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RootCAs: rootCAs,
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}
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wsOpts := &gost.WSOptions{}
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wsOpts.EnableCompression = node.GetBool("compression")
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wsOpts.ReadBufferSize = node.GetInt("rbuf")
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wsOpts.WriteBufferSize = node.GetInt("wbuf")
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wsOpts.UserAgent = node.Get("agent")
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var tr gost.Transporter
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switch node.Transport {
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case "tls":
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tr = gost.TLSTransporter()
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case "mtls":
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tr = gost.MTLSTransporter()
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case "ws":
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tr = gost.WSTransporter(wsOpts)
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case "mws":
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tr = gost.MWSTransporter(wsOpts)
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case "wss":
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tr = gost.WSSTransporter(wsOpts)
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case "mwss":
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tr = gost.MWSSTransporter(wsOpts)
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case "kcp":
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/*
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if !chain.IsEmpty() {
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return nil, errors.New("KCP must be the first node in the proxy chain")
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}
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*/
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config, err := parseKCPConfig(node.Get("c"))
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if err != nil {
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return nil, err
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}
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tr = gost.KCPTransporter(config)
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case "ssh":
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if node.Protocol == "direct" || node.Protocol == "remote" {
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tr = gost.SSHForwardTransporter()
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} else {
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tr = gost.SSHTunnelTransporter()
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}
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case "quic":
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/*
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if !chain.IsEmpty() {
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return nil, errors.New("QUIC must be the first node in the proxy chain")
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}
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*/
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config := &gost.QUICConfig{
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TLSConfig: tlsCfg,
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KeepAlive: node.GetBool("keepalive"),
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}
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config.Timeout = time.Duration(node.GetInt("timeout")) * time.Second
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config.IdleTimeout = time.Duration(node.GetInt("idle")) * time.Second
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if key := node.Get("key"); key != "" {
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sum := sha256.Sum256([]byte(key))
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config.Key = sum[:]
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}
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tr = gost.QUICTransporter(config)
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case "http2":
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tr = gost.HTTP2Transporter(tlsCfg)
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case "h2":
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tr = gost.H2Transporter(tlsCfg)
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case "h2c":
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tr = gost.H2CTransporter()
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case "obfs4":
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if err := gost.Obfs4Init(node, false); err != nil {
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return nil, err
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}
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tr = gost.Obfs4Transporter()
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case "ohttp":
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tr = gost.ObfsHTTPTransporter()
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default:
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tr = gost.TCPTransporter()
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}
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var connector gost.Connector
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switch node.Protocol {
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case "http2":
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connector = gost.HTTP2Connector(node.User)
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case "socks", "socks5":
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connector = gost.SOCKS5Connector(node.User)
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case "socks4":
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connector = gost.SOCKS4Connector()
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case "socks4a":
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connector = gost.SOCKS4AConnector()
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case "ss":
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connector = gost.ShadowConnector(node.User)
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case "direct":
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connector = gost.SSHDirectForwardConnector()
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case "remote":
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connector = gost.SSHRemoteForwardConnector()
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case "forward":
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connector = gost.ForwardConnector()
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case "sni":
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connector = gost.SNIConnector(node.Get("host"))
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case "http":
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fallthrough
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default:
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node.Protocol = "http" // default protocol is HTTP
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connector = gost.HTTPConnector(node.User)
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}
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timeout := node.GetInt("timeout")
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node.DialOptions = append(node.DialOptions,
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gost.TimeoutDialOption(time.Duration(timeout)*time.Second),
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)
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handshakeOptions := []gost.HandshakeOption{
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gost.AddrHandshakeOption(node.Addr),
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gost.HostHandshakeOption(node.Host),
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gost.UserHandshakeOption(node.User),
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gost.TLSConfigHandshakeOption(tlsCfg),
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gost.IntervalHandshakeOption(time.Duration(node.GetInt("ping")) * time.Second),
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gost.TimeoutHandshakeOption(time.Duration(timeout) * time.Second),
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gost.RetryHandshakeOption(node.GetInt("retry")),
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}
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node.Client = &gost.Client{
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Connector: connector,
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Transporter: tr,
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}
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node.Bypass = parseBypass(node.Get("bypass"))
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ips := parseIP(node.Get("ip"), sport)
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for _, ip := range ips {
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node.Addr = ip
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// override the default node address
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node.HandshakeOptions = append(handshakeOptions, gost.AddrHandshakeOption(ip))
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// One node per IP
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nodes = append(nodes, node)
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}
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if len(ips) == 0 {
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node.HandshakeOptions = handshakeOptions
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nodes = []gost.Node{node}
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}
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return
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}
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func (r *route) serve() error {
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baseChain, err := r.initChain()
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if err != nil {
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return err
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}
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for _, ns := range r.ServeNodes {
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chain := &gost.Chain{}
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*chain = *baseChain
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node, err := gost.ParseNode(ns)
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if err != nil {
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return err
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}
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users, err := parseUsers(node.Get("secrets"))
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if err != nil {
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return err
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}
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if node.User != nil {
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users = append(users, node.User)
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}
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certFile, keyFile := node.Get("cert"), node.Get("key")
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tlsCfg, err := tlsConfig(certFile, keyFile)
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if err != nil && certFile != "" && keyFile != "" {
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return err
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}
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wsOpts := &gost.WSOptions{}
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wsOpts.EnableCompression = node.GetBool("compression")
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wsOpts.ReadBufferSize = node.GetInt("rbuf")
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wsOpts.WriteBufferSize = node.GetInt("wbuf")
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var ln gost.Listener
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switch node.Transport {
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case "tls":
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ln, err = gost.TLSListener(node.Addr, tlsCfg)
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case "mtls":
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ln, err = gost.MTLSListener(node.Addr, tlsCfg)
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case "ws":
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wsOpts.WriteBufferSize = node.GetInt("wbuf")
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ln, err = gost.WSListener(node.Addr, wsOpts)
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case "mws":
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ln, err = gost.MWSListener(node.Addr, wsOpts)
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case "wss":
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ln, err = gost.WSSListener(node.Addr, tlsCfg, wsOpts)
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case "mwss":
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ln, err = gost.MWSSListener(node.Addr, tlsCfg, wsOpts)
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case "kcp":
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config, er := parseKCPConfig(node.Get("c"))
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if er != nil {
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return er
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}
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ln, err = gost.KCPListener(node.Addr, config)
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case "ssh":
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config := &gost.SSHConfig{
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Users: users,
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TLSConfig: tlsCfg,
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}
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if node.Protocol == "forward" {
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ln, err = gost.TCPListener(node.Addr)
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} else {
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ln, err = gost.SSHTunnelListener(node.Addr, config)
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}
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case "quic":
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config := &gost.QUICConfig{
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TLSConfig: tlsCfg,
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KeepAlive: node.GetBool("keepalive"),
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}
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config.Timeout = time.Duration(node.GetInt("timeout")) * time.Second
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config.IdleTimeout = time.Duration(node.GetInt("idle")) * time.Second
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if key := node.Get("key"); key != "" {
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sum := sha256.Sum256([]byte(key))
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config.Key = sum[:]
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}
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ln, err = gost.QUICListener(node.Addr, config)
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case "http2":
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ln, err = gost.HTTP2Listener(node.Addr, tlsCfg)
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case "h2":
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ln, err = gost.H2Listener(node.Addr, tlsCfg)
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case "h2c":
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ln, err = gost.H2CListener(node.Addr)
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case "tcp":
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// Directly use SSH port forwarding if the last chain node is forward+ssh
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if chain.LastNode().Protocol == "forward" && chain.LastNode().Transport == "ssh" {
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chain.Nodes()[len(chain.Nodes())-1].Client.Connector = gost.SSHDirectForwardConnector()
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chain.Nodes()[len(chain.Nodes())-1].Client.Transporter = gost.SSHForwardTransporter()
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}
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ln, err = gost.TCPListener(node.Addr)
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case "rtcp":
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// Directly use SSH port forwarding if the last chain node is forward+ssh
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if chain.LastNode().Protocol == "forward" && chain.LastNode().Transport == "ssh" {
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chain.Nodes()[len(chain.Nodes())-1].Client.Connector = gost.SSHRemoteForwardConnector()
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chain.Nodes()[len(chain.Nodes())-1].Client.Transporter = gost.SSHForwardTransporter()
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}
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ln, err = gost.TCPRemoteForwardListener(node.Addr, chain)
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case "udp":
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ln, err = gost.UDPDirectForwardListener(node.Addr, time.Duration(node.GetInt("ttl"))*time.Second)
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case "rudp":
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ln, err = gost.UDPRemoteForwardListener(node.Addr, chain, time.Duration(node.GetInt("ttl"))*time.Second)
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case "ssu":
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ln, err = gost.ShadowUDPListener(node.Addr, node.User, time.Duration(node.GetInt("ttl"))*time.Second)
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case "obfs4":
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if err = gost.Obfs4Init(node, true); err != nil {
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return err
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}
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ln, err = gost.Obfs4Listener(node.Addr)
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case "ohttp":
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ln, err = gost.ObfsHTTPListener(node.Addr)
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default:
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ln, err = gost.TCPListener(node.Addr)
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}
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if err != nil {
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return err
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}
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var whitelist, blacklist *gost.Permissions
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if node.Values.Get("whitelist") != "" {
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if whitelist, err = gost.ParsePermissions(node.Get("whitelist")); err != nil {
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return err
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}
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}
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if node.Values.Get("blacklist") != "" {
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if blacklist, err = gost.ParsePermissions(node.Get("blacklist")); err != nil {
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return err
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}
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}
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var handlerOptions []gost.HandlerOption
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handlerOptions = append(handlerOptions,
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gost.AddrHandlerOption(node.Addr),
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gost.ChainHandlerOption(chain),
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gost.UsersHandlerOption(users...),
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gost.TLSConfigHandlerOption(tlsCfg),
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gost.WhitelistHandlerOption(whitelist),
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gost.BlacklistHandlerOption(blacklist),
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gost.BypassHandlerOption(parseBypass(node.Get("bypass"))),
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gost.StrategyHandlerOption(parseStrategy(node.Get("strategy"))),
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)
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var handler gost.Handler
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switch node.Protocol {
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case "http2":
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handler = gost.HTTP2Handler(handlerOptions...)
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case "socks", "socks5":
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handler = gost.SOCKS5Handler(handlerOptions...)
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case "socks4", "socks4a":
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handler = gost.SOCKS4Handler(handlerOptions...)
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case "ss":
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handler = gost.ShadowHandler(handlerOptions...)
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case "http":
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handler = gost.HTTPHandler(handlerOptions...)
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case "tcp":
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handler = gost.TCPDirectForwardHandler(node.Remote, handlerOptions...)
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case "rtcp":
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handler = gost.TCPRemoteForwardHandler(node.Remote, handlerOptions...)
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case "udp":
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handler = gost.UDPDirectForwardHandler(node.Remote, handlerOptions...)
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case "rudp":
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handler = gost.UDPRemoteForwardHandler(node.Remote, handlerOptions...)
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case "forward":
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handler = gost.SSHForwardHandler(handlerOptions...)
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case "redirect":
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handler = gost.TCPRedirectHandler(handlerOptions...)
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case "ssu":
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handler = gost.ShadowUDPdHandler(handlerOptions...)
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case "sni":
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handler = gost.SNIHandler(handlerOptions...)
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default:
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// start from 2.5, if remote is not empty, then we assume that it is a forward tunnel.
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if node.Remote != "" {
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handler = gost.TCPDirectForwardHandler(node.Remote, handlerOptions...)
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} else {
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handler = gost.AutoHandler(handlerOptions...)
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}
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}
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srv := &gost.Server{Listener: ln}
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chain.Resolver = parseResolver(node.Get("dns"))
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if gost.Debug {
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log.Logf("[resolver]\n%v", chain.Resolver)
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}
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if f, _ := os.Open(node.Get("hosts")); f != nil {
|
|
chain.Hosts, err = gost.ParseHosts(f)
|
|
if err != nil {
|
|
log.Logf("[hosts] %s: %v", f.Name(), err)
|
|
}
|
|
}
|
|
|
|
go srv.Serve(handler)
|
|
}
|
|
|
|
return nil
|
|
}
|