Add shadowtls (#49)

* Add shadowtls outbound

* Add shadowtls inbound

* Add shadowtls example

* Add shadowtls documentation

option/inbound.go

@@ -21,6 +21,7 @@ type _Inbound struct {
 	TrojanOptions      TrojanInboundOptions      `json:"-"`
 	NaiveOptions       NaiveInboundOptions       `json:"-"`
 	HysteriaOptions    HysteriaInboundOptions    `json:"-"`
+	ShadowTLSOptions   ShadowTLSInboundOptions   `json:"-"`
 }
 
 type Inbound _Inbound
@@ -52,6 +53,8 @@ func (h Inbound) MarshalJSON() ([]byte, error) {
 		v = h.NaiveOptions
 	case C.TypeHysteria:
 		v = h.HysteriaOptions
+	case C.TypeShadowTLS:
+		v = h.ShadowTLSOptions
 	default:
 		return nil, E.New("unknown inbound type: ", h.Type)
 	}
@@ -89,6 +92,8 @@ func (h *Inbound) UnmarshalJSON(bytes []byte) error {
 		v = &h.NaiveOptions
 	case C.TypeHysteria:
 		v = &h.HysteriaOptions
+	case C.TypeShadowTLS:
+		v = &h.ShadowTLSOptions
 	default:
 		return E.New("unknown inbound type: ", h.Type)
 	}

option/outbound.go

@@ -20,6 +20,7 @@ type _Outbound struct {
 	HysteriaOptions    HysteriaOutboundOptions    `json:"-"`
 	TorOptions         TorOutboundOptions         `json:"-"`
 	SSHOptions         SSHOutboundOptions         `json:"-"`
+	ShadowTLSOptions   ShadowTLSOutboundOptions   `json:"-"`
 	SelectorOptions    SelectorOutboundOptions    `json:"-"`
 }
 
@@ -50,6 +51,8 @@ func (h Outbound) MarshalJSON() ([]byte, error) {
 		v = h.TorOptions
 	case C.TypeSSH:
 		v = h.SSHOptions
+	case C.TypeShadowTLS:
+		v = h.ShadowTLSOptions
 	case C.TypeSelector:
 		v = h.SelectorOptions
 	default:
@@ -87,6 +90,8 @@ func (h *Outbound) UnmarshalJSON(bytes []byte) error {
 		v = &h.TorOptions
 	case C.TypeSSH:
 		v = &h.SSHOptions
+	case C.TypeShadowTLS:
+		v = &h.ShadowTLSOptions
 	case C.TypeSelector:
 		v = &h.SelectorOptions
 	default:

option/shadowtls.go

@@ -0,0 +1,17 @@
+package option
+
+type ShadowTLSInboundOptions struct {
+	ListenOptions
+	Handshake ShadowTLSHandshakeOptions `json:"handshake"`
+}
+
+type ShadowTLSHandshakeOptions struct {
+	ServerOptions
+	DialerOptions
+}
+
+type ShadowTLSOutboundOptions struct {
+	OutboundDialerOptions
+	ServerOptions
+	TLS *OutboundTLSOptions `json:"tls,omitempty"`
+}