use ip address instead of domain address in Connector.Connect

chain.go

@@ -143,7 +143,7 @@ func (c *Chain) dialWithOptions(addr string, options *ChainOptions) (net.Conn, e
 		return nil, err
 	}
 
-	cc, err := route.LastNode().Client.Connect(conn, addr, IPAddrConnectOption(ipAddr))
+	cc, err := route.LastNode().Client.Connect(conn, ipAddr, AddrConnectOption(addr))
 	if err != nil {
 		conn.Close()
 		return nil, err

client.go

@@ -202,15 +202,15 @@ func QUICConfigHandshakeOption(config *QUICConfig) HandshakeOption {
 
 // ConnectOptions describes the options for Connector.Connect.
 type ConnectOptions struct {
-	IPAddr string
+	Addr string
 }
 
 // ConnectOption allows a common way to set ConnectOptions.
 type ConnectOption func(opts *ConnectOptions)
 
-// IPAddrConnectOption specifies the corresponding IP:PORT of the connected target address.
-func IPAddrConnectOption(ipAddr string) ConnectOption {
+// AddrConnectOption specifies the corresponding address of the target.
+func AddrConnectOption(addr string) ConnectOption {
 	return func(opts *ConnectOptions) {
-		opts.IPAddr = ipAddr
+		opts.Addr = addr
 	}
 }

http2.go

@@ -29,11 +29,6 @@ func HTTP2Connector(user *url.Userinfo) Connector {
 }
 
 func (c *http2Connector) Connect(conn net.Conn, addr string, options ...ConnectOption) (net.Conn, error) {
-	var cOpts ConnectOptions
-	for _, opt := range options {
-		opt(&cOpts)
-	}
-
 	cc, ok := conn.(*http2ClientConn)
 	if !ok {
 		return nil, errors.New("wrong connection type")
@@ -81,9 +76,6 @@ func (c *http2Connector) Connect(conn net.Conn, addr string, options ...ConnectO
 		closed: make(chan struct{}),
 	}
 
-	if cOpts.IPAddr != "" {
-		addr = cOpts.IPAddr
-	}
 	hc.remoteAddr, _ = net.ResolveTCPAddr("tcp", addr)
 	hc.localAddr, _ = net.ResolveTCPAddr("tcp", cc.addr)
 

socks.go

@@ -262,14 +262,6 @@ func SOCKS4Connector() Connector {
 }
 
 func (c *socks4Connector) Connect(conn net.Conn, addr string, options ...ConnectOption) (net.Conn, error) {
-	var cOpts ConnectOptions
-	for _, opt := range options {
-		opt(&cOpts)
-	}
-	if cOpts.IPAddr != "" {
-		addr = cOpts.IPAddr
-	}
-
 	taddr, err := net.ResolveTCPAddr("tcp4", addr)
 	if err != nil {
 		return nil, err