Chore: make the code more semantic

adapters/outbound/vmess.go

@@ -0,0 +1,95 @@
+package adapters
+
+import (
+	"fmt"
+	"net"
+	"strconv"
+	"strings"
+
+	"github.com/Dreamacro/clash/component/vmess"
+	C "github.com/Dreamacro/clash/constant"
+)
+
+// VmessAdapter is a vmess adapter
+type VmessAdapter struct {
+	conn net.Conn
+}
+
+// Close is used to close connection
+func (v *VmessAdapter) Close() {
+	v.conn.Close()
+}
+
+func (v *VmessAdapter) Conn() net.Conn {
+	return v.conn
+}
+
+type Vmess struct {
+	name   string
+	server string
+	client *vmess.Client
+}
+
+func (ss *Vmess) Name() string {
+	return ss.name
+}
+
+func (ss *Vmess) Type() C.AdapterType {
+	return C.Vmess
+}
+
+func (ss *Vmess) Generator(metadata *C.Metadata) (adapter C.ProxyAdapter, err error) {
+	c, err := net.Dial("tcp", ss.server)
+	if err != nil {
+		return nil, fmt.Errorf("%s connect error", ss.server)
+	}
+	tcpKeepAlive(c)
+	c = ss.client.New(c, parseVmessAddr(metadata))
+	return &VmessAdapter{conn: c}, err
+}
+
+func NewVmess(name string, server string, uuid string, alterID uint16, security string, option map[string]string) (*Vmess, error) {
+	security = strings.ToLower(security)
+	client, err := vmess.NewClient(vmess.Config{
+		UUID:     uuid,
+		AlterID:  alterID,
+		Security: security,
+		TLS:      option["tls"] == "true",
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return &Vmess{
+		name:   name,
+		server: server,
+		client: client,
+	}, nil
+}
+
+func parseVmessAddr(metadata *C.Metadata) *vmess.DstAddr {
+	var addrType byte
+	var addr []byte
+	switch metadata.AddrType {
+	case C.AtypIPv4:
+		addrType = byte(vmess.AtypIPv4)
+		addr = make([]byte, net.IPv4len)
+		copy(addr[:], metadata.IP.To4())
+	case C.AtypIPv6:
+		addrType = byte(vmess.AtypIPv6)
+		addr = make([]byte, net.IPv6len)
+		copy(addr[:], metadata.IP.To16())
+	case C.AtypDomainName:
+		addrType = byte(vmess.AtypDomainName)
+		addr = make([]byte, len(metadata.Host)+1)
+		addr[0] = byte(len(metadata.Host))
+		copy(addr[1:], []byte(metadata.Host))
+	}
+
+	port, _ := strconv.Atoi(metadata.Port)
+	return &vmess.DstAddr{
+		AddrType: addrType,
+		Addr:     addr,
+		Port:     uint(port),
+	}
+}