mirror of
https://github.com/wyx2685/V2bX.git
synced 2025-01-23 10:28:13 -05:00
308 lines
8.3 KiB
Go
308 lines
8.3 KiB
Go
package hy
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import (
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"errors"
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"fmt"
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"github.com/yosuke-furukawa/json5/encoding/json5"
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"regexp"
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"strconv"
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)
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const (
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mbpsToBps = 125000
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minSpeedBPS = 16384
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DefaultALPN = "hysteria"
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DefaultStreamReceiveWindow = 16777216 // 16 MB
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DefaultConnectionReceiveWindow = DefaultStreamReceiveWindow * 5 / 2 // 40 MB
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DefaultMaxIncomingStreams = 1024
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DefaultMMDBFilename = "GeoLite2-Country.mmdb"
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ServerMaxIdleTimeoutSec = 60
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DefaultClientIdleTimeoutSec = 20
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DefaultClientHopIntervalSec = 10
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)
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var rateStringRegexp = regexp.MustCompile(`^(\d+)\s*([KMGT]?)([Bb])ps$`)
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type serverConfig struct {
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Listen string `json:"listen"`
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Protocol string `json:"protocol"`
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ACME struct {
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Domains []string `json:"domains"`
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Email string `json:"email"`
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DisableHTTPChallenge bool `json:"disable_http"`
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DisableTLSALPNChallenge bool `json:"disable_tlsalpn"`
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AltHTTPPort int `json:"alt_http_port"`
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AltTLSALPNPort int `json:"alt_tlsalpn_port"`
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} `json:"acme"`
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CertFile string `json:"cert"`
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KeyFile string `json:"key"`
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// Optional below
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Up string `json:"up"`
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UpMbps int `json:"up_mbps"`
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Down string `json:"down"`
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DownMbps int `json:"down_mbps"`
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DisableUDP bool `json:"disable_udp"`
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ACL string `json:"acl"`
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MMDB string `json:"mmdb"`
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Obfs string `json:"obfs"`
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Auth struct {
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Mode string `json:"mode"`
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Config json5.RawMessage `json:"config"`
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} `json:"auth"`
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ALPN string `json:"alpn"`
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PrometheusListen string `json:"prometheus_listen"`
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ReceiveWindowConn uint64 `json:"recv_window_conn"`
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ReceiveWindowClient uint64 `json:"recv_window_client"`
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MaxConnClient int `json:"max_conn_client"`
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DisableMTUDiscovery bool `json:"disable_mtu_discovery"`
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Resolver string `json:"resolver"`
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ResolvePreference string `json:"resolve_preference"`
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SOCKS5Outbound struct {
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Server string `json:"server"`
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User string `json:"user"`
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Password string `json:"password"`
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} `json:"socks5_outbound"`
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BindOutbound struct {
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Address string `json:"address"`
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Device string `json:"device"`
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} `json:"bind_outbound"`
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}
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func (c *serverConfig) Speed() (uint64, uint64, error) {
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var up, down uint64
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if len(c.Up) > 0 {
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up = stringToBps(c.Up)
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if up == 0 {
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return 0, 0, errors.New("invalid speed format")
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}
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} else {
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up = uint64(c.UpMbps) * mbpsToBps
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}
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if len(c.Down) > 0 {
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down = stringToBps(c.Down)
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if down == 0 {
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return 0, 0, errors.New("invalid speed format")
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}
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} else {
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down = uint64(c.DownMbps) * mbpsToBps
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}
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return up, down, nil
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}
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func (c *serverConfig) Check() error {
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if len(c.Listen) == 0 {
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return errors.New("missing listen address")
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}
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if len(c.ACME.Domains) == 0 && (len(c.CertFile) == 0 || len(c.KeyFile) == 0) {
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return errors.New("need either ACME info or cert/key files")
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}
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if len(c.ACME.Domains) > 0 && (len(c.CertFile) > 0 || len(c.KeyFile) > 0) {
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return errors.New("cannot use both ACME and cert/key files, they are mutually exclusive")
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}
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if up, down, err := c.Speed(); err != nil || (up != 0 && up < minSpeedBPS) || (down != 0 && down < minSpeedBPS) {
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return errors.New("invalid speed")
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}
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if (c.ReceiveWindowConn != 0 && c.ReceiveWindowConn < 65536) ||
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(c.ReceiveWindowClient != 0 && c.ReceiveWindowClient < 65536) {
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return errors.New("invalid receive window size")
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}
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if c.MaxConnClient < 0 {
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return errors.New("invalid max connections per client")
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}
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return nil
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}
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func (c *serverConfig) Fill() {
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if len(c.ALPN) == 0 {
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c.ALPN = DefaultALPN
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}
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if c.ReceiveWindowConn == 0 {
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c.ReceiveWindowConn = DefaultStreamReceiveWindow
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}
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if c.ReceiveWindowClient == 0 {
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c.ReceiveWindowClient = DefaultConnectionReceiveWindow
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}
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if c.MaxConnClient == 0 {
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c.MaxConnClient = DefaultMaxIncomingStreams
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}
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if len(c.MMDB) == 0 {
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c.MMDB = DefaultMMDBFilename
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}
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}
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func (c *serverConfig) String() string {
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return fmt.Sprintf("%+v", *c)
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}
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type Relay struct {
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Listen string `json:"listen"`
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Remote string `json:"remote"`
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Timeout int `json:"timeout"`
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}
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func (r *Relay) Check() error {
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if len(r.Listen) == 0 {
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return errors.New("missing relay listen address")
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}
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if len(r.Remote) == 0 {
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return errors.New("missing relay remote address")
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}
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if r.Timeout != 0 && r.Timeout < 4 {
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return errors.New("invalid relay timeout")
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}
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return nil
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}
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type clientConfig struct {
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Server string `json:"server"`
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Protocol string `json:"protocol"`
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Up string `json:"up"`
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UpMbps int `json:"up_mbps"`
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Down string `json:"down"`
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DownMbps int `json:"down_mbps"`
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// Optional below
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Retry int `json:"retry"`
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RetryInterval *int `json:"retry_interval"`
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QuitOnDisconnect bool `json:"quit_on_disconnect"`
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HandshakeTimeout int `json:"handshake_timeout"`
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IdleTimeout int `json:"idle_timeout"`
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HopInterval int `json:"hop_interval"`
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SOCKS5 struct {
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Listen string `json:"listen"`
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Timeout int `json:"timeout"`
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DisableUDP bool `json:"disable_udp"`
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User string `json:"user"`
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Password string `json:"password"`
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} `json:"socks5"`
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HTTP struct {
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Listen string `json:"listen"`
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Timeout int `json:"timeout"`
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User string `json:"user"`
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Password string `json:"password"`
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Cert string `json:"cert"`
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Key string `json:"key"`
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} `json:"http"`
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TUN struct {
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Name string `json:"name"`
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Timeout int `json:"timeout"`
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MTU uint32 `json:"mtu"`
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TCPSendBufferSize string `json:"tcp_sndbuf"`
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TCPReceiveBufferSize string `json:"tcp_rcvbuf"`
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TCPModerateReceiveBuffer bool `json:"tcp_autotuning"`
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} `json:"tun"`
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TCPRelays []Relay `json:"relay_tcps"`
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TCPRelay Relay `json:"relay_tcp"` // deprecated, but we still support it for backward compatibility
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UDPRelays []Relay `json:"relay_udps"`
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UDPRelay Relay `json:"relay_udp"` // deprecated, but we still support it for backward compatibility
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TCPTProxy struct {
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Listen string `json:"listen"`
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Timeout int `json:"timeout"`
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} `json:"tproxy_tcp"`
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UDPTProxy struct {
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Listen string `json:"listen"`
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Timeout int `json:"timeout"`
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} `json:"tproxy_udp"`
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TCPRedirect struct {
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Listen string `json:"listen"`
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Timeout int `json:"timeout"`
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} `json:"redirect_tcp"`
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ACL string `json:"acl"`
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MMDB string `json:"mmdb"`
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Obfs string `json:"obfs"`
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Auth []byte `json:"auth"`
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AuthString string `json:"auth_str"`
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ALPN string `json:"alpn"`
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ServerName string `json:"server_name"`
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Insecure bool `json:"insecure"`
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CustomCA string `json:"ca"`
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ReceiveWindowConn uint64 `json:"recv_window_conn"`
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ReceiveWindow uint64 `json:"recv_window"`
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DisableMTUDiscovery bool `json:"disable_mtu_discovery"`
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FastOpen bool `json:"fast_open"`
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LazyStart bool `json:"lazy_start"`
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Resolver string `json:"resolver"`
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ResolvePreference string `json:"resolve_preference"`
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}
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func (c *clientConfig) Speed() (uint64, uint64, error) {
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var up, down uint64
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if len(c.Up) > 0 {
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up = stringToBps(c.Up)
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if up == 0 {
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return 0, 0, errors.New("invalid speed format")
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}
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} else {
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up = uint64(c.UpMbps) * mbpsToBps
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}
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if len(c.Down) > 0 {
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down = stringToBps(c.Down)
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if down == 0 {
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return 0, 0, errors.New("invalid speed format")
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}
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} else {
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down = uint64(c.DownMbps) * mbpsToBps
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}
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return up, down, nil
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}
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func (c *clientConfig) Fill() {
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if len(c.ALPN) == 0 {
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c.ALPN = DefaultALPN
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}
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if c.ReceiveWindowConn == 0 {
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c.ReceiveWindowConn = DefaultStreamReceiveWindow
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}
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if c.ReceiveWindow == 0 {
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c.ReceiveWindow = DefaultConnectionReceiveWindow
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}
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if len(c.MMDB) == 0 {
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c.MMDB = DefaultMMDBFilename
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}
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if c.IdleTimeout == 0 {
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c.IdleTimeout = DefaultClientIdleTimeoutSec
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}
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if c.HopInterval == 0 {
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c.HopInterval = DefaultClientHopIntervalSec
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}
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}
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func (c *clientConfig) String() string {
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return fmt.Sprintf("%+v", *c)
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}
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func stringToBps(s string) uint64 {
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if s == "" {
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return 0
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}
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m := rateStringRegexp.FindStringSubmatch(s)
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if m == nil {
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return 0
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}
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var n uint64
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switch m[2] {
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case "K":
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n = 1 << 10
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case "M":
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n = 1 << 20
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case "G":
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n = 1 << 30
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case "T":
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n = 1 << 40
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default:
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n = 1
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}
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v, _ := strconv.ParseUint(m[1], 10, 64)
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n = v * n
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if m[3] == "b" {
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// Bits, need to convert to bytes
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n = n >> 3
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}
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return n
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}
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