Update On Sat Aug 3 20:32:16 CEST 2024

xray-core/proxy/socks/protocol.go

@@ -69,20 +69,12 @@ func (s *ServerSession) handshake4(cmd byte, reader io.Reader, writer io.Writer)
 	if _, err := ReadUntilNull(reader); /* user id */ err != nil {
 		return nil, err
 	}
-	// Sock4a domain
 	if address.IP()[0] == 0x00 {
 		domain, err := ReadUntilNull(reader)
 		if err != nil {
 			return nil, errors.New("failed to read domain for socks 4a").Base(err)
 		}
-		address = net.DomainAddress(domain)
-		// Check if the client sends an IP address as domain
-		if len(domain) > 0 && (domain[0] >= '0' && domain[0] <= '9') {
-			addr := net.ParseAddress(domain)
-			if addr.Family().IsIP() {
-				address = addr
-			}
-		}
+		address = net.ParseAddress(domain)
 	}
 
 	switch cmd {